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:
Apr. 08, 2014

Filed:

Aug. 03, 2011
Applicants:

Richard G. Haworth, Holland, MI (US);

Harold R. Wilson, Holland, MI (US);

Inventors:

Richard G. Haworth, Holland, MI (US);

Harold R. Wilson, Holland, MI (US);

Assignee:

Haworth, Inc., Holland, MI (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A47B 96/06 (2006.01); A47K 1/00 (2006.01); A47K 5/00 (2006.01); E04G 3/00 (2006.01); E04G 5/06 (2006.01);
U.S. Cl.
CPC ...
Abstract

An automatic gap adjustor is provided. The automatic gap adjustor includes an upper cammed disk, a lower cammed disk spaced apart from the upper cammed disk, and a resilient spring element therebetween. The upper cammed disk includes a first plurality of cams on an upper axial surface and a second plurality of cams on a lower axial surface. The lower cammed disk includes a third plurality of cams on an upper axial surface and a fourth plurality of cams on an undercut portion spaced apart from the upper axial surface. Opposing cams can be radially offset from each other, such that reciprocating axial movement of the upper disk relative to the lower disk can achieve a stepped rotation of the upper disk. Rotation of the upper disk can drive the automatic gap adjustor along a threaded support to eliminate a gap along a portion thereof.


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