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:
Sep. 18, 1979
Filed:
Oct. 25, 1977
Harry W Mulcahy, Griffith, IN (US);
Horst T Kaufhold, Chicago, IL (US);
AMSTED Industries Incorporated, Chicago, IL (US);
Abstract
A three-piece dampener assembly provides means to depress vertical and horizontal oscillations between ends of a bolster of a railroad car truck and side frames of the truck. This assembly includes a control or friction shoe having an outer vertical engaging surface for contact with a vertical wear plate of a pocket formed in the side frame and an inner projecting triangular-shaped segment. The triangular segment is covered by a relativley low friction adapter and engages a like triangular-shaped wedge slot formed in a control or friction shoe housing. The housing further includes an inclined wear surface for engaging with a complementary inclined friction surface formed in the bolster and a bottom surface for supportive engagement with a coil spring carried in the side frame pocket below the bolster.