US5097188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motorized automobile antenna control device
Assignee: Harada Industry Co Ltd
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Filing: 1990-12-11
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Granted: 1992-03-17
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Expires: 2010-12-11
Abstract
Abstract A control device which raises and lowers a motorized automobile antenna by means of an antenna up-down switch, the power supply for a motor which drives the antenna being cut off when the antenna has reached its highest or lowest point and such a position of the antenna is detected. By supplying a voltage from the automobile ignition key to a control circuit when the antenna up-down switch is in a neutral position, the antenna is operated by the antenna up-down switch only when the automobile ignition key is on, and when the automobile ignition key is switched off, the antenna is retracted by a trigger which is actuated when the input of the control circuit reaches zero.
Inventors
- 👤 Kazuhiko Nakase
- 👤 Yuji Maeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:30
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/08; H01Q1/10; H01Q1/103
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
200 words
A motorized automobile antenna control device which controls raising and lowering of an automobile antenna to extend or retract said antenna, said antenna control device comprising: a detection means which detects whether said automobile antenna has reached its highest point or lowest point during the raising and lowering of said antenna; a motor power supply cut-off means for cutting off a power supply for a motor, which drives said automobile antenna, when said antenna has reached its highest or lowest point of extension or retraction respectively, said motor power supply cut-off means comprising a means for sensing when a motor current exceeds a predetermined level when said automobile antenna has reached said highest or lowest point of extension or retraction respectively; and an antenna up-down switch which actuates said motor to make positive rotation, reverse rotation and stop, said antenna up-down switch comprising antenna up, antenna down and an antenna stop neutral positions wherein said antenna raises when said antenna up-down switch is in said antenna up position, lowers when said antenna up-down switch is in said antenna down position and lowers when an ignition switch is turned off while said antenna up-down switch is in said stop neutral position.
Claim 2
Dependent Claim
200 words
A motorized automobile antenna control device which controls raising and lowering of an automobile antenna to extend or retract said antenna, said antenna control device comprising: a detection means which detects whether said automobile antenna has reached its highest point or lowest point during the raising and lowering of said antenna; a motor power supply cut-off means for cutting off a power supply for a motor, which drives said automobile antenna, when said antenna has reached its highest or lowest point of extension or retraction respectively, said motor power supply cut-off means comprising a means for sensing when a motor current exceeds a predetermined level when said automobile antenna has reached said highest or lowest point of extension or retraction respectively; and an antenna up-down switch which actuates said motor to make positive rotation, reverse rotation and stop, said antenna up-down switch comprising antenna up, antenna down and an antenna stop neutral positions wherein said antenna raises when said antenna up-down switch is in said antenna up position, lowers when said antenna up-down switch is in said antenna down position and lowers when an ignition switch is turned off while said antenna up-down switch is in said stop neutral position.
Claim 3
Dependent Claim
19 words
A device according to claim 1, wherein said motor power supply cut-off means further comprises motor power supplying means.
Claim 4
Dependent Claim
25 words
A device according to claim 2, wherein said motor power supply cut-off means comprises a power transistor which is connected in series to said motor.
Claim 5
Dependent Claim
122 words
A device according to claim 1 wherein a means for generating trigger pulses for controlling said motor power supply cut-off means is provided, said generating means generating a trigger pulse to cause said motor power supply cut-off means to supply power to said motor when said antenna up-down switch is in said antenna up position and antenna down position or said stop neutral position with said ignition switch turned off, and generating a trigger pulse to cause said motor power supply cut-off means to cut off power to said motor when said antenna up-down switch is in said stop neutral position with said ignition switch turned on or said detection means detects said highest or lowest point of extension or retraction 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) | 1995-03-17 | 1995-09-16 | 1996-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-17 | 1999-09-16 | 2000-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-17 | 2003-09-16 | 2004-03-17 | $7700.00 | Window Closed / Lapsed |