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:
Aug. 13, 1991
Filed:
Jul. 31, 1990
Harold M Bowman, Fairview Park, OH (US);
Other;
Abstract
A peripherally adjustable insert is shown for raising the grade of a generally rectangular grating that previously was supported by the end sills of the frame and by the roadway-side longitudinal sill if the frame has one. The insert comprises a base having support elements, the base being adjustable in length and adapted to rest on said sills, and ledge and keeper elements supported by the base to seat the grating restrict its lateral movement. The support elements of the base comprise a pair of essentially parallel end elements and a pair of essentially parallel side elements, and the support elements being equipped with terminals that are joined to form these base elements generally into a rectangle. The rectangle includes spreader means such as turnbuckle bolts that form matched adjustable junctions between each terminal of at least one end support element and a terminal of each side support element for rendering said at least one end support element movable in the plane of the longer axis of the rectangular base.