US3630347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skid-sensing devices
Assignee: Individual
•
Filing: 1970-10-16
•
Granted: 1971-12-28
•
Expires: 1990-10-16
Abstract
Abstract A skid-sensing device for a vehicle antiskid braking system, comprising an annular flywheel mounted for rotation within an annular housing, the housing being arranged to extend coaxially around a rotatable drive shaft of a vehicle for rotation therewith, and sensing means responsive to overrunning of the flywheel, of which the following is a specification.
Inventors
- 👤 John Walter Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:55
CPC Classifications
H; H01; H01H; H01H36/00; H01H36/0006; H01H35/00; H01H35/06; H01H35/10
Claims Analysis
Total Claims: 44
Claim 1
Independent Claim
149 words
A skid-sensing device for vehicle antiskid braking system comprising a hollow annular rotatable housing having a direct driveable attachment for mounting thereof to a rotatable drive transmission member of a vehicle, a plurality of spaced-apart roller members individually mounted for rotatable movement on said housing, an annular flywheel disposed within said housing and mounted for rotational movement on said roller members, said flywheel and housing being arranged for attachment as a unit to said transmission, means providing a driveable connection between the respective roller members and said flywheel to drive said flywheel synchronously with said housing during normal vehicle motion and to provide for continuous overrun of said flywheel relatively to said housing in response to deceleration of said transmission member in excess of a predetermined value, and sensing means disposed within said housing and responsive to the overrunning of said housing by said flywheel to effect antiskid operation.
Claim 2
Dependent Claim
149 words
A skid-sensing device for vehicle antiskid braking system comprising a hollow annular rotatable housing having a direct driveable attachment for mounting thereof to a rotatable drive transmission member of a vehicle, a plurality of spaced-apart roller members individually mounted for rotatable movement on said housing, an annular flywheel disposed within said housing and mounted for rotational movement on said roller members, said flywheel and housing being arranged for attachment as a unit to said transmission, means providing a driveable connection between the respective roller members and said flywheel to drive said flywheel synchronously with said housing during normal vehicle motion and to provide for continuous overrun of said flywheel relatively to said housing in response to deceleration of said transmission member in excess of a predetermined value, and sensing means disposed within said housing and responsive to the overrunning of said housing by said flywheel to effect antiskid operation.
Claim 3
Dependent Claim
45 words
A skid-sensing device according to claim 1 wherein the roller members are rotatably mounted on spindles, the spindles being mounted with their axes parallel to the axis of the housing at angularly spaced-apart positions in a common pitch circle around the axis of the housing.
Claim 4
Dependent Claim
18 words
A skid-sensing device according to claim 1 wherein the roller members engage the inner periphery of the flywheel.
Claim 5
Dependent Claim
18 words
A skid-sensing device according to claim 1 wherein the roller members engage the outer periphery of the flywheel.
Claim 6
Dependent Claim
11 words
A skid-sensing device according to claim 1 having three roller members.
Claim 7
Dependent Claim
14 words
A skid-sensing device according to claim 1 wherein the roller members are gear wheels.
Claim 8
Dependent Claim
13 words
A skid-sensing device according to claim 1 wherein the roller members are pulleys.
Claim 9
Dependent Claim
25 words
A skid-sensing device according to claim 1 wherein the sensing means associated with the flywheel comprises a cam mechanism arranged to actuate a signalling device.
Claim 10
Dependent Claim
111 words
A skid-sensing device according to claim 8 wherein the roller members are rotatably mounted on spindles which are mounted with their axes parallel to the axis of the housing at angularly spaced-apart positions in a common pitch circle around the axis of the housing, a plurality of cam mechanisms being provided, each cam mechanism being associated with a respective roller member and comprising first and second cylindrical cam members mounted for limited rotation relative to each other on the spindle on which their respective roller member is mounted, the confronting faces of the cam members being formed into cam surfaces, and a return spring biassing the cam members towards each other.
