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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-5474139-A, on 12 December 1995. 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-2026-000003294

Device for power tools

Published
Permanent URL
Classification
Tools & Tooling › Powered Hand Tools
Assignee
BOSCH GMBH ROBERT
Original source
US-5474139-A, the United States Patent and Trademark Office, 12 December 1995
Document SHA-256
684a4dadcad6e1584e74adfdb80913cf8a8cf4ec15b579d10c695ef61c420583

A device on machine tools for transmitting a rotational and/or percussive movement to a tool (22) has two or three rotational drivers (14) which are arranged so as to be symmetrical with respect to rotation. The rotational drivers (14) are stepped and flank parts (16) extending radially to the center axis (15) alternate with guide portions (17) extending along a cylindrical outer surface. Locking members (20) which engage in depressions (28) at the tool (22) are arranged in the region of the rotational drivers (14) for the axial locking of the tools (10). With the tool holder (10) according to the invention, tool shafts having diameters between 8 and 12 mm can be clamped without converting or modifying the tool shafts. Good true running characteristics can be achieved in spite of the stationary rotational drivers (14).

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Abstract

A device on machine tools for transmitting a rotational and/or percussive movement to a tool (22) has two or three rotational drivers (14) which are arranged so as to be symmetrical with respect to rotation. The rotational drivers (14) are stepped and flank parts (16) extending radially to the center axis (15) alternate with guide portions (17) extending along a cylindrical outer surface. Locking members (20) which engage in depressions (28) at the tool (22) are arranged in the region of the rotational drivers (14) for the axial locking of the tools (10). With the tool holder (10) according to the invention, tool shafts having diameters between 8 and 12 mm can be clamped without converting or modifying the tool shafts. Good true running characteristics can be achieved in spite of the stationary rotational drivers (14).

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Publication information

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Citation

OpenTechnical Publication OT-2026-000003294, “Device for power tools,” published September 15, 2026 at 20:04:05 UTC, https://opentechnical.org/p/OT-2026-000003294.

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Terms

This record reproduces a document published elsewhere and is provided for reference and study. Rights in the original remain with its owner. See the publication policy.