Indicator cap and method of manufacture thereof

Details Indicator cap and method of manufacture thereof Indicator cap and method of manufacture thereof

1997-03-12

1998-12-29

Tanner, Harry B.

Refrigeration

With indicator or tester

62129, 116276, F25B 4902

Patent

active

058529373

ABSTRACT:
A sight glass assembly for visually indicating the presence of moisture, oil or an acid in a refrigerant flow of a refrigeration or air conditioning system and a method of manufacture thereof is disclosed. The sight glass assembly includes an indicator cap attached to an in-line connector body. The indicator cap includes a piece of transparent sight glass. The sight glass is attached to the indicator cap and to a retaining tube that holds an indicator material. In a preferred embodiment, the sight glass is attached to the indicator cap and to the retaining tube by at least partially melting the sight glass so that it bonds with the indicator cap and, when the sight glass is in at least a partially molten condition, pressing the retaining tube into an inside surface of the sight glass to fixedly attach the retaining tube to the sight glass.

REFERENCES:
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patent: 3225555 (1965-12-01), Chatlos
patent: 5103648 (1992-04-01), Barbier
patent: 5113671 (1992-05-01), Westermeyer
patent: 5271245 (1993-12-01), Westermeyer
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patent: 5404730 (1995-04-01), Westermeyer
patent: 5542499 (1996-08-01), Westermeyer
patent: 5553460 (1996-09-01), Isaacs
Brochure entitled: "Compressor Protective Devices", by AC&R Components, Inc., Catalog 12B, printed Feb. 1996.

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