US3682380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature control in fluid systems
Assignee: Individual
•
Filing: 1970-09-10
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Granted: 1972-08-08
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Expires: 1990-09-10
Abstract
Abstract The invention provides a valve comprising a body having a central bore embodying a reduced-diameter seating, a pair of inlet ports and a pair of outlet ports connecting to the central bore for admission of fluid to and from the bore, thermosensitive means disposed in the bore in the path of fluid flow and having associated therewith a spring-loaded valve member displaceable under the influence of the thermosensitive means, between a first position (with a pair of inlet ports in communication with the bore and at least one of the outlet ports) and a second position (cooperating with the seating to divide the bore into two chambers with each of the inlet ports of the pair communicating through a respective one of the chambers with a respective one of the outlet ports).
Inventors
- 👤 Ahmad Aziz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:54
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/14; F01P7/16
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
190 words
A hydraulic valve for controlling the temperature of a fluid in a circuit comprising; a valve body having a central bore: a reduced-diameter seating at a location between the ends of the central bore; a pair of connecting inlet ports for the admission of fluid to the central bore connecting with the central bore one to each side of the seating; a pair of connecting outlet ports for the admission of fluid from the central bore connecting with the central bore one to each side of the seating; a thermosensitive means located in the central bore in the path of fluid flow therethrough; a spring-loaded sleeve valve member disposed in the central bore and displaceable by the thermosensitive means in a sliding fit between a first position clear of the seating and permitting communication of the pair of inlet ports with the central bore and at least one of the outlet ports, and a second position cooperating with the seating and dividing the central bore into two chambers with each of the inlet ports communicating through a respective one of the chambers with a respective one of the outlet ports.
Claim 2
Dependent Claim
190 words
A hydraulic valve for controlling the temperature of a fluid in a circuit comprising; a valve body having a central bore: a reduced-diameter seating at a location between the ends of the central bore; a pair of connecting inlet ports for the admission of fluid to the central bore connecting with the central bore one to each side of the seating; a pair of connecting outlet ports for the admission of fluid from the central bore connecting with the central bore one to each side of the seating; a thermosensitive means located in the central bore in the path of fluid flow therethrough; a spring-loaded sleeve valve member disposed in the central bore and displaceable by the thermosensitive means in a sliding fit between a first position clear of the seating and permitting communication of the pair of inlet ports with the central bore and at least one of the outlet ports, and a second position cooperating with the seating and dividing the central bore into two chambers with each of the inlet ports communicating through a respective one of the chambers with a respective one of the outlet ports.
Claim 3
Dependent Claim
31 words
A valve as set forth in claim 1, the thermosensitive means comprising a wax capsule including a plunger extending from a housing when the capsule is subjected to an elevated temperature.
Claim 4
Dependent Claim
39 words
A valve as set forth in claim 2 the valve member being in the form of a sleeve surrounding the capsule and slidably locating in a reduced diameter portion of the bore, the reduced diameter portion providing the seating.
Claim 5
Dependent Claim
27 words
A valve as set forth in claim 3, the sleeve carrying a circumferential sealing ring engageable with the seating in the second position of the valve member.
Claim 6
Dependent Claim
35 words
A valve as set forth in claim 2, the housing of the capsule constituting the valve member and the reduced diameter seating being provided by a sealing ring located against a shoulder in the bore.
Claim 7
Dependent Claim
25 words
A valve as set forth in claim 5, the capsule being loaded by a spring serving also to hold the scalinG ring against the shoulder.
Claim 8
Dependent Claim
27 words
A valve as set forth in claim 6, the sealing ring, when engaged by the valve member, being capable of deforming to permit release of excess pressure.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |