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:
Jul. 12, 1977
Filed:
Oct. 24, 1975
Allan E Schwartz, Yonkers, NY (US);
Richard E Frenkel, Scarsdale, NY (US);
Other;
Abstract
The mechanism for varying the diameter of a body in accordance with this invention is defined by a mechanism in which the grip area intended for expansion comprises a plurality of compressible O-ring elements supported by a cylindrical body section and spaced apart by spacer elements. A stationary end plate which may be formed by the tip portion of a writing implement, forms an abutment against which an end O-ring will be forced for compression. An axially movable adjustment member is also carried on the cylindrical body for engagement with the opposite end O-ring so that as the adjustment member is moved toward the abutment member the plurality of O-rings therebetween will be compressed so that their cross-sectional shapes will be deformed from circular to elliptical thus enlarging the overall outside diameter of the grip portion.