US4777929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting for duty cycle control switch for ceiling mounted ductless heater
Assignee: TEMPER SENSOR MANUFACTURING Inc
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Filing: 1987-02-10
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Granted: 1988-10-18
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Expires: 2007-02-10
Abstract
Abstract A temperature sensitive duty cycling control switch is mounted to a forced air ductless gas or oil heater by a special mounting bracket. The bracket attaches to the front of the heater in the path of the heated airflow. The mounting device is basically a tapered conduit or duct which is held at a distance from the heater so that it does not unduly obstruct the airflow and is tapered to concentrate air generated by the heater onto a plate mounted in front of the duct. The duty cycling control switch is then mounted to this plate and responds to the temperature of the plate. This enables the cycling of the heater burner while the fan continues to operate.
Inventors
- 👤 Dean Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:50
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/20; F24H9/2064; F24H9/2085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A ceiling mounted heat exchanger having a blower means to blow air through said heat exchanger and through an outlet; a bracket mounted forwardly of said outlet, said bracket including a tapered conduit, said conduit having an inlet end and an outlet end and mounted to said heater with said inlet end positioned with respect to said outlet from said heat exchange to receive air blown by said blower through said outlet; means to mount a temperature sensitive switch forwardly of said tapered conduit whereby air passing through said tapered conduit and through the outlet of said conduit contacts said temperature sensitive switch.
Claim 2
Dependent Claim
103 words
A ceiling mounted heat exchanger having a blower means to blow air through said heat exchanger and through an outlet; a bracket mounted forwardly of said outlet, said bracket including a tapered conduit, said conduit having an inlet end and an outlet end and mounted to said heater with said inlet end positioned with respect to said outlet from said heat exchange to receive air blown by said blower through said outlet; means to mount a temperature sensitive switch forwardly of said tapered conduit whereby air passing through said tapered conduit and through the outlet of said conduit contacts said temperature sensitive switch.
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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) | 1991-10-18 | 1992-04-18 | 1992-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-18 | 1996-04-18 | 1996-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-18 | 2000-04-18 | 2000-10-18 | $7700.00 | Window Closed / Lapsed |