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:
Oct. 11, 1983
Filed:
Apr. 30, 1981
Theo Meller, Eitorf, DE;
Heinz Knecht, Eitorf, DE;
BOGE GmbH, Eitorf, DE;
Abstract
A self pumping, level regulating apparatus for vehicles comprises at least one hydropneumatic, telescoping spring element, and a pumping and regulating element for pumping oil into the work chamber of the spring element as a function of the motion of an axle of the vehicle, to raise the level of oil in the work chamber, and hence the level of the vehicle and for moving oil out of the work chamber when a predetermined level is exceeded. In contrast to an arrangement where the telescoping spring element and the pumping and regulating element are integrated and disposed between relatively movable members, such as levers fixed to two associated swinging axle halves, only the pumping and regulating element is so disposed, and the telescoping spring element is separately disposed between the vehicle body and the wheel axle. A better distribution of force is thus achieved. Moreover, a single pumping and regulating element can serve a number of hydropneumatic spring elements. An advantageous form of pumping and regulating element includes a pumping chamber with a pump rod, with passages controlled by the pump rod so as to automatically return oil from the work chamber of the spring element to the oil reservoir when a predetermined oil or vehicle level is exceeded.