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:
Mar. 06, 2001
Filed:
Sep. 27, 1999
Gerhard Eibler, Heiligenkreuz a.W., AT;
Steyr-Daimler-Puch Fahrzeugtechnik AG & Co. KG, Vienna, AU;
Abstract
A power transmission unit having an input section and an output section and a hydraulic clutch which depends on the rotational speed difference, in which unit a hydrostatic displacement machine (,) generates a pressure on the occurrence of a rotational speed difference between the input section (,) and the output section (,), which pressure causes a reduction in the rotational speed difference. The displacement machine consists of parts (,) respectively drive-connected to the input section and the output section and one of the sections (,) forms a housing (,) containing the displacement machine, the displacement machine drawing in working fluid from a suction space. In order to prevent sealing problems and pressure build-up not due to foaming, the suction space (,) is formed by a shell (,) surrounding the housing (,) and firmly connected to the latter in a fluid-tight manner, which shell is in fluid connection with the inside of the housing (,), and the suction space and the inside of the housing are completely filled with working fluid. The suction space (,) can be connected to a chamber (,) which is partially bounded by a flexible wall (,). The fluid filling can be under positive pressure.