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This is a record of a document published elsewhere, first published by the United States Patent and Trademark Office, as US-5076371-A, on 31 December 1991. OpenTechnical did not first disclose it. The identifier, hashes and timestamps below record what this library served and when, not when the material became public. View the original.

OT-2026-000003408

Tool for use in a hand power device

Published
Permanent URL
Classification
Tools & Tooling › Powered Hand Tools
Assignee
BOSCH GMBH ROBERT
Original source
US-5076371-A, the United States Patent and Trademark Office, 31 December 1991
Document SHA-256
728e5d1a93d590ac77b182ac4a1661b04800db5da3b575f34fe6a9ce5561752e

A tool for use in a hand power tool has a tool shank to be received in the hand power tool and two diametrically opposite recesses formed in the tool shank for receiving locking bodies of the power tool, and at least three rotary driving grooves open at a rear end surface of the tool shank and located on both sides of said longitudinal plane passing through the two recesses, and symmetrically relative to a plane of symmetry that extends transverse to the longitudinal plane for receiving strip-shaped rotary drivers of the hand power tool. The at least three rotary driving grooves are distributed along a circumference of the tool shank in such a manner that two rotary driving grooves are never located diametrically opposite to each other. The sum of cross-sections of rotary drive grooves located on one side of the longitudinal plane is substantially equal to a sum of cross-sections of rotary drive grooves located on another side of the longitudinal plane.

Sheet 1
Sheet 1
Sheet 2
Sheet 2

Abstract

A tool for use in a hand power tool has a tool shank to be received in the hand power tool and two diametrically opposite recesses formed in the tool shank for receiving locking bodies of the power tool, and at least three rotary driving grooves open at a rear end surface of the tool shank and located on both sides of said longitudinal plane passing through the two recesses, and symmetrically relative to a plane of symmetry that extends transverse to the longitudinal plane for receiving strip-shaped rotary drivers of the hand power tool. The at least three rotary driving grooves are distributed along a circumference of the tool shank in such a manner that two rotary driving grooves are never located diametrically opposite to each other. The sum of cross-sections of rotary drive grooves located on one side of the longitudinal plane is substantially equal to a sum of cross-sections of rotary drive grooves located on another side of the longitudinal plane.

1. Drawings

[0001]Sheet 1.

[0002]Sheet 2.

Publication information

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Citation

OpenTechnical Publication OT-2026-000003408, “Tool for use in a hand power device,” published September 15, 2026 at 20:23:47 UTC, https://opentechnical.org/p/OT-2026-000003408.

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