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:
Jun. 12, 1990
Filed:
Apr. 14, 1989
Junichi Hayakawa, Tokyo, JP;
Velbon International Corporation, Torrance, CA (US);
Abstract
A leg locking device for a telescopically extensible leg of a tripod support which prevents deformation of an inner leg section so as to provide secure, long-lasting engagement of the locking device. Each telescopically extensible leg of the tripod supports includes at least one pair of outer and inner tubular leg sections telescopically slidable one within the other, wherein each tubular leg section has a six-sided polygonal cross-section. A leg locking device associated with each telescopically extensible leg has a locking lever mounted on the outer leg section for pivotal movement transverse to the longitudinal axis of the telescopically extensible leg. In the locking position, an eccentric cam element on the locking lever engages an angled wall of the inner leg section, so as to apply a locking force diagonally across the cross-section of the inner leg section, and thus urge the diagonally opposite corner of the inner leg section into frictional engagement with the corresponding corner of the outer leg section.