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. 05, 2001
Filed:
May. 21, 1999
Applicant:
Inventors:
Marc D. Curtis, Spencer, MA (US);
Gary Harris, Rockport, ME (US);
Assignee:
Curtis International, Inc., Worcester, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E01H 5/04 ; A01B 5/100 ; B60S 9/02 ;
U.S. Cl.
CPC ...
E01H 5/04 ; A01B 5/100 ; B60S 9/02 ;
Abstract
Control system for a jack for raising and lowering a lift assembly for hydraulically driven snow blades or other utilitarian accessories. Actuation of the jack allows for proper vertical alignment of the lift assembly for engagement to a vehicle chassis. Once engaged, the jack can be actuated into an inoperative position until the lift assembly is to be removed from the chassis. The control system includes several safety features that prevent the jack from being deployed when the snow blade is raised, and that automatically retract the jack when the snow blade is raised.