US3675101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power window reversing unit
Assignee: Motors Liquidation Co
•
Filing: 1970-05-25
•
Granted: 1972-07-04
•
Expires: 1990-05-25
Abstract
Abstract A circuit for controlling a power window operating motor having first and second field windings selectively energized to open and close a window. Placement of a switch in a window opening setting energizes the first winding and opens the window. Placement of the switch in a window closing setting energizes the second winding so as to close the window. Should the window encounter an obstacle when closing the current to the second winding will be increased above a certain level, energizing a current responsive relay and a reversing relay that reverses the motor by deenergizing the second winding and energizing the first winding. A time delay network is provided for preventing the window from being reversed for a predetermined time after the switch is placed in the window closing setting so as to prevent reversal of the motor due to its starting current transients. A limit switch responsive to the window position is provided for preventing reversal of the window when the window is substantially closed so as to permit the motor to draw an increased current when it seals the window closed.
Inventors
- 👤 Samuel B Robbins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:44
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/08; H02H7/085; H02H7/0851; H02H7/0855
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
372 words
Apparatus for controlling the operation of a reversible electric motor selectively energizable by a power source so as to be effective in a first energized condition to open a window and in a second energized condition to close the window comprising, in combination, means for connecting the motor to the power source, switch means having window opening and window closing settings for opening and closing the window, means effective to complete a circuit through the power source and the motor when the switch is in the window opening setting so as to place the motor in its first energized condition, means effective to complete a circuit through the power source and the motor when the switch is in the window closing setting so as to place the motor in its second energized condition, means responsive to the current drawn by the motor when the motor is in its second energized condition and actuable when the current exceeds a predetermined level indicative of the window encountering an obstacle, means responsive to the current responsive means for preventing the motor from assuming its second energized condition and for causing the power source to place the motor in its first energized condition when the current responsive means has been actuated so as to effect opening of the window so long as the switch is in the window closing setting, starting means responsive to movement of the switch means to the window closing setting and actuable when the current through the motor in the second energized condition of the latter exceeds another predetermined level below the first mentioned predetermined level for rendering the current responsive means insensitive to the current surge accompanying initial energization of the motor in the second energized condition thereby to prevent actuation of the current responsive means, and time delay means associated with the starting means for rendering the starting means inoperative after a predetermined time subsequent to movement of the switch means to the window closing setting so that the current responsive means and the means responsive thereto can thereafter cooperate in placing the motor in its first energized condition at substantially the instant the current through the motor in the second energized condition thereof exceeds the first mentioned predetermined level.
Claim 2
Dependent Claim
372 words
Apparatus for controlling the operation of a reversible electric motor selectively energizable by a power source so as to be effective in a first energized condition to open a window and in a second energized condition to close the window comprising, in combination, means for connecting the motor to the power source, switch means having window opening and window closing settings for opening and closing the window, means effective to complete a circuit through the power source and the motor when the switch is in the window opening setting so as to place the motor in its first energized condition, means effective to complete a circuit through the power source and the motor when the switch is in the window closing setting so as to place the motor in its second energized condition, means responsive to the current drawn by the motor when the motor is in its second energized condition and actuable when the current exceeds a predetermined level indicative of the window encountering an obstacle, means responsive to the current responsive means for preventing the motor from assuming its second energized condition and for causing the power source to place the motor in its first energized condition when the current responsive means has been actuated so as to effect opening of the window so long as the switch is in the window closing setting, starting means responsive to movement of the switch means to the window closing setting and actuable when the current through the motor in the second energized condition of the latter exceeds another predetermined level below the first mentioned predetermined level for rendering the current responsive means insensitive to the current surge accompanying initial energization of the motor in the second energized condition thereby to prevent actuation of the current responsive means, and time delay means associated with the starting means for rendering the starting means inoperative after a predetermined time subsequent to movement of the switch means to the window closing setting so that the current responsive means and the means responsive thereto can thereafter cooperate in placing the motor in its first energized condition at substantially the instant the current through the motor in the second energized condition thereof exceeds the first mentioned predetermined level.
Claim 3
Dependent Claim
276 words
Apparatus for controlling the operation of a reversible electric motor having first and second field windings selectively energizable to open and close a window comprising, in combination, a power source, switch means having window opening and window closing settings for opening and closing the window, means effective to complete a first circuit through the power source and the first winding when the switch is in the window opening setting for energizing the first winding so as to open the window, means effective to complete a second circuit through the power source and the second winding when the switch is in the window closing setting for energizing the second winding so as to close the window, means responsive to current in the second circuit and actuable to indicate when current therethrough exceeds a predetermined level indicative of the window encountering an obstacle, means responsive to the current responsive means for opening the second circuit and for completing a third circuit through the power source and the first winding when the current responsive means has been actuated so as to deenergize the second winding and energize the first winding, thereby reversing the window travel so as to open the window until thE switch is removed from the window closing setting or the window is fully opened, and starting means for completing a fourth circuit through the power source and the second winding for a predetermined time upon initial placement of the switch in the window closing setting, thereby energizing the second winding and preventing starting current transients of the motor from actuating the current responsive means so as to effect reversal of the motor during the predetermined time.
Claim 4
Dependent Claim
276 words
Apparatus for controlling the operation of a reversible electric motor having first and second field windings selectively energizable to open and close a window comprising, in combination, a power source, switch means having window opening and window closing settings for opening and closing the window, means effective to complete a first circuit through the power source and the first winding when the switch is in the window opening setting for energizing the first winding so as to open the window, means effective to complete a second circuit through the power source and the second winding when the switch is in the window closing setting for energizing the second winding so as to close the window, means responsive to current in the second circuit and actuable to indicate when current therethrough exceeds a predetermined level indicative of the window encountering an obstacle, means responsive to the current responsive means for opening the second circuit and for completing a third circuit through the power source and the first winding when the current responsive means has been actuated so as to deenergize the second winding and energize the first winding, thereby reversing the window travel so as to open the window until thE switch is removed from the window closing setting or the window is fully opened, and starting means for completing a fourth circuit through the power source and the second winding for a predetermined time upon initial placement of the switch in the window closing setting, thereby energizing the second winding and preventing starting current transients of the motor from actuating the current responsive means so as to effect reversal of the motor during the predetermined time.
Claim 5
Dependent Claim
373 words
Apparatus for selectively energizing a reversible power window motor that is effective when energized in a first energized condition to open a window and when energized in a second energized condition to close the window comprising, in combination, a switch having at least window opening and window closing settings, means for placing the motor in the first energized condition when the switch is placed in the window opening setting so as to open the window, means for placing the motor in the second energized condition when the switch is placed in the window closing setting so as to close the window, current sensing means for sensing the current draw of the motor when it is in the second energized condition, means responsive to the current sensing means effective to place the motor in the first energized condition when the current drawn by the motor while in the second energized condition has exceeded a certain level, thereby reversing the window travel when the motor is stalled sufficiently for the current draw of the motor in the second energized condition to exceed the certain level so as to open the window until the switch is removed from the window closing setting or the window is fully opened, means responsive to the window position for rendering the current sensing means inoperative when the window is substantially closed so as to prevent reversal of the motor when the motor is stalled while sealing the window closed, starting means responsive to movement of the switch to the window closing setting and actuable when the current through the motor in the second energized condition of the latter exceeds another predetermined level below the certain level for rendering the current sensing means insensitive to the current surge accompanying initial energization of the motor in the second energized condition, and time delay means associated with the starting means for rendering the starting means inoperative after a predetermined time subsequent to movement of the switch to the window closing setting so that the current sensing means and the means responsive thereto can thereafter cooperate in placing the motor in its first energized condition at substantially the instant the current through the motor in the second energized condition thereof exceeds the certain level.
