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:
Jul. 06, 1999
Filed:
Oct. 09, 1997
Andrew J Wells, Bemidji, MN (US);
Jarvis Products Corporation, Middletown, CT (US);
Abstract
A hand held power assisted shears has a piston located in a cylinder formed in a pistol grip body. A trigger controls the position of a hollow shuttle spool rod which slides longitudinally within a hollow piston rod connected between the piston and the blades. The hollow shuttle spool rod carries pressurized working fluid to the piston where it is directed to the space above or below the piston. The piston drives the blades through the piston rod to a position corresponding to the position of the trigger allowing the operator to continuously control the position of the blades and the extent and rate of closure during cutting. The relative position of the shuttle spool rod and the piston rod controls whether the working fluid is directed above or below the piston to open or close the blades. One end of the shuttle spool rod acts as a piston which causes the blades to open automatically when the trigger is released. The blades and trigger may be removed without tools for cleaning the shears or sharpening the blades.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile