Position and Presence Sensing

Position and Presence Sensing within Sensors, Controls & Machine Vision.

Category CAT-000000245

Subcategories

Publications

• OT-2026-000028526
  Three pad foam vacuum gripper, three outlet manifold, three stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,220 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, three foam pads, one ejector, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the ejector. Before the workpiece reaches the set-down position, the

• OT-2026-000028527
  Foam pad vacuum gripper, three zone face, per zone isolation, three stage ejector, pulsed blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,308 words

  A zoned vacuum gripping tool comprising one tool-change interface, one foam pad, one ejector, three isolation valves, three zone branches, one contact detector and one blow-off valve. When the foam pad reaches the workpiece, the foam pad is evacuated by the ejector. Before the workpiece reaches the set-down position, t

• OT-2026-000028528
  Single bellows cup vacuum gripper, common isolation valve, single stage ejector, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,084 words

  A bellows-cup vacuum gripping tool comprising one tool-change interface, one bellows cup, one ejector, one isolation valve, one contact detector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpi

• OT-2026-000028529
  Six cup vacuum gripper, six outlet manifold, three stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,162 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, six suction cups, one ejector, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches the set-down posi

• OT-2026-000028530
  Three pad foam vacuum gripper, three outlet manifold, three stage ejector, manifold pressure sensor, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,134 words

  A foam-pad vacuum gripping tool comprising one mounting flange, three foam pads, one ejector, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the ejector. Before the workpiece reaches the set-down position, the workpi

• OT-2026-000028531
  Foam pad vacuum gripper, three zone face, per zone isolation, three stage ejector, pulsed blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,222 words

  A zoned vacuum gripping tool comprising one mounting flange, one foam pad, one ejector, three isolation valves, three zone branches, one contact detector and one blow-off valve. When the foam pad reaches the workpiece, the foam pad is evacuated by the ejector. Before the workpiece reaches the set-down position, the wor

• OT-2026-000028532
  Single bellows cup vacuum gripper, common isolation valve, two stage ejector, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,118 words

  A bellows-cup vacuum gripping tool comprising one tool-change interface, one bellows cup, one ejector, one isolation valve, one contact detector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpi

• OT-2026-000028533
  Six cup vacuum gripper, six outlet manifold, three stage ejector, manifold pressure sensor, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,091 words

  A suction-cup vacuum gripping tool comprising one mounting flange, six suction cups, one ejector, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches the set-down position,

• OT-2026-000028534
  Three pad foam vacuum gripper, three outlet manifold, three stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,240 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, three foam pads, one ejector, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the ejector. Before the workpiece reaches the set-down position, the

• OT-2026-000028535
  Foam pad vacuum gripper, three zone face, per zone isolation, three stage ejector, pulsed blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,327 words

  A zoned vacuum gripping tool comprising one tool-change interface, one foam pad, one ejector, three isolation valves, three zone branches, one contact detector and one blow-off valve. When the foam pad reaches the workpiece, the foam pad is evacuated by the ejector. Before the workpiece reaches the set-down position, t

• OT-2026-000028536
  Single bellows cup vacuum gripper, common isolation valve, two stage ejector, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,013 words

  A bellows-cup vacuum gripping tool comprising one mounting flange, one bellows cup, one ejector, one isolation valve, one contact detector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is

• OT-2026-000028537
  Six cup vacuum gripper, six outlet manifold, three stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,197 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, six suction cups, one ejector, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches the set-down posi

• OT-2026-000028538
  Three pad foam vacuum gripper, three outlet manifold, three stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,205 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, three foam pads, one ejector, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the ejector. Before the workpiece reaches the set-down position, the

• OT-2026-000028539
  Foam pad vacuum gripper, three zone face, per zone isolation, three stage ejector, pulsed blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,293 words

  A zoned vacuum gripping tool comprising one tool-change interface, one foam pad, one ejector, three isolation valves, three zone branches, one contact detector and one blow-off valve. When the foam pad reaches the workpiece, the foam pad is evacuated by the ejector. Before the workpiece reaches the set-down position, t

• OT-2026-000028540
  Single bellows cup vacuum gripper, common isolation valve, two stage ejector, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,118 words

  A bellows-cup vacuum gripping tool comprising one tool-change interface, one bellows cup, one ejector, one isolation valve, one contact detector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpi

• OT-2026-000028541
  Six cup vacuum gripper, six outlet manifold, three stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,162 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, six suction cups, one ejector, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches the set-down posi

• OT-2026-000028542
  Three pad foam vacuum gripper, three outlet manifold, plant vacuum fed, manifold pressure sensor, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,132 words

  A foam-pad vacuum gripping tool comprising one mounting flange, three foam pads, one plant vacuum connection, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the plant vacuum connection. Before the workpiece reaches t

• OT-2026-000028543
  Three cup vacuum gripper, three zone face, per zone isolation, three stage ejector, pulsed blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,185 words

  A zoned vacuum gripping tool comprising one mounting flange, three suction cups, one ejector, three isolation valves, three zone branches, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches the set-down posi

• OT-2026-000028544
  Single bellows cup vacuum gripper, common isolation valve, two stage ejector, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,084 words

  A bellows-cup vacuum gripping tool comprising one tool-change interface, one bellows cup, one ejector, one isolation valve, one contact detector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpi

• OT-2026-000028545
  Six cup vacuum gripper, six outlet manifold, plant vacuum fed, manifold pressure sensor, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,074 words

  A suction-cup vacuum gripping tool comprising one mounting flange, six suction cups, one plant vacuum connection, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the plant vacuum connection. Before the workpiece

• OT-2026-000028546
  Three pad foam vacuum gripper, three outlet manifold, plant vacuum fed, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,238 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, three foam pads, one plant vacuum connection, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the plant vacuum connection. Before the workpiece rea

• OT-2026-000028547
  Three cup vacuum gripper, three zone face, per zone isolation, three stage ejector, pulsed blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,290 words

  A zoned vacuum gripping tool comprising one tool-change interface, three suction cups, one ejector, three isolation valves, three zone branches, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches the set-dow

• OT-2026-000028548
  Single bellows cup vacuum gripper, common isolation valve, two stage ejector, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,013 words

  A bellows-cup vacuum gripping tool comprising one mounting flange, one bellows cup, one ejector, one isolation valve, one contact detector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is

• OT-2026-000028549
  Six cup vacuum gripper, six outlet manifold, plant vacuum fed, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,180 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, six suction cups, one plant vacuum connection, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the plant vacuum connection. Before the wor

• OT-2026-000028550
  Three pad foam vacuum gripper, three outlet manifold, plant vacuum fed, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,203 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, three foam pads, one plant vacuum connection, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the plant vacuum connection. Before the workpiece rea

• OT-2026-000028551
  Three cup vacuum gripper, three zone face, per zone isolation, three stage ejector, pulsed blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,256 words

  A zoned vacuum gripping tool comprising one tool-change interface, three suction cups, one ejector, three isolation valves, three zone branches, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches the set-dow

• OT-2026-000028552
  Single bellows cup vacuum gripper, common isolation valve, two stage ejector, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,118 words

  A bellows-cup vacuum gripping tool comprising one tool-change interface, one bellows cup, one ejector, one isolation valve, one contact detector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpi

• OT-2026-000028553
  Six cup vacuum gripper, six outlet manifold, plant vacuum fed, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,145 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, six suction cups, one plant vacuum connection, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the plant vacuum connection. Before the wor

• OT-2026-000028554
  Three pad foam vacuum gripper, three outlet manifold, plant vacuum fed, manifold pressure sensor, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,117 words

  A foam-pad vacuum gripping tool comprising one mounting flange, three foam pads, one plant vacuum connection, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the plant vacuum connection. Before the workpiece reaches t

• OT-2026-000028555
  Three cup vacuum gripper, three zone face, per zone isolation, three stage ejector, pulsed blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,185 words

  A zoned vacuum gripping tool comprising one mounting flange, three suction cups, one ejector, three isolation valves, three zone branches, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches the set-down posi

• OT-2026-000028556
  Single bellows cup vacuum gripper, common isolation valve, two stage ejector, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,084 words

  A bellows-cup vacuum gripping tool comprising one tool-change interface, one bellows cup, one ejector, one isolation valve, one contact detector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpi

• OT-2026-000028557
  Six cup vacuum gripper, six outlet manifold, plant vacuum fed, manifold pressure sensor, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,074 words

  A suction-cup vacuum gripping tool comprising one mounting flange, six suction cups, one plant vacuum connection, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the plant vacuum connection. Before the workpiece

• OT-2026-000028558
  Three pad foam vacuum gripper, three outlet manifold, plant vacuum fed, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,223 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, three foam pads, one plant vacuum connection, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the plant vacuum connection. Before the workpiece rea

• OT-2026-000028559
  Three cup vacuum gripper, three zone face, per zone isolation, three stage ejector, pulsed blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,290 words

  A zoned vacuum gripping tool comprising one tool-change interface, three suction cups, one ejector, three isolation valves, three zone branches, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches the set-dow

• OT-2026-000028560
  Single bellows cup vacuum gripper, common isolation valve, three stage ejector, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,013 words

  A bellows-cup vacuum gripping tool comprising one mounting flange, one bellows cup, one ejector, one isolation valve, one contact detector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is

• OT-2026-000028561
  Six cup vacuum gripper, six outlet manifold, plant vacuum fed, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,180 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, six suction cups, one plant vacuum connection, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the plant vacuum connection. Before the wor

• OT-2026-000028562
  Three pad foam vacuum gripper, three outlet manifold, plant vacuum fed, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,188 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, three foam pads, one plant vacuum connection, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the plant vacuum connection. Before the workpiece rea

• OT-2026-000028563
  Three cup vacuum gripper, three zone face, per zone isolation, three stage ejector, pulsed blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,256 words

  A zoned vacuum gripping tool comprising one tool-change interface, three suction cups, one ejector, three isolation valves, three zone branches, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches the set-dow

• OT-2026-000028564
  Single bellows cup vacuum gripper, common isolation valve, plant vacuum fed, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,033 words

  A bellows-cup vacuum gripping tool comprising one tool-change interface, one bellows cup, one plant vacuum connection, one isolation valve, one contact detector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the plant vacuum connection. Before the workpiece reaches t

• OT-2026-000028565
  Two cup vacuum gripper, two outlet manifold, common isolation valve, two stage ejector, manifold pressure sensor, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,240 words

  A suction-cup vacuum gripping tool comprising one mounting flange, two suction cups, one ejector, one isolation valve, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches th

• OT-2026-000028566
  Four pad foam vacuum gripper, four outlet manifold, two stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,205 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, four foam pads, one ejector, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the ejector. Before the workpiece reaches the set-down position, the w

• OT-2026-000028567
  Three cup vacuum gripper, three zone face, per zone isolation, plant vacuum fed, pulsed blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,275 words

  A zoned vacuum gripping tool comprising one tool-change interface, three suction cups, one plant vacuum connection, three isolation valves, three zone branches, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the plant vacuum connection. Before t

• OT-2026-000028568
  Single bellows cup vacuum gripper, common isolation valve, pump fed, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 995 words

  A bellows-cup vacuum gripping tool comprising one mounting flange, one bellows cup, one vacuum pump, one isolation valve, one contact detector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the vacuum pump. Before the workpiece reaches the set-down position, the work

• OT-2026-000028569
  Two cup vacuum gripper, two outlet manifold, common isolation valve, two stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,345 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, two suction cups, one ejector, one isolation valve, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reac

• OT-2026-000028570
  Four pad foam vacuum gripper, four outlet manifold, three stage ejector, manifold pressure sensor, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,149 words

  A foam-pad vacuum gripping tool comprising one mounting flange, four foam pads, one ejector, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the ejector. Before the workpiece reaches the set-down position, the workpie

• OT-2026-000028571
  Three cup vacuum gripper, three zone face, per zone isolation, plant vacuum fed, pulsed blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,241 words

  A zoned vacuum gripping tool comprising one tool-change interface, three suction cups, one plant vacuum connection, three isolation valves, three zone branches, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the plant vacuum connection. Before t

• OT-2026-000028572
  Single bellows cup vacuum gripper, common isolation valve, pump fed, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,100 words

  A bellows-cup vacuum gripping tool comprising one tool-change interface, one bellows cup, one vacuum pump, one isolation valve, one contact detector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the vacuum pump. Before the workpiece reaches the set-down position, th

• OT-2026-000028573
  Two cup vacuum gripper, two outlet manifold, common isolation valve, two stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,311 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, two suction cups, one ejector, one isolation valve, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reac

• OT-2026-000028574
  Four pad foam vacuum gripper, four outlet manifold, three stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,255 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, four foam pads, one ejector, one manifold, one pressure sensor, one contact detector and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the ejector. Before the workpiece reaches the set-down position, the w

• OT-2026-000028575
  Three cup vacuum gripper, three zone face, per zone isolation, plant vacuum fed, pulsed blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,170 words

  A zoned vacuum gripping tool comprising one mounting flange, three suction cups, one plant vacuum connection, three isolation valves, three zone branches, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the plant vacuum connection. Before the wor