Hydraulic-boosted rail brake

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9738491
APP PUB NO 20160221795A1
SERIAL NO

14609729

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A hydraulic-boosted rail brake is provided for use with an elevator having a guide rail. The rail brake includes a braking plate having friction material, a spring package in communication with the braking plate, a hydraulic cylinder, a piston housed at least partially inside the hydraulic cylinder, and a brake controller. The braking plate is selectively movable relative to the guide rail, and the spring package biases the friction material to interact with the guide rail to cause braking. The piston is in communication with the braking plate and is selectively: (a) movable in a release direction to diminish or overcome force from the spring package; and (b) movable in an engage direction to supplement the force from the spring package. The brake controller selectively causes the piston to move in the release direction and in the engage direction.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
THYSSENKRUPP ELEVATOR AG40211 DÜSSELDORF

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Anderson, John Keith Jackson, US 2 5
Delk, William K Olive Branch, US 2 4
Dudde, Frank P Collierville, US 6 30
Feldhusen, Peter F Collierville, US 2 4
Palazzola, Mike Horn Lake, US 5 28
Parker, Alan M Byhalia, US 8 45
Stone, Olivia Memphis, US 3 6
Xu, Jie Cordova, US 153 715

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