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. 16, 2003
Filed:
Nov. 12, 2002
Kabushiki Kaisha Kosmek, Hyogo, JP;
Abstract
A clamp rod ( ) is inserted into a housing ( ) rotatably around an axis and movably downwards for clamping. The clamp rod ( ) has an outer peripheral portion formed with three guide grooves ( ) which are arranged peripherally at substantially the same spacing. An engaging ball ( ) which is fitted into every guide groove ( ) is supported by a lower end wall ( ) of the housing ( ). Each of the guide grooves ( ) comprises a rotary groove ( ) and a straight groove ( ) which is in upward continuity with the rotary groove ( ). The rotary grooves ( ) as well as the straight grooves ( ) are arranged in parallel with one another. A partition wall between the adjacent guide grooves ( ), ( ) has a minimum thickness (T) set to a value smaller than a diameter (D) of the engaging ball ( ).