US3625328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual-response drive train
Assignee: Philips Home Products Inc
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Filing: 1969-12-18
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Granted: 1971-12-07
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Expires: 1989-12-18
Abstract
Abstract A planetary drive train is disclosed having a first input from an electric motor and a first output which is connected to drive a load. A second output from the drive train is partially rotatable and is connected to actuate a control switch whenever the torque requirements of the load exceed a first predetermined limit established by an adjustable screw and a yieldable spring. When this predetermined limit is exceeded the spring is stressed to permit partial rotation of the planetary drive second output and this actuates the switch to deenergize the motor. Additionally, the planetary drive first output driving the load is connected so that movement of the load between first and second limits actuates the switch to deenergize the motor. The load may be a garage door moved between upward and downward limit positions, and the drive train second output may be a limiting torque condition to deenergize the drive motor whenever the garage door exceeds first and second predetermined force requirements in moving in the upward and downward directions. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.
Inventors
- 👤 Alvin J Carli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:28
CPC Classifications
G; G05; G05G; G05G15/00; G05G15/08
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
163 words
A drive mechanism for a load, comprising in combination, a frame, an electric motor, a planetary drive train having an input connected to said motor and having a first output connectable to a load, a second output of said planetary drive train at least partially rotatable relative to said frame, means mounting said motor and drive train on said frame, yieldable means urging said second output of said planetary device train to a position and establishing a first predetermined limit of load force for load movement, control means for the load, first means connecting said control means for actuation by movement of said first output of said planetary drive train, second means connecting said control means for actuation by movement of said second output of said planetary drive train to actuate said control means upon load force requirements exceeding said first predetermined limit, and said control means including a single switch actuated by both the first and second outputs of said drive train.
Claim 2
Dependent Claim
163 words
A drive mechanism for a load, comprising in combination, a frame, an electric motor, a planetary drive train having an input connected to said motor and having a first output connectable to a load, a second output of said planetary drive train at least partially rotatable relative to said frame, means mounting said motor and drive train on said frame, yieldable means urging said second output of said planetary device train to a position and establishing a first predetermined limit of load force for load movement, control means for the load, first means connecting said control means for actuation by movement of said first output of said planetary drive train, second means connecting said control means for actuation by movement of said second output of said planetary drive train to actuate said control means upon load force requirements exceeding said first predetermined limit, and said control means including a single switch actuated by both the first and second outputs of said drive train.
Claim 3
Dependent Claim
36 words
A drive mechanism as set forth in claim 1, wherein said control means includes a single switch actuated by bidirectional movements of said drive train first output and by movements of said drive train second output.
Claim 4
Dependent Claim
36 words
A drive mechanism as set forth in claim 1, wherein said control means includes a single switch actuated by bidirectional movements of said drive train second output and by movements of said drive train first output.
Claim 5
Dependent Claim
32 words
A drive mechanism as set forth in claim 1, wherein said control means includes a single switch actuated by bidirectional movements of each said first and second outputs of said drive train.
Claim 6
Dependent Claim
16 words
A drive mechanism as set forth in claim 1, wherein said load is a garage door.
Claim 7
Dependent Claim
27 words
A drive mechanism as set forth in claim 1, wherein said yieldable means includes spring means, and adjustable means to adjust the stress in said spring means.
Claim 8
Dependent Claim
46 words
A drive mechanism as set forth in claim 1, wherein said yieldable means includes said first and second spring means, first and second adjustment means adjusting the stress in said first and second spring means to urge said drive train second output into an intermediate position.
Claim 9
Dependent Claim
50 words
A drive mechanism as set forth in claim 1, including said first output means being responsive to movement of the load to actuate said switch, and said second output means being responsive to an increase in movement of said second output relative to said first output to actuate said switch.
Claim 10
Dependent Claim
94 words
A drive mechanism as set forth in claim 1, including means mounting said switch on said frame, a flexible chain as part of said drive train first output, a pivoted lever arranged to actuate said switch closed by movement of said pivoted lever, a lug on said chain arranged to coact with said pivoted lever to actuate same to close said switch, a reaction plate as part of said drive train second input, and an insulator actuator carried by said reaction plate and arranged to actuate said switch upon movement of said insulator actuator.
Claim 11
Dependent Claim
19 words
A drive mechanism as set forth in claim 9, including means to pivot said lever on said reaction plate.
Claim 12
Dependent Claim
37 words
A drive mechanism as set forth in claim 1, wherein said yieldable means includes a compression spring and an adjustable screw, and means establishing said adjustable screw acting between said frame and said drive train second output.
Claim 13
Dependent Claim
35 words
A drive mechanism as set forth in claim 1, wherein said yieldable means includes a spring, an adjustment bolt, a nut threaded on said bolt, and said spring acting between said nut and said frame.
Claim 14
Dependent Claim
33 words
A drive mechanism as set forth in claim 12, wherein said spring is a compression spring surrounding said adjustment bolt, and said bolt acts between said frame and said drive train second output.
Claim 15
Dependent Claim
41 words
A drive mechanism as set forth in claim 12, wherein said adjustment bolt is rotatable for adjustment of the stress on said spring without axial movement of said bolt relative to said frame or relative to said drive train second output.
Claim 16
Dependent Claim
45 words
A drive mechanism as set forth in claim 1, wherein said planetary drive train includes a sun gear, a ring gear and planet gear, one of said gears being said second output, and a reaction plate carrying said secondary output of said planetary gear train.
Claim 17
Dependent Claim
52 words
A drive mechanism as set forth in claim 15, wherein said sun gear is the input of said planetary gear train, said planet gears are the first output of said gear train, and said ring gear is the second output of said planetary gear train which is carried on said reaction plate.
Claim 18
Dependent Claim
33 words
A drive mechanism as set forth in claim 16, including a spider journaled on said frame, and means journaling said planet gears on said spider for cooperation with said sun and ring gears.
Claim 19
Dependent Claim
168 words
A drive mechanism for a reversible load, comprising in combination, a frame, an electric motor, a planetary drive train having an input connected to said motor and having a reversible first output connectable to move a load in a first and a second direction, a second output of said planetary drive train at least partially rotatable relative to said frame, means mounting said motor and drive train on said frame, first and second yieldable means urging said second output of said planetary drive train to an intermediate position and establishing first and second predetermined limits of load force for load movement respectively, control means for the load, first means connecting said control means for actuation by movement of said first output of said planetary drive train, and second means connecting said control means for actuation by first and second directions of movement of said second output of said planetary drive train to actuate said control means upon load force requirements exceeding said first and second predetermined limits, respectively.
Claim 20
Dependent Claim
168 words
A drive mechanism for a reversible load, comprising in combination, a frame, an electric motor, a planetary drive train having an input connected to said motor and having a reversible first output connectable to move a load in a first and a second direction, a second output of said planetary drive train at least partially rotatable relative to said frame, means mounting said motor and drive train on said frame, first and second yieldable means urging said second output of said planetary drive train to an intermediate position and establishing first and second predetermined limits of load force for load movement respectively, control means for the load, first means connecting said control means for actuation by movement of said first output of said planetary drive train, and second means connecting said control means for actuation by first and second directions of movement of said second output of said planetary drive train to actuate said control means upon load force requirements exceeding said first and second predetermined limits, respectively.
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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) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |