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. 07, 2005
Filed:
May. 23, 2003
Applicant:
Jefferson Hall, Concord, NH (US);
Inventor:
Jefferson Hall, Concord, NH (US);
Assignee:
FCI Americas Technology, Inc., Reno, NV (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23B045/04 ;
U.S. Cl.
CPC ...
Abstract
Disclosed herein is a fluid control system for varying the power available to a fluid powered tool, a hydraulically driven impact wrench. The system disclosed herein varies power available to the tool by use of a bypass mechanism that is downstream of a directional control valve spool. Among other things, the advantageous placement of the bypass valve limits the thermal burden in the hydraulic circuit.