The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 1999
Filed:
Mar. 05, 1998
Applicant:
Inventor:
Warren R Wisecarver, Walnut Creek, CA (US);
Assignee:
Bishop-Wisecarver Corporation, Pittsburg, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60D / ;
U.S. Cl.
CPC ...
280508 ; 280510 ; 280511 ;
Abstract
A trailer hitch (10) including a pair of clamping jaws (12) and a retractable jaw locking member in the form of a wedge block (84) that is spring biased to move between the jaws (12) in order to lock the jaws in a closed position about a hitch ball. A latch mechanism (94) secures the wedge block (84) in its retracted position away from the jaws (12). A plunger dog (46) is pivoted by a handle mechanism (28) to reposition wedge block (84) and a safety pin mechanism (64) is provided to secure the plunger dog (46) in position and thereby secure wedge block (84) in position.