US4833373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for shaking water off windshield
Assignee: Nissan Motor Co Ltd
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Filing: 1987-04-09
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Granted: 1989-05-23
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Expires: 2007-04-09
Abstract
Abstract A system for shaking water off a surface includes an electromagnetically operable driver unit for driving a member having the surface. The driver unit is connected to a control unit which controls oscillation frequency to be generated by the driver unit. The control unit adjusts the frequency of oscillation transmitted to the member for matching the oscillation frequency with the resonating frequency of the member for effectively shaking the water off the surface.
Inventors
- 👤 Kazuhiro Doi
- 👤 Bunichiro Fujii
- 👤 Naoki Honda
- 👤 Hiroyuki Kanesaka
- 👤 Hirofumi Tsuchida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:57
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60R; B60R1/00; B60R1/02; B60R1/06; B60R1/0602
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
162 words
A system for shaking water off a surface of an essentially planar member wherein the mass of the water and of the planar member varies depending upon the amount of water on the planar member comprising: a driver unit means coupled with said essentially planar member for driving the latter to oscillate at a controlled frequency for causing oscillation at said controlled frequency of said water on said surface to shake off said surface; detector means for detecting the oscillating acceleration of said planar member and producing a signal indicative of the detected acceleration; a driving signal generator producing a driving signal to be applied to said driver unit means for driving the latter at said controlled frequency, said driving signal being variable of the frequency for adjusting the oscillation frequency of said planar member; and means responsive to said acceleration indicating signal for adjusting the frequency of said driving signal generator to a resonating frequency of said water covered planar member.
Claim 2
Independent Claim
162 words
A system for shaking water off a surface of an essentially planar member wherein the mass of the water and of the planar member varies depending upon the amount of water on the planar member comprising: a driver unit means coupled with said essentially planar member for driving the latter to oscillate at a controlled frequency for causing oscillation at said controlled frequency of said water on said surface to shake off said surface; detector means for detecting the oscillating acceleration of said planar member and producing a signal indicative of the detected acceleration; a driving signal generator producing a driving signal to be applied to said driver unit means for driving the latter at said controlled frequency, said driving signal being variable of the frequency for adjusting the oscillation frequency of said planar member; and means responsive to said acceleration indicating signal for adjusting the frequency of said driving signal generator to a resonating frequency of said water covered planar member.
Claim 3
Dependent Claim
49 words
A system for shaking water off a surface as set forth in claim 1, wherein said adjusting means gradually varies oscillation frequency at a given rate and continuously monitors said acceleration indicative detector signal values for detecting the peak thereof for detecting said resonating frequency of said planar member.
Claim 4
Dependent Claim
22 words
A system for shaking water off a surface as set forth in claim 2, wherein said planar member is an automotive windshield.
Claim 5
Dependent Claim
27 words
A system for shaking water off a surface as set forth in claim 2, wherein said planar member is a rear view mirror of an automotive vehicle.
Claim 6
Independent Claim
141 words
A system for shaking off a surface of an essentially planar member comprising: a driver unit means coupled with said essentially planar member for driving the latter to oscillate at a controlled frequency for causing oscillation at said controlled frequency of said water of said surface to shake off said surface; a strain gage monitoring mass of the oscillating planar member which has water on said surface; a driving signal generator producing a driving signal to be applied to said driver unit means for driving the latter at said controlled frequency, said driving signal being variable of the frequency for adjusting the oscillation frequency of said planar member; and means for adjusting the frequency of said driving signal to a resonating frequency of said member, said adjusting member deriving a resonating frequency of said planer member based on said mass weight.
Claim 7
Independent Claim
141 words
A system for shaking off a surface of an essentially planar member comprising: a driver unit means coupled with said essentially planar member for driving the latter to oscillate at a controlled frequency for causing oscillation at said controlled frequency of said water of said surface to shake off said surface; a strain gage monitoring mass of the oscillating planar member which has water on said surface; a driving signal generator producing a driving signal to be applied to said driver unit means for driving the latter at said controlled frequency, said driving signal being variable of the frequency for adjusting the oscillation frequency of said planar member; and means for adjusting the frequency of said driving signal to a resonating frequency of said member, said adjusting member deriving a resonating frequency of said planer member based on said mass weight.
Claim 8
Dependent Claim
63 words
A system for shaking water off the surface as set forth in claim 5, which further comprises a detector for monitoring electric current applied to said driver unit means for detecting the greatest value thereof, and said adjusting means adjust said driver unit means for driving said plane member to the frequency at which said greatest value of said electric current is obtained.
Claim 9
Independent Claim
155 words
A system for shaking water off a surface of a vehicular windshield comprising: a driver unit means coupled with said windshield for driving the latter to oscillate at a controlled frequency for causing oscillation at said controlled frequency of said water of said surface to shake off said surface; a driving signal generator producing a driving signal to be applied to said driver unit means for driving the latter at said controlled frequency, said driving signal being variable of the frequency for adjusting the oscillation frequency of said windshield; a sensor means for detecting a preselected parameter which affecting resonating frequency of said windshield to produce a sensor signal indicative thereof; and means for deriving a resonating frequency of said planer member on the basis of said sensor signal value and adjusting the frequency of said driving signal for driving said driver unit means at a frequency corresponding to said resonating frequency of said member.
Claim 10
Independent Claim
155 words
A system for shaking water off a surface of a vehicular windshield comprising: a driver unit means coupled with said windshield for driving the latter to oscillate at a controlled frequency for causing oscillation at said controlled frequency of said water of said surface to shake off said surface; a driving signal generator producing a driving signal to be applied to said driver unit means for driving the latter at said controlled frequency, said driving signal being variable of the frequency for adjusting the oscillation frequency of said windshield; a sensor means for detecting a preselected parameter which affecting resonating frequency of said windshield to produce a sensor signal indicative thereof; and means for deriving a resonating frequency of said planer member on the basis of said sensor signal value and adjusting the frequency of said driving signal for driving said driver unit means at a frequency corresponding to said resonating frequency of said member.
Claim 11
Independent Claim
156 words
A system for shaking water off a surface of an essentially planar member comprising: a driver unit means coupled with said essentially planar member for driving the later to oscillate at a controlled frequency for causing oscillation at said controlled frequency of said water of said surface to shake off surface; a driving signal generator producing a driving signal to be applied to said driver unit means for driving the latter at said controlled frequency, said driving signal being variable of the frequency for adjusting the oscillation frequency of said planar member; a sensor means for monitoring variation of mass weight of said planar member for producing a mass weight indicative signal; and means for deriving a resonating frequency of said planar member on the basis of said sensor signal value and adjusting the frequency of said driving signal for driving said driver unit means at a frequency corresponding to said resonating frequency of said member.
Claim 12
Independent Claim
156 words
A system for shaking water off a surface of an essentially planar member comprising: a driver unit means coupled with said essentially planar member for driving the later to oscillate at a controlled frequency for causing oscillation at said controlled frequency of said water of said surface to shake off surface; a driving signal generator producing a driving signal to be applied to said driver unit means for driving the latter at said controlled frequency, said driving signal being variable of the frequency for adjusting the oscillation frequency of said planar member; a sensor means for monitoring variation of mass weight of said planar member for producing a mass weight indicative signal; and means for deriving a resonating frequency of said planar member on the basis of said sensor signal value and adjusting the frequency of said driving signal for driving said driver unit means at a frequency corresponding to said resonating frequency of said member.
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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) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |