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:
Dec. 17, 2002
Filed:
Jul. 13, 2001
Carlos Castillo, Coconut Creek, FL (US);
Other;
Abstract
A self-contained hydraulic system used with lifting mechanisms to aid in the lifting of their arms before undertaking lifting operations. The system includes a hydraulic reservoir for a liquid and a gas that share the space under pressurized conditions. A hydraulic control assembly regulates flow through the outlet of the reservoir to use from a hydraulic assembly used to lift the arm of a lifting mechanism. The hydraulic control assembly includes two normally closed, electrically activated valves, connected in series. One of them being unidirectional and including a bypass valve to graduate the flow and thus the speed at which the lifting arm moves. Optionally, a flow fuse valve can be used to limit the maximum flow through the system.