EP0119778A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Motor operated mechanism
Assignee: ZF International UK Ltd
•
Filing: 1984-03-05
•
Granted: —
•
Expires: 2004-03-05
Abstract
Abstract A windscreen wiper mechanism includes a motor driven reciprocating link (112) oscillating on rotary wiper arm shaft (116) via an arm (115) secured to the shaft (116). A limit switch (117) is slidably mounted on a fixed plate (118) through rivets (130) and an elongate slot (131) and a friction material (132). An operating member (121) of the limit switch (117) is disposed to be engaged by a member (140) mounted on arm (115). The limit switch (117) is mounted so that the force required to move it relative to the plate (118) is greater than that required to operate the operating member (121) but less than the maximum force which can be applied by the motor to the arm (115). The position of the limit switch (117) can thus be initially set automatically. A plate (128) on the body of the switch (117) provides an abutment for the member (140) on the arm (115) so that the overwiping and unwanted locking of the mechanism is prevented by the abutment which is automatically set in the required position initially.
Inventors
- 👤 Robert John Lane
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 15:44
CPC Classifications
B; B60; B60S; B60S1/00; B60S1/02; B60S1/04; B60S1/06; B60S1/16; B60S1/18; B60S1/185; B60S1/08; B60S1/24; B60S1/32; B60S1/34; B60S1/3488; B60S1/3495
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
127 words
A motor-operated mechanism including a motor, a switch mounted on a support, a member movable relative to said support, and means connecting the member to the motor so that operation of the motor causes movement of the member towards and away from a position for engaging a movable operating element of the switch, wherein means mount the switch on the support for movement by the member from an initial position into a set position, said means providing a frictional resistance to said movement of the switch such that the force required to overcome the frictional resistance is greater than the force required to move the operating element of the switch but less than the force which is capable of being applied by the motor via said member.
Claim 2
Dependent Claim
127 words
A motor-operated mechanism including a motor, a switch mounted on a support, a member movable relative to said support, and means connecting the member to the motor so that operation of the motor causes movement of the member towards and away from a position for engaging a movable operating element of the switch, wherein means mount the switch on the support for movement by the member from an initial position into a set position, said means providing a frictional resistance to said movement of the switch such that the force required to overcome the frictional resistance is greater than the force required to move the operating element of the switch but less than the force which is capable of being applied by the motor via said member.
Claim 3
Dependent Claim
40 words
A mechanism as claimed in claim 1, wherein the switch is mounted on the support through an interengaging slot and lug arrangement, there being friction means between a part associated with the switch and a part associated with the support.
Claim 4
Dependent Claim
39 words
A mechanism as claimed in claim 2, wherein the or each lug is in the form of a rivet and means are provided on the rivet for limiting the force by which the respective parts can be urged together.
Claim 5
Dependent Claim
60 words
A mechanism as claimed in any preceding claim, wherein said member, or a part carried by the member, is so formed as to be engaged directly with a body of the switch or with a part fixed relative to the body of the switch after the operating element has been moved by a distance which produces operation of the switch.
Claim 6
Dependent Claim
36 words
A mechanism as claimed in any preceding claim, wherein the switch is fixedly secured to a plate which is itself mounted on said support so as to be slidable relative to the support with frictional resistance.
Claim 7
Dependent Claim
69 words
A mechanism as claimed in claim 1, wherein the member comprises an arm which is secured to a rotary shaft angularly oscillatable in a body fixed relative to the support, wherein the switch is mounted on a plate which is angularly movable relative to the body about the axis of the shaft, and wherein friction means impart a frictional resistance to movement of the plate relative to the support.
Claim 8
Dependent Claim
25 words
A mechanism as claimed in any preceding claim, wherein locking means are provided for securing the switch in its set position relative to the support.
Claim 9
Dependent Claim
127 words
A motor operated mechanism including a motor, a support, a member movable relative to the support, means connecting the member to the motor so that operation of the motor causes movement of the member towards and away from a limit position, an abutment for engagement by said member in said limit position for preventing movement of said member beyond said limit position, and mounting means mounting said abutment on said support for movement by the member from an initial position to a set position, said mounting means providing a frictional resistance to said movement of the member such that the force required to overcome the frictional resistance is less than the force which is capable of being applied to the abutment by the motor via the member.
Claim 10
Dependent Claim
127 words
A motor operated mechanism including a motor, a support, a member movable relative to the support, means connecting the member to the motor so that operation of the motor causes movement of the member towards and away from a limit position, an abutment for engagement by said member in said limit position for preventing movement of said member beyond said limit position, and mounting means mounting said abutment on said support for movement by the member from an initial position to a set position, said mounting means providing a frictional resistance to said movement of the member such that the force required to overcome the frictional resistance is less than the force which is capable of being applied to the abutment by the motor via the member.
Claim 11
Dependent Claim
19 words
A mechanism as claimed in Claim 8, wherein means are provided for securing said member in its set position.
Claim 12
Dependent Claim
71 words
A mechanism as claimed in claim 8 or 9, wherein the member comprises an arm which is secured to a rotary shaft angularly oscillable in a body fixed relative to the support, wherein the abutment is mounted on a plate which is angularly movable relative to the body about the axis of the shaft, and wherein friction means impart a friction resistance to movement of the plate relative to the support.
Claim 13
Dependent Claim
59 words
A mechanism as claimed in Claim 8, 9 or 10, including a switch having a body mounted on said support through the intermediary of said mounting means, wherein the abutment is provided by a part on the body of the switch, and wherein the member or a part movable therewith is engageable with an operating element of the switch.
Claim 14
Dependent Claim
52 words
A mechanism as claimed in Claim 8, 9 or 10, including an electrical limit switch for controlling said motor, said switch being mounted on said support through the intermediary of said mounting means and having an operating element disposed to be engageable by said member or a part movable with said member.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.