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:
Apr. 28, 2009
Filed:
Aug. 19, 2004
Clifton J. Ratza, Grand Rapids, MI (US);
Trent A. Eekhoff, Grand Rapids, MI (US);
Clifton J. Ratza, Grand Rapids, MI (US);
Trent A. Eekhoff, Grand Rapids, MI (US);
Milsco Manufacturing Company, A Unit of Jason Incorporated, Milwaukee, WI (US);
Abstract
A vehicle seat, seat shell, suspension, and bolster therefor. Where a bolster is used, the bolster has a positive lock when in an elevated configuration. The suspension includes at least one beam spring that extends across a seat pan. In one preferred embodiment, a pair of such springs is carried by the pan. The springs preferably differ in compliance from one another and from a mesh load supporting grid that is connected to each spring. One such arrangement produces a suspension of progressive construction that enables the seat to handle a wide range of shocks, bumps, jolts, and vibration of varying frequencies and magnitudes. In one preferred embodiment, the seat includes a movable bolster movably attached to either the seat or shell. In a preferred embodiment, the bolster travels along a parabolic path when moved between its down and up positions.