Claim 6
Dependent Claim
373 words
Apparatus for selectively energizing a reversible power window motor that is effective when energized in a first energized condition to open a window and when energized in a second energized condition to close the window comprising, in combination, a switch having at least window opening and window closing settings, means for placing the motor in the first energized condition when the switch is placed in the window opening setting so as to open the window, means for placing the motor in the second energized condition when the switch is placed in the window closing setting so as to close the window, current sensing means for sensing the current draw of the motor when it is in the second energized condition, means responsive to the current sensing means effective to place the motor in the first energized condition when the current drawn by the motor while in the second energized condition has exceeded a certain level, thereby reversing the window travel when the motor is stalled sufficiently for the current draw of the motor in the second energized condition to exceed the certain level so as to open the window until the switch is removed from the window closing setting or the window is fully opened, means responsive to the window position for rendering the current sensing means inoperative when the window is substantially closed so as to prevent reversal of the motor when the motor is stalled while sealing the window closed, starting means responsive to movement of the switch to the window closing setting and actuable when the current through the motor in the second energized condition of the latter exceeds another predetermined level below the certain level for rendering the current sensing means insensitive to the current surge accompanying initial energization of the motor in the second energized condition, and time delay means associated with the starting means for rendering the starting means inoperative after a predetermined time subsequent to movement of the switch to the window closing setting so that the current sensing means and the means responsive thereto can thereafter cooperate in placing the motor in its first energized condition at substantially the instant the current through the motor in the second energized condition thereof exceeds the certain level.
Claim 7
Dependent Claim
299 words
Apparatus for controlling the operation of a power window which is opened and closed by an electric motor having first and second field windings selectively energizable to open and close the window comprising, in combination, a power source, a switch having at least window opening and window closing settings for selectively operating the window, the switch completing a current path through the power source and the first winding when in the window opening setting, so as to energize the first winding and open the window, a current responsive relay energizable when current through the relay exceeds a predetermined level, means for energizing the second winding through a current path which includes the power source and the relay when the switch is placed in the window closing setting, switching means responsive to the relay effective to open the current path through the second winding and to energize the first winding when the relay has been energized, thereby effecting opening of the window while the switch is in the window closing setting, starting means responsive to movement of the switch to the window closing setting and actuable when the current through the second field winding of the motor exceeds another predetermined leveL below the first mentioned predetermined level for preventing energization of the relay in response to the current surge accompanying initial energization of the second field winding of the motor, and time delay means associated with the starting means for rendering the starting means inoperative after a predetermined time subsequent to movement of the switch to the window closing setting so that the relay and the switching means can thereafter cooperate in energizing the first field winding of the motor at substantially the instant the current through the second field winding of the motor exceeds the first mentioned predetermined level.
Claim 8
Dependent Claim
299 words
Apparatus for controlling the operation of a power window which is opened and closed by an electric motor having first and second field windings selectively energizable to open and close the window comprising, in combination, a power source, a switch having at least window opening and window closing settings for selectively operating the window, the switch completing a current path through the power source and the first winding when in the window opening setting, so as to energize the first winding and open the window, a current responsive relay energizable when current through the relay exceeds a predetermined level, means for energizing the second winding through a current path which includes the power source and the relay when the switch is placed in the window closing setting, switching means responsive to the relay effective to open the current path through the second winding and to energize the first winding when the relay has been energized, thereby effecting opening of the window while the switch is in the window closing setting, starting means responsive to movement of the switch to the window closing setting and actuable when the current through the second field winding of the motor exceeds another predetermined leveL below the first mentioned predetermined level for preventing energization of the relay in response to the current surge accompanying initial energization of the second field winding of the motor, and time delay means associated with the starting means for rendering the starting means inoperative after a predetermined time subsequent to movement of the switch to the window closing setting so that the relay and the switching means can thereafter cooperate in energizing the first field winding of the motor at substantially the instant the current through the second field winding of the motor exceeds the first mentioned predetermined level.
Claim 9
Dependent Claim
353 words
Apparatus for selectively energizing the windings of a reversible power window motor having a first field winding effective when energized to cause the motor to open a window and a second field winding effective when energized to cause the motor to close the window comprising, in combination, a switch having at least window opening and window closing settings, means for energizing the first winding when the switch is placed in the window opening setting so as to open the window, means for energizing the second winding when the switch is placed in the window closing setting so as to close the window, current sensing means for sensing the current draw of the second winding, means responsive to the current sensing means effective to deenergize the second winding and energize the first winding when the current drawn by the second winding has exceeded a certain level, thereby reversing the window travel when the motor is stalled sufficiently for the current draw of the second winding to exceed the certain level and opening the window until the switch is removed from the window closing setting or the window is fully opened, means responsive to the window position for rendering the current sensing means inoperative when the window is substantially closed so as to prevent reversal of the motor when the motor is stalled while sealing the window closed, starting means responsive to movement of the switch to the window closing setting and actuable when the current through the second field winding of the motor exceeds another predetermined level below the certain level for rendering the current sensing means insensitive to the current surge accompanying initial energization of the second field winding of the motor, and time delay means associated with the starting means for rendering the starting means inoperative after a predetermined time subsequent to movement of the switch to the window closing setting so that the current sensing means and the means responsive thereto can thereafter cooperate in energizing the first field winding of the motor at substantially the instant the current through the second field winding of the motor exceeds the certain level.
Claim 10
Dependent Claim
353 words
Apparatus for selectively energizing the windings of a reversible power window motor having a first field winding effective when energized to cause the motor to open a window and a second field winding effective when energized to cause the motor to close the window comprising, in combination, a switch having at least window opening and window closing settings, means for energizing the first winding when the switch is placed in the window opening setting so as to open the window, means for energizing the second winding when the switch is placed in the window closing setting so as to close the window, current sensing means for sensing the current draw of the second winding, means responsive to the current sensing means effective to deenergize the second winding and energize the first winding when the current drawn by the second winding has exceeded a certain level, thereby reversing the window travel when the motor is stalled sufficiently for the current draw of the second winding to exceed the certain level and opening the window until the switch is removed from the window closing setting or the window is fully opened, means responsive to the window position for rendering the current sensing means inoperative when the window is substantially closed so as to prevent reversal of the motor when the motor is stalled while sealing the window closed, starting means responsive to movement of the switch to the window closing setting and actuable when the current through the second field winding of the motor exceeds another predetermined level below the certain level for rendering the current sensing means insensitive to the current surge accompanying initial energization of the second field winding of the motor, and time delay means associated with the starting means for rendering the starting means inoperative after a predetermined time subsequent to movement of the switch to the window closing setting so that the current sensing means and the means responsive thereto can thereafter cooperate in energizing the first field winding of the motor at substantially the instant the current through the second field winding of the motor exceeds the certain level.
Claim 11
Dependent Claim
304 words
Apparatus for opening and closing a window comprising, in combination, a reversible motor having first and second field windings, the motor being drivably connected to the window so as to open the window when the first winding is energized, and to close the window when the second winding is energized, a power source, a switch having at least window opening and window closing settings for opening and closing the window, the switch being operable when in the window opening setting to complete a circuit through the power source and the first winding so as to energize the first winding and effect opening of the window, a current responsive relay energizable when current therethrough exceeds a certain level in series circuit with the power source and the second winding for sensing the current in the second winding, the power source energizing the second winding through the current responsive relay when the switch is in the window closing setting, a reversing relay responsive to the current responsive relay effective to connect the first winding in place of the second winding in the series circuit when the current responsive relay has been energized, thereby energizing the first winding and oPening the window so long as the switch remains in the window closing setting, time delay means including a starting relay responsive to the switch setting and effective upon placement of the switch in the window closing setting to prevent the current responsive relay from being energized for a predetermined time, thereby preventing starting current transients of the motor from energizing the current responsive relay, and means responsive to the window position and effective to prevent the current responsive means from being energized when the window is substantially closed so as to permit the motor to draw currents greater than the certain level when sealing the window closed.
