Multiple bit hand tool with automatic bit locking

Details Multiple bit hand tool with automatic bit locking Multiple bit hand tool with automatic bit locking

2007-01-02

2007-01-02

Hail, III, Joseph J. (Department: 3723)

Tools

Handle for tool

Having storage compartment

C081S439000

Reexamination Certificate

active

10926965

ABSTRACT:
The hand tool has a chuck with a central axial opening through which bits or other tool elements are selectively moved from a retracted position to an extended operative position. A mechanical element automatically engages the tool element, such that as the tool element reaches its operative position, it is automatically locked in place, such that it cannot be retracted without user intervention to retract the mechanical element and thereby permit retraction of the tool element. In a specific preferred embodiment the mechanical element is at least one pivotally mounted cam, biased to engage the tool element once the tool element is extended to its operative position. A user-operable mechanism such as a collar for example, spring-biased against retraction, is arranged to contact the cam when retracted against the force of the spring, to rotate the cam so that it no longer engages the tool element, thus allowing the tool element to be retracted to its storage position.

REFERENCES:
patent: 1910275 (1933-05-01), Alden
patent: 2629423 (1953-02-01), Stettler
patent: 2635661 (1953-04-01), Egan
patent: 3006395 (1961-10-01), Dye
patent: 3750729 (1973-08-01), Lemieux
patent: 4692073 (1987-09-01), Martindell
patent: 4716795 (1988-01-01), Corona et al.
patent: 4762036 (1988-08-01), Orlitzkey et al.
patent: 4768405 (1988-09-01), Nickipuck
patent: 4953640 (1990-09-01), Kurt
patent: 5013194 (1991-05-01), Wienhold
patent: 5325745 (1994-07-01), Koehler
patent: 5337637 (1994-08-01), Bih-Lien
patent: 5526721 (1996-06-01), Waisvisz
patent: 5673600 (1997-10-01), Yanagi et al.
patent: 5791212 (1998-08-01), Han
patent: 5813296 (1998-09-01), Hoff et al.
patent: 5934384 (1999-08-01), Wang
patent: 6053675 (2000-04-01), Holland et al.
patent: 6205893 (2001-03-01), Sato
patent: 6332384 (2001-12-01), Cluthe
patent: 6394715 (2002-05-01), Boyle et al.
patent: 6533291 (2003-03-01), Huggins et al.
patent: 297 08 384 (1997-08-01), None
patent: 298 20 263 (1999-01-01), None

Affiliated with

Also associated with

Rating

Multiple bit hand tool with automatic bit locking does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multiple bit hand tool with automatic bit locking, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple bit hand tool with automatic bit locking will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3813991