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.

Date of Patent:
May. 24, 2005

Filed:

Sep. 06, 2002
Applicants:

Mark S. Hollinrake, Marion, IA (US);

Mary T. Goos, Masonville, IA (US);

Mike Voorhees, LaFargeville, NY (US);

Lyle Seaman, Clayton, NY (US);

Inventors:

Mark S. Hollinrake, Marion, IA (US);

Mary T. Goos, Masonville, IA (US);

Mike Voorhees, LaFargeville, NY (US);

Lyle Seaman, Clayton, NY (US);

Assignee:

Henderson Manufacturing Company, Manchester, IA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E01H005/04 ;
U.S. Cl.
CPC ...
Abstract

A plow for mounting to a vehicle is disclosed. The plow can include a moldboard having a movable cutting edge and an adjustable bias trip mechanism having a biasing member preferably in the form of a spring. The adjustable trip mechanism can be arranged with the cutting edge of the moldboard to urge the cutting edge to a plowing position. The spring can be cooperatively arranged with a retainer, a pin for example, at one or more retaining positions to impart a preload biasing force upon the spring that varies according to the retaining position selected. The preload biasing force can act as a trip resistance force which must be overcome before the cutting edge moves. A lever tool can be provided for adjusting the spring.


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