US3761017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature sensitive pressure regulator
Assignee: Nissan Motor Co Ltd
•
Filing: 1971-04-20
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Granted: 1973-09-25
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Expires: 1991-04-20
Abstract
Abstract A temperature sensitive pressure regulator adapted to provide a temperature dependent pressure without being affected by variations in a source pressure. The pressure regulator comprises an airtight housing divided by a bimetallic partition into a first chamber and a second chamber. The first chamber is held at atmospheric pressure through an air vent. Instead of the first chamber only a support for an adjustment device may be used. A coiled spring is provided for urging the partition wall toward the second chamber. A conduit leading from a pressure source opens to the second chamber at a suitable spacing from the partition wall with the port of the conduit facing the partition wall. Another conduit is provided for communicating the second chamber with a pressure controlled device. Means are provided for selectively introducing atmospheric air into the second chamber. The bimetallic partition wall is responsive to the pressure difference between the first and second chambers as well as the surrounding temperature to be movable toward the facing port of the conduit tending to close it.
Inventors
- 👤 Y Mohri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:42
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/185
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
159 words
A temperature sensitive pressure regulator comprising, a temperature responsive bimetallic partition provided within an airtight housing dividing the interior thereof into a first chamber and a second chamber, an air vent for providing communication between said first chamber and the atmosphere, a first conduit leading from a pressure source and having its outlet port opening to said second chamber in a position suitably spaced from said partition with said port facing said partition, a second conduit connecting said second chamber with a pressure controlled device, flow restricting means for bleeding continuously atmospheric air into said second chamber, said bimetallic partition being also responsive to a pressure difference between said first chamber and said second chamber as well as the surrounding temperature to be distended toward said outlet port of said first conduit to close it, whereby a temperature dependent pressure is supplied to the pressure controlled device without being affected by variations in the pressure of said pressure source.
Claim 2
Dependent Claim
159 words
A temperature sensitive pressure regulator comprising, a temperature responsive bimetallic partition provided within an airtight housing dividing the interior thereof into a first chamber and a second chamber, an air vent for providing communication between said first chamber and the atmosphere, a first conduit leading from a pressure source and having its outlet port opening to said second chamber in a position suitably spaced from said partition with said port facing said partition, a second conduit connecting said second chamber with a pressure controlled device, flow restricting means for bleeding continuously atmospheric air into said second chamber, said bimetallic partition being also responsive to a pressure difference between said first chamber and said second chamber as well as the surrounding temperature to be distended toward said outlet port of said first conduit to close it, whereby a temperature dependent pressure is supplied to the pressure controlled device without being affected by variations in the pressure of said pressure source.
Claim 3
Dependent Claim
51 words
A temperature sensitive pressure regulator according to claim 1, in which said flow restricting means for bleeding continuously atmospheric air into said second chamber comprises a casing forming an air chamber, a constriction provided between said air chamber and said second chamber, and a air filter mounted within said air chamber.
Claim 4
Dependent Claim
36 words
A temperature sensitive pressure regulator according to claim 1, further comprising a spring for urging said bimetallic partition toward said second chamber to balance the force of said bimetallic partition with the force of said spring.
Claim 5
Dependent Claim
46 words
A temperature sensitive pressure regulator according to claim 3, in which the force of compression of said spring is adapted to be adjustable by an adjustment screw having said spring carried thereon by means of a spring support, said adjustment screw being mounted within a bore.
Claim 6
Dependent Claim
30 words
A temperature sensitive pressure regulator according to claim 4, in which said adjustment device is of screw type, said has a polygonally sectioned end for fixedly mounting a knob thereon.
Claim 7
Dependent Claim
48 words
A temperature sensitive pressure regulator according to claim 1, in which said pressure source comprises the intake manifold of an internal combustion engine of a vehicle and said pressure controlled device comprises a diaphragm device adapted to control the opening of a damper of an automotive heating apparatus.
Claim 8
Dependent Claim
90 words
A temperature sensitive pressure regulator according to claim 6, wherein said diaphragm device comprises a diaphragm dividing a housing into a negative pressure chamber and an atmospheric chamber, a spring mounted in the negative pressure chamber to oppose the action of negative pressure introduced into said negative prEssure chamber and a slidable damper operating rod secured at one end to said diaphragm, the other end of said rod being connected to said damper to change the position of said damper in dependence on the pressure in the negative pressure chamber.
Claim 9
Dependent Claim
38 words
A temperature sensitive pressure regulator according to claim 1, wherein said first chamber is reduced to a support for said adjustment device of said screw, whereby said bimetallic member responds rapidly to temperature variations of said ambient matter.
Claim 10
Dependent Claim
19 words
A temperature sensitive pressure regulator according to claim 1, wherein said pressure source is a source of pressurized fluid.
References Cited (Backward Citations)
US1558081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |