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:
Apr. 30, 1996
Filed:
Dec. 15, 1994
Charles G Macku, Cedar Rapids, IA (US);
Cedarapids, Inc., Cedar Rapids, IA (US);
Abstract
An improved screed control device includes two pairs of interacting cylindrical surfaces for controlling the 'angle of attack' or elevation of a screed of a paver, a first pair of the two pairs of interacting surfaces having either right-hand or left-hand threads and the other pair of interacting surfaces having threads with handedness opposite from that of the first pair. A reversing pin is adapted to selectively maintain one pair of the two pairs of interacting surfaces stationary relative to each other as a hand-crank arrangement operationally causes the other pair to threadably interact. Handedness of the control device is accomplished by moving the reversing pin to a different set of co-linearly aligned apertures such that the threadably interacting pair of the two pairs of interacting surfaces are caused to become stationary relative to each other and the stationary pair to become threadably interacting relative to each other. The apertures may be slots with major axes parallel to an longitudinal axis of the device to simplify insertion of the reversing pin. First and second embodiments provide additional arrangements for the two pairs of interacting surfaces.