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:
Aug. 07, 1979
Filed:
Nov. 03, 1977
Thomas L Mueller, St. Louis, MO (US);
Other;
Abstract
For thrusting perpendicular to a tire to demount it, or similar purposes, a hydraulic cylinder bearing a thrust shoe is pivotably mounted, by trunnion pins on its casing, to a support frame beneath a slotted platform. A forward arm and follower assembly pivots on the trunnion pins and extends diagonally forward normally to bear on the hydraulic cylinder casing; while a similar aft arm and follower assembly likewise pivots on the trunnion pins, extending aft and normally bearing on the opposite side of the hydraulic cylinder casing. Corresponding portions of these aft and forward assemblies are connected by coil springs; their inward pivotal movement is limited by a stop on the support frame; thus they constantly urge the hydraulic cylinder toward upright position. To correct angular drifting of the actuator rod, its shoe has a downward projecting centering shield having a tapered tip which engages a platform slot when the hydraulic cylinder is retracted, rotating the shoe to its proper position.