Invention Grant
- Patent Title: Bi-directional quick change tool-less lever and wedge actuated collet chuck, system and/or method for using the same
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Application No.: US14109768Application Date: 2013-12-17
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Publication No.: US09302329B2Publication Date: 2016-04-05
- Inventor: Edward John Rohr, Jr.
- Applicant: Edward John Rohr, Jr.
- Applicant Address: DE Stuttgart
- Assignee: Robert Bosch GmbH
- Current Assignee: Robert Bosch GmbH
- Current Assignee Address: DE Stuttgart
- Agency: Maginot Moore & Beck LLP
- Main IPC: B23B35/00
- IPC: B23B35/00 ; B23B31/20

Abstract:
A bi-directional quick change tool-less lever and wedge actuated collet chuck, a system and/or a method provide symmetrical tool bit shank holding pressure before, during and after operation of a rotary-style power tool. The collet chuck is attached to and/or is integrated with high speed, variable speed and/or low speed rotary-style power tools, such as, for example, electrically driven rotary-style power tools and/or pneumatically-driven rotary-style power tools. The collet chuck provides tool-less automatic and/or tool-less manual tightening of the collet around a shank of an accessory for the rotary-style power tool. The collet chuck, the system and/or the method provide tool-less manual loosening of the collet for accessory replacement.
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Information query