U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Pneumatic pressure automatic braking mechanism

Patent 5439346 Issued on August 8, 1995. Estimated Expiration Date: Icon_subject September 16, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3052984

3128079

3132426

3270417

3712386

Turbine type air motor
Patent #: 3945757
Issued on: 03/23/1976
Inventor: Cummens

Tool gas turbine motor
Patent #: 4141671
Issued on: 02/27/1979
Inventor: Tarsoly

Speed governed rotary device
Patent #: 4776752
Issued on: 10/11/1988
Inventor: Davis

Air motor Patent #: 5186603
Issued on: 02/16/1993
Inventor: Kishi

Inventors

Application

No. 122375 filed on 09/16/1993

US Classes:

415/18, Control of clutch or brake surface415/26, Responsive to moving member developed fluid force, current or pressure415/82, With control of runner speed or direction415/123Brake or clutch

Examiners

Primary: Look, Edward K.
Assistant: Larson, James A.

Attorney, Agent or Firm

International Class

F01D 001/34

Abstract

A braking mechanism for a rotary apparatus having a housing adapted to receive a pressurized fluid and a rotor rotatably mounted in the housing. The braking mechanism enables the rotor to rotate in the housing in response to the receipt of the pressurized fluid and inhibits the rotor from rotating in the absence of the receipt of the pressurized fluid.

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