US3947712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency transmitter for signaling the slippage of vehicle wheels
Assignee: Daimler Benz AG
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Filing: 1972-01-19
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Granted: 1976-03-30
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Expires: 1992-01-19
Abstract
Abstract A frequency transmitter combined with a differential gear for the transmission of signals to control the slippage of wheels of motor vehicles, which consists of a rotating toothed ring member secured at the circumference of each output shaft of the differential gear, cooperating with a stationary toothed disc that is arranged in the bearing cover of the differential gear between the bearing for the spur bevel gear and a retaining ring or the like providing a seal with respect to the outside.
Inventors
- 👤 Manfred H. Burckhardt
- 👤 Walter Lutze
- 👤 Paul Schwerdt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:13
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/42; G01P3/44; G01P3/443; B; B60; B60T; B60T8/00; B60T8/32; B60T8/321; B60T8/329; G01P3/48; G01P3/481; G01P3/488
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
119 words
A frequency transmitter combined with a differential gear for the transmission of signals to control the slippage of wheels of motor vehicles, which includes two mutually cooperating toothed means of which one toothed means is rotatably arranged whereas the other does not rotate, and with one of the toothed means adapted to be magnetized, characterized in that the rotating toothed means is secured at the circumference of each output shaft of the differential gear, said rotating toothed means cooperating with a fixed toothed means which is arranged in a bearing cover means of the differential gear between a bearing for a spur bevel gear housing and a retaining ring means providing an oil seal with respect to the outside.
Claim 2
Dependent Claim
119 words
A frequency transmitter combined with a differential gear for the transmission of signals to control the slippage of wheels of motor vehicles, which includes two mutually cooperating toothed means of which one toothed means is rotatably arranged whereas the other does not rotate, and with one of the toothed means adapted to be magnetized, characterized in that the rotating toothed means is secured at the circumference of each output shaft of the differential gear, said rotating toothed means cooperating with a fixed toothed means which is arranged in a bearing cover means of the differential gear between a bearing for a spur bevel gear housing and a retaining ring means providing an oil seal with respect to the outside.
Claim 3
Dependent Claim
43 words
A frequency transmitter according to claim 1, characterized in that the fixed toothed means consists of a U-shaped ring open toward the inside which is formed by a disc-shaped armature with teeth, a spacer sleeve and a disc member closing the magnetic circuit.
Claim 4
Dependent Claim
19 words
A frequency transmitter according to claim 2, characterized in that said ring accommodates on the inside thereof a winding.
Claim 5
Dependent Claim
18 words
A frequency transmitter according to claim 3, characterized in that said winding is devoid of a winding body.
Claim 6
Dependent Claim
50 words
A frequency transmitter according to claim 3, characterized in that the spacer sleeve includes a longitudinal slot through which are extended the connecting wires of the winding, and in that an inclined bore in the bearing cover means serves for the further extension of the connecting wires toward the outside.
Claim 7
Dependent Claim
40 words
A frequency transmitter according to claim 5, characterized in that a sleeve means is mounted on the output shaft with a force fit, the retaining ring means running on said sleeve means and said sleeve means closing the magnetic circuit.
Claim 8
Dependent Claim
41 words
A frequency transmitter according to claim 6, characterized in that a further ring means is mounted on the output shaft with force fit, which forms the teeth and is disposed in the same plane normally to the axis as the armature.
Claim 9
Dependent Claim
25 words
A frequency transmitter according to claim 7, characterized in that the sleeve means has a larger diameter than the further ring means with the teeth.
Claim 10
Dependent Claim
29 words
A frequency transmitter according to claim 8, characterized in that the disc member is provided with uniformly distributed grooves at the inner circumference thereof for the passage of oil.
Claim 11
Dependent Claim
40 words
A frequency transmitter according to claim 1, characterized in that a sleeve means is mounted on the output shaft with a force fit, the retaining ring means running on said sleeve means and said sleeve means closing the magnetic circuit.
Claim 12
Dependent Claim
41 words
A frequency transmitter according to claim 10, characterized in that a further ring means is mounted on the output shaft with force fit, which forms the teeth and is disposed in the same plane normally to the axis as the armature.
Claim 13
Dependent Claim
25 words
A frequency transmitter according to claim 11, characterized in that the sleeve means has a larger diameter than the further ring means with the teeth.
Claim 14
Dependent Claim
29 words
A frequency transmitter according to claim 2, characterized in that the disc member is provided with uniformly distributed grooves at the inner circumference thereof for the passage of oil.
Claim 15
Dependent Claim
41 words
A frequency transmitter according to claim 1, characterized in that a further ring means is mounted on the output shaft with force fit, which forms the teeth and is disposed in the same plane normally to the axis as the armature.
References Cited (Backward Citations)
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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) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |