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:
Aug. 07, 2007
Filed:
Mar. 17, 2006
Paul Kirsch, Castro Valley, CA (US);
Paul Kirsch, Castro Valley, CA (US);
Other;
Abstract
A pneumatic tool () for impacting a workpiece () is provided. The tool () comprises a casing () defining a chamber (). A piston () is slidable within the chamber () along an operational axis (A). An exhaust valve () controlled by a pilot valve () slides the piston () by selectively introducing and releasing pressurized fluid into and out from the chamber (). The pilot valve () includes a valve housing () defining a pilot chamber () with a plunger () slidable in the pilot chamber (). The pilot valve () actuates the tool () by quickly releasing pressurized fluid from the exhaust valve () to atmosphere. The pilot valve () includes a spring-biased annular seal () that is releasable from a poppet seat () to perform this function.