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:
Jan. 23, 1979
Filed:
Aug. 18, 1977
Wilburn C Willis, Hagerstown, IN (US);
Other;
Abstract
A resilient tip member, preferably molded as a unit from rubber, having a gripper pad, a crutch holder and an interposed sleeve portion. A pivot pin preferably has a disc-like upper portion disposed within the crutch holder, and a depending pin portion extending through the sleeve portion and into the gripper pad. An instep plate is disposed within the gripper pad and has an upwardly concave portion of generally complementary configuration with respect to the lower end of the depending pin portion with the two being in contact. Means for introducing lubricant into the contacting portions of the pivot pin and instep plate may be provided. Traction means may be removably or permanently secured to the ground engaging portion of the resilient tip member.