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

Transport refrigeration system

Patent 4787214 Issued on November 29, 1988. Estimated Expiration Date: Icon_subject November 23, 2007. 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

773426

2130995

2157758

2213327

2258970

2546856

2687650

2720087

2910839

3220211

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Inventor

Assignee

Application

No. 07/124323 filed on 11/23/1987

US Classes:

62/228.4, By variable speed motor or pulley type mechanism62/180, External fluid and refrigeration producer62/267, INTERLOCKED DIVERSE FUNCTION ELEMENTS62/323.4With clutch or variable speed transmission controlling compressor drive

Examiners

Primary: Tanner, Harry B.

Attorney, Agent or Firm

International Classes

B60H 1/32 (20060101)
F25B 49/02 (20060101)

Abstract

A transport refrigeration system including a compressor, an evaporator, a condenser, an air mover assembly for the evaporator and condenser comprising fans and/or blowers, and a prime mover for the compressor having first and second selectable speeds. The speed of the air mover assembly is mechanically interlocked with the speed of the prime mover via a pulley driven speed changer, to eliminate the possibility of overspeeding of the air mover assembly. The speed changer changes the speed of the prime mover by a mechanical movement which cannot be made without tension in the pulley belts automatically changing the pulley ratio of the speed changer, to maintain a substantially constant speed for the air mover assembly, notwithstanding a change in prime mover speed.

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