Claim 12
Dependent Claim
304 words
Apparatus for opening and closing a window comprising, in combination, a reversible motor having first and second field windings, the motor being drivably connected to the window so as to open the window when the first winding is energized, and to close the window when the second winding is energized, a power source, a switch having at least window opening and window closing settings for opening and closing the window, the switch being operable when in the window opening setting to complete a circuit through the power source and the first winding so as to energize the first winding and effect opening of the window, a current responsive relay energizable when current therethrough exceeds a certain level in series circuit with the power source and the second winding for sensing the current in the second winding, the power source energizing the second winding through the current responsive relay when the switch is in the window closing setting, a reversing relay responsive to the current responsive relay effective to connect the first winding in place of the second winding in the series circuit when the current responsive relay has been energized, thereby energizing the first winding and oPening the window so long as the switch remains in the window closing setting, time delay means including a starting relay responsive to the switch setting and effective upon placement of the switch in the window closing setting to prevent the current responsive relay from being energized for a predetermined time, thereby preventing starting current transients of the motor from energizing the current responsive relay, and means responsive to the window position and effective to prevent the current responsive means from being energized when the window is substantially closed so as to permit the motor to draw currents greater than the certain level when sealing the window closed.
Claim 13
Dependent Claim
337 words
Apparatus for controlling the operation of a reversible electric motor having first and second field windings selectively energizable to open and close a window comprising, in combination, a power source, switch means having window opening and window closing settings for opening and closing the window, means effective to complete a circuit through the power source and the first winding when the switch is in the window opening setting for energizing the first winding so as to open the window, means effective to complete a circuit through the power source and the second winding when the switch is in the window closing setting for energizing the second winding so as to close the window, means responsive to current in the circuit through the second winding and actuable when current therethrough exceeds a predetermined level indicative of the window encountering an obstacle, current directing means responsive to the current responsive means for preventing the energization of the first winding and for completing a circuit through the power source and the second winding when the current responsive means has been actuated so as to effect opening of the window so long as the switch is in the window closing setting, starting means responsive to movement of the switch means to the window closing setting and actuable when the current through the second field winding of the motor exceeds another predetermined level below the first mentioned predetermined level for rendering the current responsive means insensitive to the current surge accompanying initial energization of the second field winding of the motor thereby to prevent actuation of the current responsive means, and time delay means associated with the starting means for rendering the starting means inoperative after a predetermined time subsequent to movement of the switch means to the window closing setting so that the current responsive means and the current directing means can thereafter cooperate in energizing the first winding of the motor at substantially the instant the current through the second winding of the motor exceeds the first mentioned predetermined level.
Claim 14
Dependent Claim
337 words
Apparatus for controlling the operation of a reversible electric motor having first and second field windings selectively energizable to open and close a window comprising, in combination, a power source, switch means having window opening and window closing settings for opening and closing the window, means effective to complete a circuit through the power source and the first winding when the switch is in the window opening setting for energizing the first winding so as to open the window, means effective to complete a circuit through the power source and the second winding when the switch is in the window closing setting for energizing the second winding so as to close the window, means responsive to current in the circuit through the second winding and actuable when current therethrough exceeds a predetermined level indicative of the window encountering an obstacle, current directing means responsive to the current responsive means for preventing the energization of the first winding and for completing a circuit through the power source and the second winding when the current responsive means has been actuated so as to effect opening of the window so long as the switch is in the window closing setting, starting means responsive to movement of the switch means to the window closing setting and actuable when the current through the second field winding of the motor exceeds another predetermined level below the first mentioned predetermined level for rendering the current responsive means insensitive to the current surge accompanying initial energization of the second field winding of the motor thereby to prevent actuation of the current responsive means, and time delay means associated with the starting means for rendering the starting means inoperative after a predetermined time subsequent to movement of the switch means to the window closing setting so that the current responsive means and the current directing means can thereafter cooperate in energizing the first winding of the motor at substantially the instant the current through the second winding of the motor exceeds the first mentioned predetermined level.
References Cited (Backward Citations)
US3513374A
Cited
US3581174A
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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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |