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. 24, 1979
Filed:
Dec. 12, 1977
Applicant:
Inventors:
Robert L Propst, Ann Arbor, MI (US);
Paul L Propst, Ann Arbor, MI (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60B / ;
U.S. Cl.
CPC ...
16 1 / ; 16 47 ;
Abstract
A caster including a pair of diametrically opposed rollers having axes of rotation which are angled with respect to the supporting surface on which the caster travels. During movement of the caster, the rollers exert opposing transversely-directed forces on the caster thereby enabling the caster to be moved in its directed path without the creation of forces on the caster by the rollers which would tend to deflect the caster from its path.