Combined pressure and thermal safety valve

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Information

Patent Grant
D321241

References
Source

Patent Number
D321,241
Date Filed
Thursday, June 16, 1988
36 years ago
Date Issued
Tuesday, October 29, 1991
33 years ago

Inventors
- Gary D. Ingle
Original Assignees
- General Pump/U.S., Inc.
Examiners
- Largen; James R.
Agents
- Merchant, Gould, Smith, Edell, Welter & Schmidt

US Classifications
- D23 - Environmental heating and cooling
Field of Search
- US
- D23 233
- D23 235
- D23 247
- D23 244-249
- D23 269
- 137 72
- 137 74
- 137 4544
- 137 4542
- Term of Grant
  14Years

Information

Abstract

Description

Claims

The ornamental design for a combined pressure and thermal safety valve, as shown and described.

US Referenced Citations (14)

Number	Name	Date	Kind
D96691	Nelson	Aug 1935
D226431	Emburg, Jr.	Mar 1973
D233569	Miller	Nov 1974
D237360	Watts	Aug 1974
D242709	Schourup	Dec 1976
D242710	Schourup	Dec 1976
D260280	Compbell	Aug 1981
1557250	Grandfield	Oct 1925
2036391	Bradley	Apr 1936
2722232	Roche, Sr.	Nov 1955
3139103	Bottum	Jun 1964
3368581	Glover, Jr.	Feb 1968
3490473	Ehrens et al.	Jan 1970
3556470	Ehrens et al.	Jan 1971

Non-Patent Literature Citations (1)

Entry
A sales brochure of Hydro Systems Company, 3798 Round Bottom Road, Cincinnati, Ohio, 45244, Description: A pressure relief valve characterized by the "Pump Guard.RTM." trademark, printed in 1984.