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:
Nov. 01, 1994
Filed:
May. 03, 1993
Applicant:
Inventors:
Gustav Schumacher, D 5231 Eichelhardt, DE;
Guenter Schumacher, D 5231 Eichelhardt, DE;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01D / ; A01D / ;
U.S. Cl.
CPC ...
56 104 ; 56DI / ; 172-2 ;
Abstract
An hydraulic elevating mechanism for lifting and lowering an engineering structure which is sluingly supported around a rotational axis on a base unit, has two or more hydraulic lift cylinders pivoted to the base unit at one end and to the engineering structure to be slued at the other. The lift cylinders are controlled by hydraulic control circuits separated from each other and such that at least one of the lift cylinders is connected to a pressure reservoir.