EP0136984A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Windscreen wiper autonomous device
Assignee: Individual
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Filing: 1984-09-05
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Granted: —
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Expires: 2004-09-05
Abstract
Abstract The device is provided with two probes S1 and S2 that are placed on the external side of the windscreen of a vehicle and comprise a comb shaped element 100 and a linear element 101, both of which are conductors. The former is opposite and close to a further comb shaped element 102 that is subjected to a positive potential Q derived from the dashboard of the vehicle, while the element 101 is a greater distance away from the comb shaped element 102. When the rain closes the contact between the element 102 and probe S1 or S2, the said probes create signals that are suitably recognized by a control circuit of the windscreen wiper motor MT that comprises a detection/regulation circuit CP which, through a control circuit CT, attends to transferring suitable signals to a pilot interface IP for the motor MT to be operated at the first or at the second speed or for it to be halted.
Inventors
- 👤 Luigi Marra
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 08:11
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/04; B60S1/06; B60S1/08; B60S1/0818; B60S1/0822; B60S1/0825; B60S1/0851
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
283 words
"indscreen wiper auto_omous operation davice, in which the motor NT thereof is connected to an orthodox circuit for manually operated windscreen wipers wherein provision is mode for a hand operated lever for switching on the windscreen wipers, constituted by a double throw switch C2-C2' in which the configuration of the contact C2, connected to the positive potential Q derived from the dashboard of the vehicle, varies from a first inactive position NO, with the contact C2' earthing the supply to the motor MT through an internal switch C3 of the said motor, to at least one second active position M1 in which the contact C2 supplies the said potential Q. to the motor MT, with the contact C2' open, the said internal switch C3 being connected in series to the said contact C2 and put alternately to earth and in contact with the positive potential BT of the battery at the time the motor MT is rotating, characterizes by the fact that placed on the external side of the windscreen of the vehicle, in the region of the radius of action of the wiper blades, there is at least one conductor element 100 that defines a probe S1 and is opposite, close to but not in contact with a similar conductor element 102 to which, during autonomous operation, the said positive potential Q derived from the dashboard of the vehicle is carried, the said probe S1 creating, in the case of rain, and only when the water closes the contact between it and the said conductor element 102, for a downstream electronic circuit, a signal giving consent to the autonomous operation of the motor MT of the windscreen wipers, at a first speed.
Claim 2
Dependent Claim
283 words
"indscreen wiper auto_omous operation davice, in which the motor NT thereof is connected to an orthodox circuit for manually operated windscreen wipers wherein provision is mode for a hand operated lever for switching on the windscreen wipers, constituted by a double throw switch C2-C2' in which the configuration of the contact C2, connected to the positive potential Q derived from the dashboard of the vehicle, varies from a first inactive position NO, with the contact C2' earthing the supply to the motor MT through an internal switch C3 of the said motor, to at least one second active position M1 in which the contact C2 supplies the said potential Q. to the motor MT, with the contact C2' open, the said internal switch C3 being connected in series to the said contact C2 and put alternately to earth and in contact with the positive potential BT of the battery at the time the motor MT is rotating, characterizes by the fact that placed on the external side of the windscreen of the vehicle, in the region of the radius of action of the wiper blades, there is at least one conductor element 100 that defines a probe S1 and is opposite, close to but not in contact with a similar conductor element 102 to which, during autonomous operation, the said positive potential Q derived from the dashboard of the vehicle is carried, the said probe S1 creating, in the case of rain, and only when the water closes the contact between it and the said conductor element 102, for a downstream electronic circuit, a signal giving consent to the autonomous operation of the motor MT of the windscreen wipers, at a first speed.
Claim 3
Dependent Claim
120 words
Device according to Claim 1 , characterized by the fact that placed on the external side of the windscreen of the vehicle, in the region of the radius of action of the wiper blades, there is at least one further conductor element 101 that defines a probe S2, a greater distance away from the said conductor element 102 than the said probe S1, the said second probe creating, in the case of heavy rain, and only when the water closes the contact between it and the said conductor element 102, for the said downstream electronic circuit, a signal giving consent to the autonomous operation of the motor MT of the windscreen wipers, at a second speed greater than the first.
Claim 4
Dependent Claim
152 words
Device according to Claims 1 or 2, characterized by the fact of comprising a main switch CA, connected to the positive potential Q on the dashboard, the configuration of which varies from a first position N, in which the said switch is in series with the said manual lever, to a second position A, in which the said positive potential Q is carried to the said conductor element 102, each probe being ried to the said conductor connected to the said electronic circuit that comprises a detection/regulation circuit CP which, through a control circuit CT placed downstream, attends to transferring suitable operating signals to a pilot interface IP comprising the said orthodox manual operation circuit, the essential tash of which is to run the motor MT for as long, and only as long, as the water closes at least one of the contacts between each probe and the said conductor element 102.
Claim 5
Dependent Claim
181 words
Device according to Claim 3, in which it is envisaged that the windscreen wipers operate at one speed only, characterized by the fact that the said detection/regulation circuit is constituted by a suitable amplifier CPA that supplies a signal X, when the probe S1 is energized, to the said control circuit CT that is envisaged to be a normal amplifier T1 whose lead is constituted by a relay RC' which, when energized, operates the changeover, inside the said pilot interface IP, of a double throw switch Ca' -Ca" from the inactive position, in which the contact Ca' earths the said internal switch C3 of the motor MT and the contact Ca" is open, to the active position in which the contact Ca' opens and the contact Ca" places the motor MT, through the said contact C2', in communication with the said positive potential BT of the battery, the said double throw switch Ca'-Ca" returning to the inactive position when the relay is no longer energized and the task of eventually terminating the wiping cycle being entrusted to the internal switch C3
Claim 6
Dependent Claim
161 words
Device according to Claim 3, in which it is envisaged that the windscreen wipers operate at two or more speeds, characterized by the fact that the said detection/regulation circuit CP is able to ascertain the state of the two probes S1 and S2, and to ascertain, through suitable signals X4, X5 coming from the said pilot interface IP, whether the motor MT is to be operated at the first or at the second speed and, as a function of the acquired information, is able to supply the said control circuit CT with suitable signals X1, X2 and X3 which, through corresponding suitable means of amplification T2, T3 and T4, respectively, of the control circuit CT, place the said pilot interface IP, that contains the said orthodox manual operation circuit, in a condition to run the motor MT at the first or at the second speed or to stop autonomously the motor MT when the probes S1 and S2 are not energized.
Claim 7
Dependent Claim
274 words
Device according to Claim 5, characterized by the fact that, in addition to the said orthodox manual operation circuit, the said pilot interface IT is provided with: a switch CA1, in series with the said contact C2' , that opens automatically when the said main switch CA is placed in position A; a switch CA2, in series with the said internal switch C3 in the position towards earth, that opens automatically when the said main switch CA is placed in position A; a pair of electronic switches constituted by corresponding thyristors TY1 and TY2, connected in series between the said potential BT of the battery and the first speed winding of the motor MT, and placed in the conducting state by the said signal X1 or X2 and by the signal X1, respectively, the said thyristors supplying the said first speed signal X4 to the said detection/regulation circuit CF, the thyristor TY1 being connected in parallel to the said internal switch C3; a third electronic switch TY3, placed in the conducting state by the said signal X2, situated between the second speed winding of the motor MT and the central node in between the said thyristors TY1 and TY2, the said thyristor TY3 supplying the said second speed signal X5 to the said detection/regulation circuit CP; and a switch C, connected in series to the switch CA2 in the open or changed over position and able to be earthed in the closed position by a relay RC, in turn energized by the said signal X3, for taking the motor MT completely out of action or for a halt due to a change in speed.
Claim 8
Dependent Claim
289 words
Device according to Claim 5, characterized by the fact that, in addition to the said orthodox manual operation circuit, the said pilot interface IP is provided with : a switch CA1, in series with the said contact C2 t , that opens automatically when the said main switch CA is placed in position A; two switches C' and C", the former connected in seriec to the potential BT of the battery and in parallel with the said internal switch C3, and the latter in series with the said internal switch C3 in the earth position, the configuration of the said switches varying from a first inactive position, in which C' is open and C" is closed towards earth, and a second active position, in which C' is closed and C" is open, the said switches being placed in the active position through the tripling of a relay RC by means of the said signal X1, X2 or X3, with the deenergizing of the relay RC bringing about the motor MT being taken com- plately out of operation or halted due to a change in speed; a first thyristor TY2, connected between the said switch C' and the first speed winding of the motor MT, placed in the conducting state by the. said signal X1 and, in this case, supplying the said first speed signal K4 to the said detection/regulation circuit CF; and a second thyristor TY3 connected in series to the said internal switch C3 and0 to the said swithc C', and connected to the second speed winding of the actor IT, placed in the conducting state by the said signal X2 and, in this case, supplying the said second speed signal X5 to the said detection/regulation circuit CF.
Claim 9
Dependent Claim
43 words
Device according to Claim 1, characterized by the fact that the said conductor element 102 and the said conductor element 100 that defines the probe S1 are of a comb conformation and that one penetrates into the other, without one touching the other.
References Cited (Backward Citations)
No citation records indexed.
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