Retractable baseball bat

Details Retractable baseball bat Retractable baseball bat

2007-01-23

2007-01-23

Graham, Mark S. (Department: 3711)

Games using tangible projectile

Player held and powered, nonmechanical projector, per se,...

Bat

C473S457000

Reexamination Certificate

active

11257061

ABSTRACT:
A baseball bat includes a tubular member having a slide rail, a tubular hitting portion sleeved on the tubular member, a handle inserted telescopically in the tubular member, and a locking unit having a first locking member provided on the handle and a second locking member disposed nonrotatably within the tubular member and slidable along the slide rail. The second locking member includes a main body having a tapering hole and an internal thread. The first locking member has an externally threaded tapering portion insertable into the tapering hole and engageable with the internal thread. The main body locks the handle against movement and permits the same to move relative to the tubular member when the externally threaded tapering portion is rotated threadedly in the tapering hole in an inward or outward direction.

REFERENCES:
patent: 6669584 (2003-12-01), Miller
patent: 6875137 (2005-04-01), Forsythe et al.
patent: 2002/0072436 (2002-06-01), Liu
patent: 2003/0013563 (2003-01-01), Ryan
patent: 2004/0048696 (2004-03-01), Ciesar et al.
patent: 2005/0153797 (2005-07-01), Nutter et al.

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