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:
May. 07, 1996
Filed:
Sep. 29, 1993
Gregory A Michaels, Seven Hills, OH (US);
David D Polacsek, Elyria, OH (US);
Invacare Corporation, Elyria, OH (US);
Abstract
A filled envelope for use with a shaped tray in a wheelchair comprises upper and lower elastomeric elements. The elements have seals about their edges to create a finite volume. The volume is filled with a fill material which comprises petrolatum and hollow glass spheres. The volume of petrolatum comprising the fill material is not substantially greater than the volume of the interstitial spaces of a quantity of hollow glass spheres alone. The envelope also has additional seals which separate the envelope into quadrants to improve the stability of the cushion to the user.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile