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. 08, 1979
Filed:
Dec. 16, 1977
Dale E Holmes, Marshall, MI (US);
Donald W Konkle, Tekonsha, MI (US);
C James Warner, Battle Creek, MI (US);
Richard L Hansen, Battle Creek, MI (US);
Other;
Abstract
A monolithic ball structure made of resilient material and consisting of two equal diameter spherical sections connected by a neck portion of reduced diameter. The neck portion is defined by a segment of a surface generated by the revolution of a planar arc about an axis lying in its plane. The axis in this particular structure coincides with the common axis connecting the center points of the two aforementioned spheres. The radius of the arc is one-eighth of the diameter of the sphere in one particular embodiment thereof. The resilient material has a Durometer hardness value in the range of 40 shore A to 60 shore A.