Patent US3716121A successfully refreshed from Google Patents.
US3716121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antiskid sensor
Assignee: TDK Micronas GmbH
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Filing: 1970-05-27
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Granted: 1973-02-13
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Expires: 1990-05-27
Abstract
Abstract A sensor for vehicle antiskid systems, the sensor having a stationary reading head in direct contact with a rotating data carrier. The carrier may be a flexible edge mounted on the disc of a disc brake system or it may be a rigid carrier mounted on some other member rotating with the wheel such as the inside of the wheel hub. The data carrier has equally spaced variations in some characteristic to which the sensor responds such as magnetic spots, variable electrical resistance, or perforations which can be read by the sensing head.
Inventors
- 👤 H Frigger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:56
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/321; B60T8/329; G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/443; G01P3/446; G01P3/48; G01P3/481; G01P3/487; F; F16; F16C; F16C19/00; F16C19/54; F16C19/546; F16C19/547; F16C19/548; F16C41/00; F16C41/007
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
170 words
An antiskid sensor for determining the speed of a wheel to be braked comprising: a brake disc connected for rotation with said wheel about a given axis, and a disc brake caliper disposed relative to said disc for braking thereof; an annular flexible tape having a first surface portion immediately adjacent one edge thereof and a second surface portion including the remainder of said tape, said first portion being secured to said disc and said second portion extending from said disc towards an adjacent inner portion of said caliper, said second portion having disposed thereon equally spaced variations of a predetermined characteristic along its length; and a stationary reading member secured to said caliper in direct contact with said second portion to sense said variations and generate a signal proportional to wheel speed; said second portion being free of a rigid supporting member to enable flexing of said second portion to compensate for distortions of said disc and maintain said direct contact between said second portion and said reading member.
Claim 2
Dependent Claim
170 words
An antiskid sensor for determining the speed of a wheel to be braked comprising: a brake disc connected for rotation with said wheel about a given axis, and a disc brake caliper disposed relative to said disc for braking thereof; an annular flexible tape having a first surface portion immediately adjacent one edge thereof and a second surface portion including the remainder of said tape, said first portion being secured to said disc and said second portion extending from said disc towards an adjacent inner portion of said caliper, said second portion having disposed thereon equally spaced variations of a predetermined characteristic along its length; and a stationary reading member secured to said caliper in direct contact with said second portion to sense said variations and generate a signal proportional to wheel speed; said second portion being free of a rigid supporting member to enable flexing of said second portion to compensate for distortions of said disc and maintain said direct contact between said second portion and said reading member.
Claim 3
Dependent Claim
170 words
An antiskid sensor for determining the speed of a wheel to be braked comprising: a brake disc connected for rotation with said wheel about a given axis, and a disc brake caliper disposed relative to said disc for braking thereof; an annular flexible tape having a first surface portion immediately adjacent one edge thereof and a second surface portion including the remainder of said tape, said first portion being secured to said disc and said second portion extending from said disc towards an adjacent inner portion of said caliper, said second portion having disposed thereon equally spaced variations of a predetermined characteristic along its length; and a stationary reading member secured to said caliper in direct contact with said second portion to sense said variations and generate a signal proportional to wheel speed; said second portion being free of a rigid supporting member to enable flexing of said second portion to compensate for distortions of said disc and maintain said direct contact between said second portion and said reading member.
Claim 4
Dependent Claim
170 words
An antiskid sensor for determining the speed of a wheel to be braked comprising: a brake disc connected for rotation with said wheel about a given axis, and a disc brake caliper disposed relative to said disc for braking thereof; an annular flexible tape having a first surface portion immediately adjacent one edge thereof and a second surface portion including the remainder of said tape, said first portion being secured to said disc and said second portion extending from said disc towards an adjacent inner portion of said caliper, said second portion having disposed thereon equally spaced variations of a predetermined characteristic along its length; and a stationary reading member secured to said caliper in direct contact with said second portion to sense said variations and generate a signal proportional to wheel speed; said second portion being free of a rigid supporting member to enable flexing of said second portion to compensate for distortions of said disc and maintain said direct contact between said second portion and said reading member.
Claim 5
Dependent Claim
24 words
A sensor according to claim 1, wherein said second portion has disposed thereon equally spaced magnetic marks which are sensed by said reading member.
Claim 6
Dependent Claim
21 words
A sensor according to claim 1, wherein said second portion includes equally spaced perforations which are sensed by said reading member.
Claim 7
Dependent Claim
25 words
A sensor according to claim 1, wherein said second portion has disposed thereon equally spaced electrical resistance variations which are sensed by said reading member.
Claim 8
Dependent Claim
81 words
A sensor according to claim 1, wherein said first portion is secured to the periphery of said disc, said second portion extending radially from said periphery of said disc and transverse to said given axis; said adjacent inner portion of said caliper is a surface of said caliper parallel to said given axis; and said reading member is secured to one inner surface of said caliper transverse of said given axis in direct contact with one surface of said second portion.
Claim 9
Dependent Claim
55 words
A sensor according to claim 5, further including an elastic pressure medium disposed in the other surface of said caliper transverse to said given axis in direct contact with the other surface of said second portion to maintain said second portion in said direct contact with said reading member even during distortions of said disc.
Claim 10
Dependent Claim
15 words
A sensor according to claim 6, wherein said elastic pressure medium is a felt pad.
Claim 11
Dependent Claim
100 words
A sensor according to claim 1, wherein said first portion is secured to a surface of said disc parallel to said given axis, said second portion extending transverse to said disc and parallel to said given axis; said adjacent inner portion of said caliper is one surface of said caliper transverse to said given axis, said one surface of said caliper having secured thereto a component disposed in transverse relation to said one surface of said caliper adjacent said second portion; and said reading member is secured to said component in direct contact with one surface of said second portion.
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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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |