US3901438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostat-regulated radiator valve for single or double conduit central heating systems
Assignee: Individual
•
Filing: 1974-02-19
•
Granted: 1975-08-26
•
Expires: 1994-02-19
Abstract
Abstract A thermostat-regulated radiator valve for a single or double conduit central heating system comprising a generally T-shaped valve housing including one pass-through conduit and one perpendicularly branched-off conduit. The valve housing is mounted underneath a radiator with one end of the pass-through conduit in fluid communication with the radiator. An annular washer is coaxially mounted in the pass-through conduit at the junction between the pass-through conduit and the branched-off conduit and is substantially aligned with the axis of the branched-off conduit. A flexible hose or tube is sealingly mounted in the opening of the washer and extends through the part of the pass-through conduit attached to the radiator. A U-shaped bimetal element is mounted in the valve housing and has its legs extending on each side of the flexible tube so as to press around the tube at increasing temperature and thereby diminish the flow through the radiator.
Inventors
- 👤 Fingal Christiansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:49
CPC Classifications
F; F24; F24D; F24D19/00; F24D19/0002; F24D19/0004; F24D19/0007; F24D19/0009; F24D19/0014; F24F; F24F11/00; F24F11/70; F24F11/80; F24F11/83; F24F11/84; G; G05; G05D; G05D23/00; G05D23/01; G05D23/02; G05D23/024; G05D23/08; G05D23/13; G05D23/1306; G05D23/132
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
84 words
A thermostat regulated radiator valve for central heating systems comprising: bi-metal means mounted within a conduit conducting fluid from a radiator for controlling fluid flow through the radiator in dependence on the temperature of the outgoing flow from the radiator, a resilient pliable tube means in said conduit capable of conducting the whole flow from the radiator, said bi-metal means being of U-shape and with the legs thereof pinching said tube means between their ends to a variable degree to regulate fluid flow therethrough.
Claim 2
Dependent Claim
84 words
A thermostat regulated radiator valve for central heating systems comprising: bi-metal means mounted within a conduit conducting fluid from a radiator for controlling fluid flow through the radiator in dependence on the temperature of the outgoing flow from the radiator, a resilient pliable tube means in said conduit capable of conducting the whole flow from the radiator, said bi-metal means being of U-shape and with the legs thereof pinching said tube means between their ends to a variable degree to regulate fluid flow therethrough.
Claim 3
Dependent Claim
31 words
The valve as claimed in claim 1, wherein a middle position joining the legs of the bi-metal means is formed with an opening for the passage of the resilient tube means.
Claim 4
Dependent Claim
28 words
The valve as claimed in claim 2, wherein said opening has such a diameter that there is clearance between the tube means and the rim of said opening.
Claim 5
Dependent Claim
85 words
The valve as claimed in claim 2 comprising a valve housing, wherein said middle portion of the bi-metal means surrounds said tube means close to one of its ends, said one end tightly fitting within the central hole of a washer mounted in said valve housing, said middle portion of the bi-metal means abutting said washer and the said tube means extending away from the washer between the legs of the bi-metal means and past their extreme ends, said ends preferably being slightly inwardly bent.
Claim 6
Dependent Claim
69 words
The valve as claimed in claim 4, wherein the legs of the bi-metal means have aligned lateral projections, one projection engaging a wall of the valve housing and the other projection engaging, said screw engaging a threaded hole through the wall of the valve housing aligned with said other projection, said adjusting screw being capable on actuation to preset the relative position of the legs of the bi-metal means.
Claim 7
Dependent Claim
20 words
The valve as claimed in claim 4, wherein the resilient tube means and the bi-metal means extend into the radiator.
Claim 8
Dependent Claim
98 words
A thermostat-regulated radiator valve for central heating systems comprising: temperature-responsive means mounted within a conduit conducting fluid from a radiator for controlling fluid flow through the radiator in dependence on the temperature of the outgoing flow from the radiator, a resilient pliable tube means in said conduit for conducting fluid from the radiator, said responsive means being effective in response to the temperature of the fluid in the conduit to pinch the tube means and thereby vary its fluid-carrying capacity and thereby control the fluid flow according to the temperature of the return fluid flow in the conduit.
Claim 9
Dependent Claim
98 words
A thermostat-regulated radiator valve for central heating systems comprising: temperature-responsive means mounted within a conduit conducting fluid from a radiator for controlling fluid flow through the radiator in dependence on the temperature of the outgoing flow from the radiator, a resilient pliable tube means in said conduit for conducting fluid from the radiator, said responsive means being effective in response to the temperature of the fluid in the conduit to pinch the tube means and thereby vary its fluid-carrying capacity and thereby control the fluid flow according to the temperature of the return fluid flow in the conduit.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |