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:
Dec. 04, 1990
Filed:
Feb. 17, 1989
Anthony Pruszenski, Jr, Newbury, MA (US);
Energy Innovations, Inc., Mineral Wells, TX (US);
Abstract
An end stop is disclosed for limiting the maximum displacement of a flexible member so as to minimize stress on this member and thus provide an extended surface life. The flexible member is rigidly supported at at least two spaced-apart points such that the flexible member can flex in the region between these points. The end stop includes a support member for clamping the flexible member at the two supporting points and a wall surface arranged in opposed, facing relationship to the flexible member in the region between the two points. The curvature of the wall surface is defined by first and second curves that form a continuous curvature and have first and second derivatives of the local angle .phi. of the tangent to the curve with respect to the distances along the curve which are zero.