US3777974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damper control mechanism
Assignee: Individual
•
Filing: 1972-04-17
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Granted: 1973-12-11
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Expires: 1992-04-17
Abstract
Abstract A damper control mechanism for a damper which is pivotally mounted in a duct by a shaft comprising a gear sector fixed to the shaft and an electric motor pivotally suspended from said shaft and having a gear meshed with said gear sector. The electric motor comprising a low-voltage type and the battery for operating the same is suspended in the same manner as the motor. The mechanism can be mounted within or externally of the duct.
Inventors
- 👤 A Sparks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:16
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K31/00; F16K31/02; F16K31/04; F16K31/041; F16K31/043; F16K31/44; F16K31/53; F16K31/54; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F24F13/14; F24F13/1426; F24F2013/1433; F24F2013/1446; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/1967
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
102 words
In a damper control mechanism, the combination comprising a damper, means for mounting said damper within a duct for movement between predetermined positions, a gear sector connected to said damper for movement therewith as the damper is moved in said duct, a motor, a gear driven by said motor, means for suspending said motor with said gear thereon with the gear in mesh with said gear sector, said means for mounting said damper comprising a rotatable shaft on which the damper is fixed, said means supporting said motor comprising a member mounted for pivotal and radial movement with respect to said shaft.
Claim 2
Dependent Claim
102 words
In a damper control mechanism, the combination comprising a damper, means for mounting said damper within a duct for movement between predetermined positions, a gear sector connected to said damper for movement therewith as the damper is moved in said duct, a motor, a gear driven by said motor, means for suspending said motor with said gear thereon with the gear in mesh with said gear sector, said means for mounting said damper comprising a rotatable shaft on which the damper is fixed, said means supporting said motor comprising a member mounted for pivotal and radial movement with respect to said shaft.
Claim 3
Dependent Claim
142 words
In a damper control mechanism, the combination comprising a damper, means for mounting said damper within a duct for movement between predetermined positions, a gear sector connected to said damper for movement therewith as the damper is moved in said duct, a motor, a gear driven by said motor, means for suspending said motor with said gear thereon with the gear in mesh with said gear sector, a thermostat associated with said motor and circuitry connecting said thermostat with said motor to control the operation of said motor whereby when said thermostat indicates that the damper should be moved, said motor is eneRgized causing the gear sector to be moved and, in turn, move said damper to another position, a position responsive switch operable to de-energize the motor when the damper is moved to one or the other of its predetermined positions.
Claim 4
Dependent Claim
142 words
In a damper control mechanism, the combination comprising a damper, means for mounting said damper within a duct for movement between predetermined positions, a gear sector connected to said damper for movement therewith as the damper is moved in said duct, a motor, a gear driven by said motor, means for suspending said motor with said gear thereon with the gear in mesh with said gear sector, a thermostat associated with said motor and circuitry connecting said thermostat with said motor to control the operation of said motor whereby when said thermostat indicates that the damper should be moved, said motor is eneRgized causing the gear sector to be moved and, in turn, move said damper to another position, a position responsive switch operable to de-energize the motor when the damper is moved to one or the other of its predetermined positions.
Claim 5
Dependent Claim
85 words
In a damper control mechanism, the combination comprising a damper, means for mounting said damper within a duct for movement between predetermined positions, a gear sector connected to said damper for movement therewith as the damper is moved in said duct, a motor, a gear driven by said motor, means for suspending said motor with said gear thereon with the gear in mesh with said gear sector, said gear sector and said means for supporting said motor and said motor being suspended in said duct.
Claim 6
Dependent Claim
85 words
In a damper control mechanism, the combination comprising a damper, means for mounting said damper within a duct for movement between predetermined positions, a gear sector connected to said damper for movement therewith as the damper is moved in said duct, a motor, a gear driven by said motor, means for suspending said motor with said gear thereon with the gear in mesh with said gear sector, said gear sector and said means for supporting said motor and said motor being suspended in said duct.
Claim 7
Dependent Claim
80 words
In a dmaper control mechanism, the combination comprising a damper, means for mounting said damper within a duct for movement between predetermined positions, an internal gear sector connected to said damper for movement therewith as the damper is moved in said duct, a motor, a gear driven by said motor, means for suspending said motor for pivotal and radial movement with respect to said gear sector and with said gear thereon with the gear in mesh with said gear sector.
Claim 8
Dependent Claim
80 words
In a dmaper control mechanism, the combination comprising a damper, means for mounting said damper within a duct for movement between predetermined positions, an internal gear sector connected to said damper for movement therewith as the damper is moved in said duct, a motor, a gear driven by said motor, means for suspending said motor for pivotal and radial movement with respect to said gear sector and with said gear thereon with the gear in mesh with said gear sector.
Claim 9
Dependent Claim
33 words
The combination set forth in claim 1 wherein said gear sector has an internal gear and said gear driven by said motor is maintained in meshing relationship therewith by the action of gravity.
Claim 10
Dependent Claim
34 words
The combination set forth in claim 1 wherein said motor comprises a reversible direct current motor and is of a low voltage type including a battery supported by said means for supporting said motor.
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) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |