Shock-absorbing winch

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4480817
SERIAL NO

06466072

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A shock-absorbing winch comprising a drive shaft reversibly rotatable by a drive unit and having a cylindrical outer peripheral surface, a hollow winch drum surrounding the drive shaft and forming a cylindrical hollow space therein around the outer peripheral surface of the drive shaft, a first stopper fixed to the outer peripheral surface of the drive shaft at a suitable location in the circumferential direction thereof, a second stopper fixed to the inner peripheral surface of the winch drum at a suitable location in the circumferential direction thereof and dividing the cylindrical space into first and second circular arc compartment between the first and second stoppers, a first shock absorber disposed in the first compartment, and a second shock absorber disposed in the second compartment. Since the winch does not require provision of another shock absorber independently thereof, the winch can be installed without the limitation that would be needed, for example, for rigging a ship.

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Patent Owner(s)

Patent OwnerAddress
DIRECTOR GENERAL TECHNICAL RESEARCH AND DEVELOPMENT INSTITUTE (TRDI) THE DEFENSE AGENCY A JAPANESE GOVERNMENT2-24 IKEJIRI 1-CHOME SETAGAYA-KU TOKYO
HITACHI ZOSEN CORPORATION A CORP OF JAPAN6-14 EDOBORI 1-CHOME NISHI-KU OSAKA

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Koshoji, Yoshihiro Tokyo, JP 1 2
Sato, Kenji Maizuru, JP 538 4969

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