US Patent No: 4,791,243

Number of patents in Portfolio can not be more than 2000

Compact device for long stroke energy absorption

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Importance

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Abstract

A compact device for absorbing kinetic energy generated by, for example, broken electric power lines on electric power transmission towers. The device consists of a non-spring helix, or in or out of plane flat coils that are placed between an electric transmission tower and the conductor insulator. The device deforms by plastically uncoiling in response to forces greater than a predetermined force. The device is a single-event device, designed to be replaced after one extraordinary dynamic event. The device can also be used in other structures or machinery requiring compact long stroke energy absorption.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ANCO ENGINEERS, INC.CULVER CITY, CA10

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ibanez, Paul Culver City, CA 3 53
Merz, Kelvin L Los Angeles, CA 1 6

Cited Art

Patent Info (Count) # Cites Year
 
NIPPON SOKEN, INC. (1)
4,258,934 Seat belt tensioning device 31 1979

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
D B INDUSTRIES, LLC (1)
6,279,680 Energy absorbing connector 6 2000
 
SALA GROUP LIMITED (1)
5,224,427 Fall-arrest systems with yielding mounting bracket for inspection purposes 23 1992
 
XCESSORIES SQUARED (1)
7,434,778 Breakaway signpost connector 2 2005
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (3)
6,857,666 Spring and apparatus for its use 1 2002
7,057,103 Transmission tower devices for reducing longitudinal shock loads 7 2005
7,732,708 Longitudinal load limiting devices for transmission lines and the like 1 2005