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. 23, 2003
Filed:
Nov. 18, 2002
Kabushiki Kaisha Kosmek, Hyogo, JP;
Abstract
A housing ( ) has an upper end wall ( ) and a lower end wall ( ) which support an upper slide portion ( ) and a lower slide portion ( ) of a clamp rod ( ) vertically movably, respectively. The rod ( ) is moved downwards for clamping through a clamp spring ( ). The lower slide portion ( ) has an outer periphery provided with guide grooves ( ), each of which comprises a helical rotary groove ( ) and a straight groove ( ), peripherally in plural number. Engaging balls ( ) which are fitted into the respective guide grooves ( ) are rotatably supported by through holes ( ) provided in an upper portion of the lower end wall ( ). A sleeve ( ) is externally fitted over the engaging balls ( ) rotatably around an axis.