US3719841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel speed sensors for vehicle adaptive braking systems
Assignee: Bendix Corp
•
Filing: 1971-07-02
•
Granted: 1973-03-06
•
Expires: 1991-07-02
Abstract
Abstract Wheel speed sensing means for adaptive braking systems on vehicles having rotating drive line elements supported by bearings in housings, comprising teeth on one of said rotating elements and mounting an electrical pickup device in an opening in the housing in proximity to said teeth.
Inventors
- 👤 I Ritsema
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:09
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/443; G01P3/446; G01P3/48; G01P3/481; G01P3/488; F; F16; F16C; F16C19/00; F16C19/54; F16C19/546; F16C19/547; F16C19/548; F16C41/00; F16C41/007; F16H; F16H48/00; F16H48/06; F16H48/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
162 words
In a motor vehicle having an engine, a pair of driven wheels, and means including a rotating shaft operably connecting the engine to the driven wheels: said shaft having circumferentially spaced, axially extending projections formed on the outer periphery thereof; a housing carried by said vehicle, said shaft being rotatably supported within said housing, said housing having an aperture extending through the wall of the housing to expose a portion of said circumferentially spaced projections; a member for closing said aperture, and means installing said closing member on said housing; and an electromagnetic probe carried by said closing member and disposed adjacent said projections when said closing member is installed on said housing, said probe including a pole piece and a coil surrounding said pole piece, said probe being responsive to movement of said projection past the pole piece to generate a signal in said coil, the frequency of said signal varying in response to the speed of rotation of said shaft.
Claim 2
Dependent Claim
162 words
In a motor vehicle having an engine, a pair of driven wheels, and means including a rotating shaft operably connecting the engine to the driven wheels: said shaft having circumferentially spaced, axially extending projections formed on the outer periphery thereof; a housing carried by said vehicle, said shaft being rotatably supported within said housing, said housing having an aperture extending through the wall of the housing to expose a portion of said circumferentially spaced projections; a member for closing said aperture, and means installing said closing member on said housing; and an electromagnetic probe carried by said closing member and disposed adjacent said projections when said closing member is installed on said housing, said probe including a pole piece and a coil surrounding said pole piece, said probe being responsive to movement of said projection past the pole piece to generate a signal in said coil, the frequency of said signal varying in response to the speed of rotation of said shaft.
Claim 3
Dependent Claim
162 words
In a motor vehicle having an engine, a pair of driven wheels, and means including a rotating shaft operably connecting the engine to the driven wheels: said shaft having circumferentially spaced, axially extending projections formed on the outer periphery thereof; a housing carried by said vehicle, said shaft being rotatably supported within said housing, said housing having an aperture extending through the wall of the housing to expose a portion of said circumferentially spaced projections; a member for closing said aperture, and means installing said closing member on said housing; and an electromagnetic probe carried by said closing member and disposed adjacent said projections when said closing member is installed on said housing, said probe including a pole piece and a coil surrounding said pole piece, said probe being responsive to movement of said projection past the pole piece to generate a signal in said coil, the frequency of said signal varying in response to the speed of rotation of said shaft.
Claim 4
Dependent Claim
162 words
In a motor vehicle having an engine, a pair of driven wheels, and means including a rotating shaft operably connecting the engine to the driven wheels: said shaft having circumferentially spaced, axially extending projections formed on the outer periphery thereof; a housing carried by said vehicle, said shaft being rotatably supported within said housing, said housing having an aperture extending through the wall of the housing to expose a portion of said circumferentially spaced projections; a member for closing said aperture, and means installing said closing member on said housing; and an electromagnetic probe carried by said closing member and disposed adjacent said projections when said closing member is installed on said housing, said probe including a pole piece and a coil surrounding said pole piece, said probe being responsive to movement of said projection past the pole piece to generate a signal in said coil, the frequency of said signal varying in response to the speed of rotation of said shaft.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |