Position and Presence Sensing

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

Category CAT-000000245

Subcategories

Publications

• OT-2026-000028426
  Three pad foam vacuum gripper, three outlet manifold, single 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-2026-000028427
  Three bellows 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 · 1,268 words

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

• OT-2026-000028428
  Single bellows cup vacuum gripper, pump fed, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 919 words

  A bellows-cup vacuum gripping tool comprising one tool-change interface, one bellows cup, one vacuum pump, 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 workpiece is blown

• OT-2026-000028429
  Six cup vacuum gripper, six outlet manifold, single 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-2026-000028430
  Three pad foam vacuum gripper, three outlet manifold, two 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, 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-2026-000028431
  Three bellows cup vacuum gripper, three zone face, per zone isolation, three stage ejector, pulsed blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,197 words

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

• OT-2026-000028432
  Single bellows cup vacuum gripper, common isolation valve, single 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-2026-000028433
  Six cup vacuum gripper, six outlet manifold, two 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-2026-000028434
  Three pad foam vacuum gripper, three outlet manifold, two 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, 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-2026-000028435
  Three bellows 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 · 1,302 words

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

• OT-2026-000028436
  Single bellows cup vacuum gripper, common isolation valve, three 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-2026-000028437
  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-2026-000028438
  Three pad foam vacuum gripper, three outlet manifold, pump fed, manifold pressure sensor, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,131 words

  A foam-pad vacuum gripping tool comprising one mounting flange, three foam pads, one vacuum pump, 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 vacuum pump. Before the workpiece reaches the set-down position, th

• OT-2026-000028439
  Three bellows cup vacuum gripper, three zone face, per zone isolation, plant vacuum fed, pulsed blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,182 words

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

• OT-2026-000028440
  Single bellows cup vacuum gripper, common isolation valve, three 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-2026-000028441
  Six cup vacuum gripper, six outlet manifold, pump fed, manifold pressure sensor, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,073 words

  A suction-cup vacuum gripping tool comprising one mounting flange, six suction cups, one vacuum pump, 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 vacuum pump. Before the workpiece reaches the set-down po

• OT-2026-000028442
  Three pad foam vacuum gripper, three outlet manifold, pump fed, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,237 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, three foam pads, one vacuum pump, 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 vacuum pump. Before the workpiece reaches the set-down positi

• OT-2026-000028443
  Three bellows 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 · 1,287 words

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

• OT-2026-000028444
  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-2026-000028445
  Six cup vacuum gripper, six outlet manifold, pump fed, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,179 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, six suction cups, one vacuum pump, 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 vacuum pump. Before the workpiece reaches the set-d

• OT-2026-000028446
  Three pad foam vacuum gripper, three outlet manifold, pump fed, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,202 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, three foam pads, one vacuum pump, 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 vacuum pump. Before the workpiece reaches the set-down positi

• OT-2026-000028447
  Three bellows 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 · 1,253 words

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

• OT-2026-000028448
  Single bellows cup vacuum gripper, common isolation valve, three 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-2026-000028449
  Six cup vacuum gripper, six outlet manifold, pump fed, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,144 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, six suction cups, one vacuum pump, 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 vacuum pump. Before the workpiece reaches the set-d

• OT-2026-000028450
  Three pad foam vacuum gripper, three outlet manifold, pump fed, manifold pressure sensor, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,116 words

  A foam-pad vacuum gripping tool comprising one mounting flange, three foam pads, one vacuum pump, 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 vacuum pump. Before the workpiece reaches the set-down position, th

• OT-2026-000028451
  Three bellows cup vacuum gripper, three zone face, per zone isolation, plant vacuum fed, pulsed blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,182 words

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

• OT-2026-000028452
  Single bellows cup vacuum gripper, common isolation valve, three 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-2026-000028453
  Six cup vacuum gripper, six outlet manifold, pump fed, manifold pressure sensor, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,073 words

  A suction-cup vacuum gripping tool comprising one mounting flange, six suction cups, one vacuum pump, 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 vacuum pump. Before the workpiece reaches the set-down po

• OT-2026-000028454
  Three pad foam vacuum gripper, three outlet manifold, pump fed, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,222 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, three foam pads, one vacuum pump, 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 vacuum pump. Before the workpiece reaches the set-down positi

• OT-2026-000028455
  Three bellows 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 · 1,287 words

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

• OT-2026-000028456
  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-2026-000028457
  Six cup vacuum gripper, six outlet manifold, pump fed, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,179 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, six suction cups, one vacuum pump, 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 vacuum pump. Before the workpiece reaches the set-d

• OT-2026-000028458
  Three pad foam vacuum gripper, three outlet manifold, pump fed, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,187 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, three foam pads, one vacuum pump, 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 vacuum pump. Before the workpiece reaches the set-down positi

• OT-2026-000028459
  Three bellows 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 · 1,253 words

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

• OT-2026-000028460
  Single bellows cup vacuum gripper, common isolation valve, three 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-2026-000028461
  Six cup vacuum gripper, six outlet manifold, pump fed, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,144 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, six suction cups, one vacuum pump, 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 vacuum pump. Before the workpiece reaches the set-d

• OT-2026-000028462
  Four pad foam vacuum gripper, four outlet manifold, single 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-2026-000028463
  Three bellows cup vacuum gripper, three zone face, per zone isolation, plant vacuum fed, pulsed blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,182 words

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

• OT-2026-000028464
  Single bellows cup vacuum gripper, common isolation valve, three 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-2026-000028465
  Two cup vacuum gripper, two outlet manifold, common isolation valve, single 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-2026-000028466
  Four pad foam vacuum gripper, four outlet manifold, single 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-2026-000028467
  Three bellows 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 · 1,287 words

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

• OT-2026-000028468
  Single bellows cup vacuum gripper, common isolation valve, plant vacuum fed, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 962 words

  A bellows-cup vacuum gripping tool comprising one mounting flange, 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 the set

• OT-2026-000028469
  Two cup vacuum gripper, two outlet manifold, common isolation valve, single 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-2026-000028470
  Four pad foam vacuum gripper, four outlet manifold, single 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, 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-2026-000028471
  Three bellows 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 · 1,253 words

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

• OT-2026-000028472
  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 · 1,067 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-2026-000028473
  Two cup vacuum gripper, two outlet manifold, common isolation valve, single 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-2026-000028474
  Four pad foam vacuum gripper, four outlet manifold, single 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, 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-2026-000028475
  Foam pad vacuum gripper, three zone face, per zone isolation, plant vacuum fed, 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 plant vacuum connection, 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 plant vacuum connection. Before the workpiece reache