Claim 11
Dependent Claim
24 words
A skid-sensing device according to claim 9 wherein the roller member associated with each cam mecHanism is rotatably mounted on the first cam member.
Claim 12
Dependent Claim
40 words
A skid-sensing device according to claim 10 comprising a coiled clutch spring wound round abutting cylindrical portions of the roller member and the first cam member to provide a drive connection between the roller member and the first cam member.
Claim 13
Dependent Claim
28 words
A skid-sensing device according to claim 9 comprising a coiled torsion spring coupled to the cam members to provide torsion to resist relative rotation of the cam members.
Claim 14
Dependent Claim
59 words
A skid-sensing device according to claim 9 comprising a peg to limit the angular movement of the first cam member relative to its associated spindle, the peg extending through clearance holes formed in the spindle and located at its ends in bores formed in the cam member, and wherein the second cam member is non-rotatable relative to the spindle.
Claim 15
Dependent Claim
80 words
A skid-sensing device according to claim 13 wherein the spindles are hollow and each contain a coiled torsion spring coupled to the cam members to provide tension to draw the cam members towards one another and torsion to resist relative rotation of the cam members, the torsion spring being associated at one end with the peg and at the other end with a support which is adjustable to vary the torsional forces exerted by the spring on the cam members.
Claim 16
Dependent Claim
38 words
A skid-sensing device according to claim 8 comprising a movable switching member, and an associated switch, the cam mechanism being arranged to move the switching member in a switch-actuating direction when the flywheel is in the overrunning condition.
Claim 17
Dependent Claim
27 words
A skid-sensing device according to claim 1 wherein the sensing means associated with the flywheel comprises a thrust mechanism including a friction member engageable with the flywheel.
Claim 18
Dependent Claim
50 words
A skid-sensing device according to claim 16 comprising a wedge member associated with the housing and rotatable therewith, the wedge member having an inclined surface, the device being arranged so that the friction member is wedged between the said inclined surface and the flywheel during angular acceleration of the housing.
Claim 19
Dependent Claim
70 words
A skid-sensing device according to claim 16 comprising an axially movable member and a link member, the link member being pivotally connected at one end to the friction member and at its other end to the axially movable member, whereby angular movement of the friction member with respect to the axially movable member in the normal direction of rotation of the flywheel causes axial movement of the axially movable member.
Claim 20
Dependent Claim
97 words
A skid-sensing device according to claim 18 wherein the axially movable member is in the form of an annular flange, said friction member being in the form of an annular flange, and mounted for circumferential movement within said housing, and a link member operatively connected between said axially movable member and friction member to draw such members together when the flywheel is in an overrunning condition during rotation of the flywheel in the direction corresponding to normal forward motion of the vehicle, and return spring means for biassing said axially movable member away from said friction member.
Claim 21
Dependent Claim
23 words
A skid-sensing device according to claim 19 wherein the friction member comprises pads of friction material spring-loaded into frictional engagement with the flywheel.
Claim 22
Dependent Claim
51 words
A skid-sensing device according to claim 19 wherein the link member is connected to the friction member and to the axially movable member by part-spherical head portions formed at each end of the link member and seating in corresponding part-spherical seats formed in the friction member and the axially movable member.
Claim 23
Dependent Claim
101 words
A skid-sensing device according to claim 18 wherein the axially movable member is in the form of an annular flange, the friction member also being in the form of an annular flange and being mounted for circumferential movement within the housing, the friction member being arranged to cause the link member to thrust the axially movable member away from the friction member when the flywheel is in the ovErrunning condition during rotation of the flywheel in the direction corresponding to normal forward motion of the vehicle, a return spring being provided to bias the axially movable member towards the friction member.
Claim 24
Dependent Claim
31 words
A skid-sensing device according to claim 22 comprising a stop to limit angular movement of the link member relative to the thrust member in the direction of rotation of the flywheel.
Claim 25
Dependent Claim
42 words
A skid-sensing device according to claim 18 wherein the axially movable member comprises a switching member and an associated switch, the thrust mechanism being arranged to move the switching member in a switch-actuating direction when the flywheel is in the overrunning condition.
Claim 26
Dependent Claim
47 words
A skid-sensing device according to claim 15 wherein the switch associated with the movable switching member comprises a reed switch including a pair of contacts which are responsive to the field strength of, and to the direction of, a magnetic field in which the switch is placed.
Claim 27
Dependent Claim
47 words
A skid-sensing device according to claim 24 wherein the switch associated with the movable switching member comprises a reed switch including a pair of contacts which are responsive to the field strength of, and to the direction of, a magnetic field in which the switch is placed.
Claim 28
Dependent Claim
50 words
A skid-sensing device according to claim 25 wherein the contacts of the reed switch are normally open and are arranged to be closed when the flywheel is in the overrunning condition by the magnetic field in which the switch lies after movement of the switching member in the switch-actuating direction.
Claim 29
Dependent Claim
41 words
A skid-sensing device according to claim 26 wherein the switching member is movable in an axial direction with respect to the housing, and comprises an annular magnet which is coaxial with the housing, rotatable therewith and polarized in a radial direction.
Claim 30
Dependent Claim
41 words
A skid-sensing device according to claim 26 wherein the switching member is movable in an axial direction with respect to the housing and comprises an annular magnet which is coaxial with the housing, rotatable therewith, and polarized in an axial direction.
Claim 31
Dependent Claim
105 words
A skid-sensing device according to claim 26 wherein the switch associated with the movable switching member comprises a magnet mounted in the region of the reed switch and aligned so that its uninterrupted magnetic field causes the switch contacts to close, the switch member comprising a ferromagnetic material and being normally positioned to capture a portion of the magnetic field of the magnet and allow the switch contacts to remain open, the switching member moving when the flywheel is in the overrunning condition, to a position such that the field strength of the magnet at the reed switch is sufficient to close the contacts thereof.
Claim 32
Dependent Claim
109 words
A skid-sensing device according to claim 26 wherein the switch associated with the movable switching member comprises two magnets mounted in the region of the reed switch so that their magnetic fields are in opposition, the magnets being arranged so that their uninterrupted combined field strength acting on the reed switch contacts is insufficient to cause the contacts to close, the switching member comprising a ferromagnetic material and being positioned so that when it is moved in the switch-actuating direction it captures a portion of the magnetic field of one of the magnets thereby allowing the magnetic field of the other magnet to cause the switch contacts to close.
Claim 33
Dependent Claim
29 words
A skid-sensing device according to claim 17 wherein the switch associated with the movable switching member is arranged to be actuated by direct mechanical contact with the switching member.
Claim 34
Dependent Claim
29 words
A skid-sensing device according to claim 26 wherein the switch associated with the movable switching member is arranged to be actuated by direct mechanical contact with the switching member.
Claim 35
Dependent Claim
71 words
A skid-sensing device according to claim 17 wherein the switch associated with the movable switching member comprises a jet arranged to allow a steady flow of fluid therethrough, and pressure-sensing means mounted in association with the jet and arranged to respond to interruption of deflection of the jet, the switching member being arranged to interrupt or deflect the flow of fluid from the jet when moved in the said switch-actuating direction.
Claim 36
Dependent Claim
71 words
A skid-sensing device according to claim 26 wherein the switch associated with the movable switching member comprises a jet arranged to allow a steady flow of fluid therethrough, and pressure-sensing means mounted in association with the jet and arranged to respond to interruption of deflection of the jet, the switching member being arranged to interrupt or deflect the flow of fluid from the jet when moved in the said switch-actuating direction.
Claim 37
Dependent Claim
69 words
A skid-sensing device according to claim 17 wherein the switch associated with the movable switching member comprises a radiation source and radiation-sensing means mounted in association with the radiation source and arranged to respond to interruption reflection or refraction of the radiation emitted by the source, the switching member being arranged to interrupt, reflect or refract the radiation emitted by the source when moved in the said switch-actuating direction.
Claim 38
Dependent Claim
69 words
A skid-sensing device according to claim 36 wherein the switch associated with the movable switching member comprises a radiation source and radiation-sensing means mounted in association with the radiation source and arranged to respond to interruption reflection or refraction of the radiation emitted by the source, the switching member being arranged to interrupt, reflect or refract the radiation emitted by the source when moved in the said switch-actuating direction.
Claim 39
Dependent Claim
161 words
A skid-sensing device according to claim 1 wherein the means associated with the flywheel and arranged to respond to an overrunning condition thereof comprises a first annular disc mounted coaxially with the housing for rotation therewith and arranged to be angularly movable relative to the housing when the flywheel is in the said overrunning condition, a first series of magnets secured to the first annular disc, a second annular disc, the second annular disc being secured to the housing coaxially therewith for rotation with the housing, a second series of magnets, the second series of magnets being secured to the second annular disc, and a reed switch mounted so that the magnetic fields of the two series of magnets pass through the switch, the magnets and the switch being arranged so that during rotation of the housing, angular movement of the first annular disc relative to the second annular disc causes the contacts of the switch to open or to close.
Claim 40
Dependent Claim
97 words
A skid-sensing device according to claim 38 wherein the roller members are rotatably mounted on spindles which are mounted at spaced-apart positions in the housing, a plurality of cam members being provided, each cam member being mounted on the spindle of a respective roller member, a drive connection being provided to transmit torque to each cam member from its respective roller member when the flywheel is in the overrunning condition, and a drive member being provided for each cam member to transmit drive to the first annular disc to effect angular movement thereof relative to the housing.
Claim 41
Dependent Claim
145 words
A skid-sensing device comprising a housing, means for mounting said housing on a rotatable member which rotates synchronously with a vehicle wheel, an annular flywheel disposed within said housing, a plurality of spaced-apart roller members carried by said housing and each having means for rotatable mounting thereof, means forming a drivable mounting connection between a respective one of said roller members and said annular flywheel to provide continuous rotation of said flywheel and overrunning of said flywheel relatively to said roller members providing said drivable mounting connection, axially movable means angularly movable responsively to overriding of said roller members by said flywheel from a first position to a second position, and sensing means responsive to the axiaL movement of said angularly movable means during differential speed between said flywheel and said housing to effect antiskid operation until the flywheel and casing have attained synchronous speed.
Claim 42
Dependent Claim
145 words
A skid-sensing device comprising a housing, means for mounting said housing on a rotatable member which rotates synchronously with a vehicle wheel, an annular flywheel disposed within said housing, a plurality of spaced-apart roller members carried by said housing and each having means for rotatable mounting thereof, means forming a drivable mounting connection between a respective one of said roller members and said annular flywheel to provide continuous rotation of said flywheel and overrunning of said flywheel relatively to said roller members providing said drivable mounting connection, axially movable means angularly movable responsively to overriding of said roller members by said flywheel from a first position to a second position, and sensing means responsive to the axiaL movement of said angularly movable means during differential speed between said flywheel and said housing to effect antiskid operation until the flywheel and casing have attained synchronous speed.
Claim 43
Dependent Claim
42 words
A skid-sensing device in accordance with claim 40 wherein said housing is in the form of a hollow annular body, adapted to be attached as a unit together with said flywheel to a rotatable drive shaft of a vehicle for rotation therewith.
Claim 44
Dependent Claim
97 words
A skid-sensing device according to claim 16 wherein the axially movable member is in the form of an annular flange, said friction member being in the form of an annular flange, and mounted for circumferential movement within said housing, and a link member operatively connected between said axially movable member and friction member to draw such members together when the flywheel is in an overrunning condition during rotation of the flywheel in the direction corresponding to normal forward motion of the vehicle, and return spring means for biasing said axially movable member away from said friction 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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |