US3728870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Progressively acting centrifugal regulators
Assignee: GEN MECANIQUE APPLIQUEE SIGMA
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Filing: 1971-02-16
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Granted: 1973-04-24
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Expires: 1991-02-16
Abstract
Abstract The device is for insertion between a driven rotary member and a coaxial drive rotary member for progressively varying the angular position between them as a function of the speed of the drive member. The device is useful for regulating the injection lead angle for Diesel engines. The regulator is a self-contained assembly containing centrifugally-acting weights and torsion bars which are pre-set by screw stops enabling the limiting angular positions of the weights to be adjusted and consequently the minimal speed at which the regulator comes into play and the amplitude of the relative angular displacement between the driving and driven members.
Inventors
- 👤 A Vuaille
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:23
CPC Classifications
F; F02; F02D; F02D1/00; F02D1/16; F02D1/162; F02B; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
208 words
Centrifugal regulator adapted for progressively varying the angular position of a driven rotary member with respect to a coaxial drive rotary member as a function of the rotary speed of said drive member, said regulator comprising weights arranged to pivot on said drive member around axes parallel to the axis of rotation of the regulator, said weights being provided with individual return springs, each said return spring being constituted by a torsion bar anchored at one end to the corresponding weight and at the other end to said rotary drive member and passing axially through a hollow portion of said weight, said hollow portion of each weight being cylindrical, a casing forming part of the rotary drive member and having transverse walls, two bushes borne by said transverse walls respectively of the casing, each said weight being engaged in two said bushes, the corresponding torsion bar being anchored at one end in an anchoring housing formed in one of the transverse walls and at the other end inside said cylindrical hollow portion, said driven rotary member including a hollow hub possessing external connecting means for said weights and passing outside the transverse walls of the casing through said bushes, and rotary seals sealing said hub at said walls.
Claim 2
Dependent Claim
208 words
Centrifugal regulator adapted for progressively varying the angular position of a driven rotary member with respect to a coaxial drive rotary member as a function of the rotary speed of said drive member, said regulator comprising weights arranged to pivot on said drive member around axes parallel to the axis of rotation of the regulator, said weights being provided with individual return springs, each said return spring being constituted by a torsion bar anchored at one end to the corresponding weight and at the other end to said rotary drive member and passing axially through a hollow portion of said weight, said hollow portion of each weight being cylindrical, a casing forming part of the rotary drive member and having transverse walls, two bushes borne by said transverse walls respectively of the casing, each said weight being engaged in two said bushes, the corresponding torsion bar being anchored at one end in an anchoring housing formed in one of the transverse walls and at the other end inside said cylindrical hollow portion, said driven rotary member including a hollow hub possessing external connecting means for said weights and passing outside the transverse walls of the casing through said bushes, and rotary seals sealing said hub at said walls.
Claim 3
Dependent Claim
44 words
Centrifugal regulator according to claim 1, wherein said screw stop means are constituted by two screws borne by each weight and adapted to limit the angular movement of the latter, respectively towards the axis of rotation of the regulator and away from said axis.
Claim 4
Dependent Claim
33 words
Centrifugal regulator according to claim 2, wherein the screw borne by one weight to limit its angular movement towards the axis of rotation of the regulator cooperates by abutment with the neighboring weight.
Claim 5
Dependent Claim
46 words
Centrifugal regulator according to claim 2, wherein the return spring of each weight is constituted by a torsion bar aligned with the axis of rotation of said weight and anchored by one end to the latter and by the other end to said drive rotary member.
Claim 6
Dependent Claim
46 words
Centrifugal regulator according to claim 3, wherein the return spring of each weight is constituted by a torsion bar aligned with the axis of rotation of said weight and anchored by one end to the latter and by the other end to said drive rotary member.
Claim 7
Dependent Claim
41 words
In a Diesel engine comprising a fuel injection pump, a cam-shaft of said pump, and a crankshaft, a regulator according to claim 1, interposed between said crankshaft and said cam-shaft to modify their mutual angular relationship as a function of speed.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |