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. 28, 1990
Filed:
May. 15, 1989
Fritz Buhler, Ecublens, CH;
Abstract
The carriage comprises a frame (10) with two end axles (10A, 10B), between which is located a bissel truck (10C, 16), the chassis (16) of which is articulated on one of these end axles (10A), and a guide bar (18) articulated between the axle (10C) of the bissel truck and the other end axle (10B). At least one wheel (C) of the bissel truck functions as a rail tracer. Grinding heads (T1, T2; T5, T6) are articulated on this chassis (16) and on this guide bar (18) by means of connecting rods (S1, S2; S5, S6) and are thus guided independently of the positions of the end axles, in such a way that the contact point of each grinding wheel (M1, M2; M5, M6) follows the rails independently of curves, thus compensating the cambers at these points. The carriage can have several successive bissel trucks articulated on one another, each guiding grinding heads, or a system of levers for the indirect guidance of the grinding heads, this system being controlled by a bissel measuring truck. To compensate the variation of the rails, telescopic bissel trucks can be provided.