Patent US3719005A successfully refreshed from Google Patents.
US3719005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door operator reversing control
Assignee: Philips Home Products Inc
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Filing: 1972-01-13
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Granted: 1973-03-06
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Expires: 1992-01-13
Abstract
Abstract A garage door motor driven operator is disclosed which is capable of opening or closing the garage door and capable of automatically reversing the direction of movement of the door when it is moving in the closing direction should the door strike an obstruction which slows or stops the door. A load switch is sensitive to a slow-down of the door such as when an overload condition slows the door. This load switch gives a first impulse to control the motor energization circuit to stop the door. A torque switch is urged in a first direction by gravity acting on a weight and is urged in the opposite direction by a one-way clutch acting only in the closing direction of the door. Hence when the door is stopped there is no more torque through the oneway clutch and the gravity actuated weight actuates the torque switch to give a second impulse to again energize the door to establish a door opening movement. 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
- 👤 A Carli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:53
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/40; E05F15/41; E05Y; E05Y2400/00; E05Y2400/10; E05Y2400/52; E05Y2400/53; E05Y2400/54; E05Y2400/55; E05Y2400/552; E05Y2900/00; E05Y2900/10; E05Y2900/106; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568; Y10T74/18576; Y10T74/18688
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
218 words
A door operator control mechanism, comprising in combination, an electric motor, linkage means connecting said motor to a door to move the door between opened and closed positions, connection means to energize said motor, a load switch actuated by a change in load of the door and connected to said energization means, torque switch means connected to said energization means and including a first and a second relatively movable switch member having a first switch therebetween, means providing first and second positions of said first switch member relative to said second switch member, means relatively urging said switch members from said second to said first position, torque means responsive to the closing direction of the door and acting on one of said switch members to overcome said urging means to relatively urge said switch members from said first toward said second position, said load switch acting to provide a first signal to said motor energization means for a door stopping condition upon the door in a closing direction encountering an overload and actuating said load switch, and said first switch being actuated by said urging means intermediate said second and first positions to give a second signal to the motor energization means to establish a door opening condition subsequent to the door stopping condition by the first signal.
Claim 2
Dependent Claim
218 words
A door operator control mechanism, comprising in combination, an electric motor, linkage means connecting said motor to a door to move the door between opened and closed positions, connection means to energize said motor, a load switch actuated by a change in load of the door and connected to said energization means, torque switch means connected to said energization means and including a first and a second relatively movable switch member having a first switch therebetween, means providing first and second positions of said first switch member relative to said second switch member, means relatively urging said switch members from said second to said first position, torque means responsive to the closing direction of the door and acting on one of said switch members to overcome said urging means to relatively urge said switch members from said first toward said second position, said load switch acting to provide a first signal to said motor energization means for a door stopping condition upon the door in a closing direction encountering an overload and actuating said load switch, and said first switch being actuated by said urging means intermediate said second and first positions to give a second signal to the motor energization means to establish a door opening condition subsequent to the door stopping condition by the first signal.
Claim 3
Dependent Claim
218 words
A door operator control mechanism, comprising in combination, an electric motor, linkage means connecting said motor to a door to move the door between opened and closed positions, connection means to energize said motor, a load switch actuated by a change in load of the door and connected to said energization means, torque switch means connected to said energization means and including a first and a second relatively movable switch member having a first switch therebetween, means providing first and second positions of said first switch member relative to said second switch member, means relatively urging said switch members from said second to said first position, torque means responsive to the closing direction of the door and acting on one of said switch members to overcome said urging means to relatively urge said switch members from said first toward said second position, said load switch acting to provide a first signal to said motor energization means for a door stopping condition upon the door in a closing direction encountering an overload and actuating said load switch, and said first switch being actuated by said urging means intermediate said second and first positions to give a second signal to the motor energization means to establish a door opening condition subsequent to the door stopping condition by the first signal.
Claim 4
Dependent Claim
218 words
A door operator control mechanism, comprising in combination, an electric motor, linkage means connecting said motor to a door to move the door between opened and closed positions, connection means to energize said motor, a load switch actuated by a change in load of the door and connected to said energization means, torque switch means connected to said energization means and including a first and a second relatively movable switch member having a first switch therebetween, means providing first and second positions of said first switch member relative to said second switch member, means relatively urging said switch members from said second to said first position, torque means responsive to the closing direction of the door and acting on one of said switch members to overcome said urging means to relatively urge said switch members from said first toward said second position, said load switch acting to provide a first signal to said motor energization means for a door stopping condition upon the door in a closing direction encountering an overload and actuating said load switch, and said first switch being actuated by said urging means intermediate said second and first positions to give a second signal to the motor energization means to establish a door opening condition subsequent to the door stopping condition by the first signal.
Claim 5
Dependent Claim
32 words
A door operator control mechanism as set forth in claim 1, wherein said load switch is connected to be responsive to the speed of movement of the door load on said motor.
Claim 6
Dependent Claim
55 words
A door operator control mechanism as set forth in claim 1, wherein said torque switch means includes a one-way clutch connected to be responsive to torque in the closing direction of movement of the door to act on said torque switch means and non-responsive to torque in the opening direction of movement of the door.
Claim 7
Dependent Claim
51 words
A door operator control mechanism as set forth in claim 1, wherein said linkage means includes a hub rotatable about an axis in accordance with door movement, a torque weight, and means eccentrically mounting said torque weight relative to said hub to establish one-way rotational drive of said torque switch means.
Claim 8
Dependent Claim
149 words
A door operator control mechanism as set forth in claim 1, wherein said linkage means includes a hub rotatable about an axis in accordance with movement of the door, an eccentric aperture in the hub relative to a radius from said hub, a torque weight loosely but positively fastened to said hub at said eccentric aperture for movement between first and second arcuate positions relative to said hub dependent upon opening and closing directions of movement, respectively, of the door, a drive disc coaxial with said hub and connected to actuate said torque switch means, and said second arcuate position of said torque weight establishing a portion thereof at a greater radial distance from said hub axis than with the weight in said first arcuate position due to the eccentricity of said aperture in said hub to thus frictionally drive said drive disc in the door closing direction only.
Claim 9
Dependent Claim
32 words
A door operator control mechanism as set forth in claim 5, wherein said first switch member is stationary, and means connecting said second switch member to be moved by said drive disc.
Claim 10
Dependent Claim
95 words
A door operator control mechanism as set forth in claim 1, wherein said linkage means includes a hub rotatable about an axis in accordance with door movement, said load switch includes a centrifugal weight slidably journalled to move along a radius relative to the axis of said hub, and spring means acting on said centrifugal weight to urge said weight inwardly toward said axis in the absence of door movement and with door movement in either the opening or closing direction the centrifugal force on said centrifugal weight overcoming the force of said spring means.
Claim 11
Dependent Claim
35 words
A door operator control mechanism as set forth in claim 1, including a friction clutch in said linkage means, and means connecting said torque switch means on the door load side of said friction clutch.
Claim 12
Dependent Claim
34 words
A door operator control mechanism as set forth in claim 1, including a friction clutch in said linkage means, and means connecting said load switch on the door load side of said friction clutch.
Claim 13
Dependent Claim
33 words
A door operator control mechanism as set forth in claim 1, including arelay in said motor energization means, and means connecting said torque switch means and said load switch to energize said relay.
Claim 14
Dependent Claim
34 words
A door operator control mechanism as set forth in claim 10, wherein said relay is an intermittently actuated relay, and means connecting said torque switch means and said load switch to impulse said relay.
Claim 15
Dependent Claim
83 words
A door operator control mechanism as set forth in claim 1, including a down limit switch connected to said motor energization means and actuable by the closed condition of the door, a second switch in said torque switch means, and means connecting said second switch to be normally closed in said second position of said torque switch means to avoid a second signal to said motor energization means upon said down limit switch being actuated closed at the end of door closing travel.
Claim 16
Dependent Claim
37 words
A door operator control mechanism as set forth in claim 12, including said second switch being constructed to remain closed for a majority of movement from said second to said first position of said torque switch means.
Claim 17
Dependent Claim
23 words
A door operator control mechanism as set forth in claim 1, wherein said motor is reversible to reverse the direction of door movement.
Claim 18
Dependent Claim
20 words
A door operator control mechanism as set forth in claim 1, including disabling means connected to disable said first switch.
Claim 19
Dependent Claim
38 words
A door operator control mechanism as set forth in claim 15, wherein said disabling means includes a second switch as a part of said torque switch means, and means connecting said second switch to said motor energization means.
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) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |