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:
Aug. 20, 2002
Filed:
Jan. 07, 1999
Vladimir Zemlyakov, Haverhill, MA (US);
Patrick McDonough, Kensington, NH (US);
Other;
Abstract
Disclosed is a high precision resistance device that allows a user to set and hold exact load amount and pattern of loading in exercise machine. The one embodiment of the device includes a hydraulic cylinder having a piston and two valves, two driving members, a driven member, a cam, and a connecting rod. Each valve can change flow section area in the hydraulic cylinder. One valve manually sets an original level of an exercise load. Second valve is adjusted by the cam to maintain a predetermined pattern of the exercise load. The cam can be easily change for another one having different shape and providing accordingly the predetermined pattern of the exercise load, that is pattern of loading applied to a user's muscular system in operation. Driving members are adapted to receive a plurality of exercise accessories. The resistance device can be installed in actually any conventional fitness machine to transform it into precise equipment for medical research, therapy, and rehabilitation. It also can be used as a stand-alone compact and inexpensive unit with many possibilities to perform both medical and fitness exercises to predetermined programs.