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:
Jun. 01, 1993
Filed:
Jan. 15, 1992
William K Engel, Peoria, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
The design and construction of seals located between a cylinder barrel and a barrel plate rotatable therewith for axial piston fluid translating units have caused an increase in overall unit size, increased stiffness between the barrel and barrel plate and an increase in manufacturing cost and complexity. The present invention overcomes these problems by providing an axially compact, combined circumferential and axial face seal means. The seal means includes an annular seal ring having a sealing end and a biasing end with the sealing end defining an annular seal face of a predetermined width. A biasing means is attached to the biasing end of the seal ring and includes a spring ring having a generally flat base plate with a plurality of resilient fingers angularly extending therefrom. The axially compact structure of the seal means of this invention provides the required flexibility between the barrel and barrel plate while reducing overall unit size, and cost and complexity of manufacturing.