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

Compressor with protection module

Patent 5975854 Issued on November 2, 1999. Estimated Expiration Date: Icon_subject May 9, 2017. 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

3735377

3763397

3783681

Method and apparatus for automatic abnormal events monitor in operating plants
Patent #: 4060716
Issued on: 11/29/1977
Inventor: Pekrul ,   et al.

Control unit for oil wells
Patent #: 4102394
Issued on: 07/25/1978
Inventor: Botts

Method of avoiding abnormal combination in an internal combination engine and an arrangement for carrying out the method
Patent #: 4372119
Issued on: 02/08/1983
Inventor: Gillbrand ,   et al.

Control apparatus and method for an oil-well pump assembly
Patent #: 4390321
Issued on: 06/28/1983
Inventor: Langlois ,   et al.

Vibration sensor and electrical power shut off device
Patent #: 4390922
Issued on: 06/28/1983
Inventor: Pelliccia

Compressor surge counter
Patent #: 4399548
Issued on: 08/16/1983
Inventor: Castleberry

Fail safe dynamoelectric machine bearing
Patent #: 4425010
Issued on: 01/10/1984
Inventor: Bryant ,   et al.

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Inventors

Assignee

Application

No. 853864 filed on 05/09/1997

US Classes:

417/18, Single motor control element responsive to means sensing diverse conditions417/32, Responsive to pump or pump fluid temperature417/44.1By control of electric or magnetic drive motor

Examiners

Primary: Freay, Charles G.
Assistant: Evora, Robert Z.

Attorney, Agent or Firm

International Class

F04B 049/00

Abstract

A protection system for a scroll machine provides temperature, mis-wiring and vibrational protection for the scroll machine. The vibrational protection comprises a vibration sensor which is integrated on the circuit board of the protection system. The vibration sensor, in conjunction with at least one timer, monitors the vibrations of the scroll machine and will shut down the machine when excess vibrations are sensed over a prespecified period of time. The temperature system monitors operating temperature conditions and the mis-wiring system monitors the power supplied to the compressor. Once an undesirable characteristic is identified, the operation of the scroll machine is stopped. These protection systems are integrated into a single module which identifies the reason of shutting off the scroll machine in order to simplify repairs needed.

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