Amusement devices: games – Striking weapon – Telescopic
Reexamination Certificate
1998-02-17
2001-05-15
Pierce, William M. (Department: 3304)
Amusement devices: games
Striking weapon
Telescopic
C403S368000
Reexamination Certificate
active
06231447
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a new and improved multi stage positive lock tubular expandable police baton. Police batons are used by police for crowd control and other police duties in place of the conventional wooden billy clubs. Expandable police batons are shown for example in U.S. Pat. Nos. 5,320,348 and 5,160,140.
The present invention provides a new and improved positive lock quick release police baton. In particular, the collapse of the extended sections into the larger tubular section is accomplished by the use of a single axially positioned push button mechanism.
SUMMARY OF THE INVENTION
This invention discloses a positive lock button release police baton preferably having three sections. Each section successively gets smaller in diameter with the smaller sections telescoping into and out of larger section in which they are slidably positioned.
In this baton, the middle section and the smaller inner section are moved outwardly until they are locked in place by locking means when each of the sections are fully extended. To cause the collapse of the sections into one another, a push button is depressed to cause an axially positioned cam member to disengage the lock holding the middle section to permit it to telescope into the larger end section. While the middle section is telescoping into said larger diameter end section, the lock holding the smaller section in place relative to said middle section is caused to disengage by a second camming surface of said cam member so that the smaller end section may telescope into said middle section.
The baton may be made out of metal such as steel, aluminum or any combination of same. The preferred steel is an alloy steel such as 4130. The steel may be hardened if desired to 38 to 44 Rockwell C using conventional heat treating process which produce martensite or bainite steel. The preferred aluminum is 6061-T6.
REFERENCES:
patent: D. 359338 (1995-06-01), Starrett
patent: 4037839 (1977-07-01), Nelson
patent: 4982960 (1991-01-01), David
patent: 5036873 (1991-08-01), Clayton
patent: 5160140 (1992-11-01), Starrett
patent: 5320348 (1994-06-01), Starrett
Banner & Witcoff , Ltd.
Linek Ernest V.
Monadock Lifetime Products, Inc.
Pierce William M.
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