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:
Nov. 19, 1991
Filed:
Mar. 21, 1990
Richard L Chapman, Waverly, KS (US);
Lewis E Barb, Emporia, KS (US);
Other;
Abstract
A tandem axle trailer pin extracter device for extracting lodged tandem axle trailer locking pins when repositioning the trailer relative to tandem axles thereunder. The self-contained, portable device comprises a hook-like mechanism for engaging the release handle which dislodges the locking pins. A pair of spring-loaded handles is placed in a cocked position such that a constant bias is constantly applied to the release handle while an operator rocks the trailer and axles back and forth, allowing the device to automatically and unattendedly extract the pins. After slowly moving the trailer forward or backward to the desired location for repositioning the trailer body relative to the axles, the bias is removed from the release handle and the device is disengaged therefrom. The trailer is then eased forwardly or rearwardly to the nearest set of bores whereat the spring-loaded pins automatically seek a locking position therein, rigidly securing the position of the trailer body relative to the tandem axles until such time as a subsequent load requires a re-adjustment of the relative position therebetween.