Patent US4625157A successfully refreshed from Google Patents.
US4625157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Windshield wiper control
Assignee: Individual
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Filing: 1984-12-28
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Granted: 1986-11-25
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Expires: 2004-12-28
Abstract
Abstract Method and apparatus for controlling the intermittent speed of a windshield wiper. A multi-speed motor for operating the windshield wiper is adapted to react to a change in drag of the wiper to automatically switch the motor to a different intermittent rate according to the load condition that exists.
Inventors
- 👤 Horace R. Phillimore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:25
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/04; B60S1/06; B60S1/08; B60S1/0803; B60S1/0807; Y; Y10; Y10S; Y10S15/00; Y10S15/15; Y10S318/00; Y10S318/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
86 words
Apparatus for controlling the speed of a windshield wiper, which comprises a motor for operating the wiper, means for operating said motor intermittently, means for producing an electrical signal having a value in accordance with the speed of said motor, and means connected to the operating means and responsive solely to said electrical signal for automatically changing the rate of intermittent operation of said motor when it undergoes a change in speed, wherein the changing means is actuated independently of the position of said windshield wiper.
Claim 2
Dependent Claim
86 words
Apparatus for controlling the speed of a windshield wiper, which comprises a motor for operating the wiper, means for operating said motor intermittently, means for producing an electrical signal having a value in accordance with the speed of said motor, and means connected to the operating means and responsive solely to said electrical signal for automatically changing the rate of intermittent operation of said motor when it undergoes a change in speed, wherein the changing means is actuated independently of the position of said windshield wiper.
Claim 3
Dependent Claim
18 words
Apparatus as defined in claim 1 wherein the rate changing means comprises means having a prescribed time constant.
Claim 4
Dependent Claim
18 words
Apparatus as defined in claim 1 wherein the operating means includes bypass controlled by the rate changing means.
Claim 5
Dependent Claim
98 words
Apparatus for controlling the speed of a windshield wiper motor, which comprises a motor for operating the wiper, means for operating said motor intermittently including a bypass or shunt with a set of relay contacts, means for producing an electrical signal having a value in accordance with the speed of said motor, and means connected to the operating means and responsive solely to said electrical signal for automatically changing the rate of intermittent operation of said motor when it undergoes a change in speed and including a relay for operating said relay contacts in said bypass or shunt.
Claim 6
Dependent Claim
98 words
Apparatus for controlling the speed of a windshield wiper motor, which comprises a motor for operating the wiper, means for operating said motor intermittently including a bypass or shunt with a set of relay contacts, means for producing an electrical signal having a value in accordance with the speed of said motor, and means connected to the operating means and responsive solely to said electrical signal for automatically changing the rate of intermittent operation of said motor when it undergoes a change in speed and including a relay for operating said relay contacts in said bypass or shunt.
Claim 7
Dependent Claim
26 words
Apparatus as defined in claim 4 wherein said relay includes contacts which are normally open and are closed upon the detection of a change in speed.
Claim 8
Dependent Claim
74 words
Apparatus for controlling the speed of a windshield wiper, which comprises a motor for operating the wiper, means for operating said motor intermittently, means for producing an electrical signal having a value in accordance with the speed of said motor, means connected to the operating means and including a comparator responsive solely to said electrical signal for automatically changing the rate of intermittent operation of said motor when it undergoes a change in speed.
Claim 9
Dependent Claim
74 words
Apparatus for controlling the speed of a windshield wiper, which comprises a motor for operating the wiper, means for operating said motor intermittently, means for producing an electrical signal having a value in accordance with the speed of said motor, means connected to the operating means and including a comparator responsive solely to said electrical signal for automatically changing the rate of intermittent operation of said motor when it undergoes a change in speed.
Claim 10
Dependent Claim
20 words
Apparatus as defined in claim 6 wherein said comparator has one input terminal connected to a resistance capacitance discharge circuit.
Claim 11
Dependent Claim
18 words
Apparatus as defined in claim 6 wherein wherein said resistance capacitance dischange circuit is energized by an amplifier.
Claim 12
Dependent Claim
81 words
Apparatus for controlling the speed of a windshield wiper, which comprises a motor for operating the wiper, means for operating said motor intermittently, means for producing an electrical signal having a value in accordance with the speed of said motor, and means connected to the operating means and responsive solely to said electrical signal for automatically changing the rate of intermittent operation of said motor when it undergoes a change in speed and comprising relay-controlled means having a changeable time constant.
Claim 13
Dependent Claim
81 words
Apparatus for controlling the speed of a windshield wiper, which comprises a motor for operating the wiper, means for operating said motor intermittently, means for producing an electrical signal having a value in accordance with the speed of said motor, and means connected to the operating means and responsive solely to said electrical signal for automatically changing the rate of intermittent operation of said motor when it undergoes a change in speed and comprising relay-controlled means having a changeable time constant.
Claim 14
Dependent Claim
27 words
Apparatus as defined in claim 9 wherein a change in speed signal is developed across a motor resistor and said signal controls the operating means in shunt.
Claim 15
Dependent Claim
70 words
Apparatus as defined in claim 9 wherein said operating means comprises a capacitor directly connected to said motor, a pair of relay contacts connected to said capacitor, a switch for intermittent operation connected to said contacts, and a battery interconnecting said switch and the operating means; and wherein the changing means comprises an amplifier connected to said operating means, and a relay for operating said contacts connected to said amplifier.
Claim 16
Dependent Claim
101 words
Apparatus as defined in claim 9 wherein said operating means comprises a set of normally closed contacts directly connected to said motor, a switch for intermittent operation connected to said contacts, and a battery interconnecting said switch and the operating means; and wherein the changing means comprises an amplifier connected to said operating means, a time-constant circuit in shunt with the output of said amplifier, a comparator having a negative input terminal connected to said time-constant circuit and a positive input terminal connected to ground, and a relay connected to the output of said comparator for opening said normally closed contacts.
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) | 1989-11-24 | 1990-05-26 | 1990-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-24 | 1994-05-26 | 1994-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-24 | 1998-05-26 | 1998-11-25 | $7700.00 | Window Closed / Lapsed |