US3611099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powered window regulator
Assignee: Toyota Motor Corp
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Filing: 1969-12-08
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Granted: 1971-10-05
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Expires: 1989-12-08
Abstract
Abstract Powered window regulator comprises motor assembly having window raising and window-lowering circuits for raising and lowering window glass. Start switch for motor has contact for connecting window-raising circuit with motor and second contact for connecting window-lowering circuit with motor. Overload detection switch associated with motor closes when load on motor exceeds predetermined normal value. Motor field control relay is activated when overload detection switch is closed to thereby break window-raising circuit and close window-lowering circuit. Delay relay circuit maintains motor field control relay activated predetermined time after overload detection switch opens whereby window glass continues to lower. Safety circuit cancel switch enables raising of window glass regardless of load on motor.
Inventors
- 👤 Toshinobu Kuroyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:51
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/08; H02H7/085; H02H7/0851; E; E05; E05F; E05F15/00; E05F15/40; E05F15/41; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/53; E05Y2900/55
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
345 words
A powered window regulator comprising a motor assembly including window raising and window lowering circuits for raising and lowering a window glass, a start switch for the motor having a contact for connecting the window-raising circuit with the motor and a contact for connecting the window-lowering circuit with the motor, an overload detection switch associated with the motor constructed and arranged to close when the load on the motor exceeds a predetermined normal value, a motor field control relay activated when the overload detection switch is closed for breaking the window raising circuit and closing the windowlowering circuit of the motor assembly, a delay relay circuit associated with the motor field control relay for maintaining the motor field control relay activated a predetermined time after the overload detection switch opens, and a manually operable safety circuit cancelling switch for deactivating the motor field control relay whereby the window glass may be elevated to its closed position by the motor assembly regardless of the load on the motor, the relay control circuit for maintaining the motor field control relay activated including an electrical condenser adapted to be discharged when the overload detection switch is closed and charged when the overload detection switch is open, the relay control circuit maintaining the motor field control relay activated except when the electrical condenser is fully charged or the safety circuit switch is opened, and the motor field control relay being activated while both the overload detection switch and the safety circuit cancel switch are closed, the condenser being connected to the base of a transistor with the emitter of the transistor connected to a power source and its collector connected via a relay coil to a ground whereby the transistor may become continuous by the charge current and discharge current of the condenser, two relay contacts that close when the relay coil is energized, one of the two relay contacts being connected to the motor field control relay and the other of the contacts being connected via the contact for raising to the self-holding circuit of the relay coil.
Claim 2
Dependent Claim
345 words
A powered window regulator comprising a motor assembly including window raising and window lowering circuits for raising and lowering a window glass, a start switch for the motor having a contact for connecting the window-raising circuit with the motor and a contact for connecting the window-lowering circuit with the motor, an overload detection switch associated with the motor constructed and arranged to close when the load on the motor exceeds a predetermined normal value, a motor field control relay activated when the overload detection switch is closed for breaking the window raising circuit and closing the windowlowering circuit of the motor assembly, a delay relay circuit associated with the motor field control relay for maintaining the motor field control relay activated a predetermined time after the overload detection switch opens, and a manually operable safety circuit cancelling switch for deactivating the motor field control relay whereby the window glass may be elevated to its closed position by the motor assembly regardless of the load on the motor, the relay control circuit for maintaining the motor field control relay activated including an electrical condenser adapted to be discharged when the overload detection switch is closed and charged when the overload detection switch is open, the relay control circuit maintaining the motor field control relay activated except when the electrical condenser is fully charged or the safety circuit switch is opened, and the motor field control relay being activated while both the overload detection switch and the safety circuit cancel switch are closed, the condenser being connected to the base of a transistor with the emitter of the transistor connected to a power source and its collector connected via a relay coil to a ground whereby the transistor may become continuous by the charge current and discharge current of the condenser, two relay contacts that close when the relay coil is energized, one of the two relay contacts being connected to the motor field control relay and the other of the contacts being connected via the contact for raising to the self-holding circuit of the relay coil.
Claim 3
Dependent Claim
307 words
A powered window regulator comprising a motor assembly including window raising and window lowering circuits for raising and lowering a window glass, a start switch for the motor having a contact for connecting the window-raising circuit with the motor and a contact for connecting the window-lowering circuit with the motor, an overload detection switch associated with the motor constructed and arranged to close when the load on the motor exceeds a predetermined normal value, a motor field control relay acTivated when the overload detection switch is closed for breaking the window-raising circuit and closing the window-lowering circuit of the motor assembly, a delay relay circuit associated with the motor field control relay for maintaining the motor field control relay activated a predetermined time after the overload detection switch opens, and a manually operable safety circuit cancelling switch for deactivating the motor field control relay whereby the window glass may be elevated to its closed position by the motor assembly regardless of the load on the motor, the relay control circuit for maintaining the motor field control relay activated including an electrical condenser adapted to be discharged when the overload detection switch is closed and charged when the overload detection switch is open, the relay control circuit maintaining the motor field control relay activated except when the electrical condenser is fully charged or the safety circuit switch is opened, and a circuit being formed that connects the motor assembly to a power source via the start switch, the motor field control relay being arranged in parallel to that circuit, a relay coil connected to the power source via a circuit connecting the condenser in parallel to a series circuit of the overload detection switch and the safety circuit cancel switch, and the relay coil and the motor field control relay being connected in parallel to the power source.
Claim 4
Dependent Claim
307 words
A powered window regulator comprising a motor assembly including window raising and window lowering circuits for raising and lowering a window glass, a start switch for the motor having a contact for connecting the window-raising circuit with the motor and a contact for connecting the window-lowering circuit with the motor, an overload detection switch associated with the motor constructed and arranged to close when the load on the motor exceeds a predetermined normal value, a motor field control relay acTivated when the overload detection switch is closed for breaking the window-raising circuit and closing the window-lowering circuit of the motor assembly, a delay relay circuit associated with the motor field control relay for maintaining the motor field control relay activated a predetermined time after the overload detection switch opens, and a manually operable safety circuit cancelling switch for deactivating the motor field control relay whereby the window glass may be elevated to its closed position by the motor assembly regardless of the load on the motor, the relay control circuit for maintaining the motor field control relay activated including an electrical condenser adapted to be discharged when the overload detection switch is closed and charged when the overload detection switch is open, the relay control circuit maintaining the motor field control relay activated except when the electrical condenser is fully charged or the safety circuit switch is opened, and a circuit being formed that connects the motor assembly to a power source via the start switch, the motor field control relay being arranged in parallel to that circuit, a relay coil connected to the power source via a circuit connecting the condenser in parallel to a series circuit of the overload detection switch and the safety circuit cancel switch, and the relay coil and the motor field control relay being connected in parallel to the power source.
References Cited (Backward Citations)
US3513374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |