Patent US3713344A successfully refreshed from Google Patents.
US3713344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal governor
Assignee: UK Secretary of State for Defence
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Filing: 1970-11-13
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Granted: 1973-01-30
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Expires: 1990-11-13
Abstract
Abstract The invention concerns a centrifugal governor comprising a rotatable driving member, a plurality of equi-angularly spaced apart flyweights which have driving connections with the said driving member so as to be rotated by the latter, at least portions of the flyweights being movable radially outwardly under centrifugal force, a rotatable and axially movable driven member having driving connections with the flyweights so as to be rotated thereby and so as to be moved axially thereby in a given axial direction when the flyweights move radially outwardly, the driving and driven members being coaxial, and means for urging the driven member in the opposite axial direction, all the said driving connections comprising relatively non-slidable parts which roll over each other during axial movement of the driven member in the said given axial direction.
Inventors
- 👤 C Johnson
- 👤 J Whitmarsh
- 👤 K Basford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:59
CPC Classifications
G; G05; G05D; G05D13/00; G05D13/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
227 words
A centrifugal governor comprising: a rotatable driving member having planar surfaces thereon; a rotatable and axially movable driven member mounted coaxially with respect to said driving member and having planar surfaces thereon, said planar surfaces of said driving member being normal to the planar surfaces of said driven member and said planar surfaces of said driven member being normal to the driven member''s axis; means for urging said driven member in a predetermined axial direction; and a plurality of equi-angularly spaced apart flyweights, each of said flyweights being drivingly connected to both said driving and driven members by flexible strips, each flexible strip extending over and being disposed between a curved surface of the flyweight and cooperating with one of the planar surfaces of said respective driving and driven members, said flyweights being movable by certifugal force radially outwardly and causing each curved surface to roll over the respective planar surface with the respective flexible strip interposed therebetween to thereby move said driven member axially against said urging means, the curved surfaces of the flyweights which roll over said planar surfaces on said driven member having a circular cross section and the curved surfaces of said flyweights which roll over the planar surfaces of said driving member having an involute cross section whose pitch circle is of the same radius as that of said circular cross section.
Claim 2
Dependent Claim
227 words
A centrifugal governor comprising: a rotatable driving member having planar surfaces thereon; a rotatable and axially movable driven member mounted coaxially with respect to said driving member and having planar surfaces thereon, said planar surfaces of said driving member being normal to the planar surfaces of said driven member and said planar surfaces of said driven member being normal to the driven member''s axis; means for urging said driven member in a predetermined axial direction; and a plurality of equi-angularly spaced apart flyweights, each of said flyweights being drivingly connected to both said driving and driven members by flexible strips, each flexible strip extending over and being disposed between a curved surface of the flyweight and cooperating with one of the planar surfaces of said respective driving and driven members, said flyweights being movable by certifugal force radially outwardly and causing each curved surface to roll over the respective planar surface with the respective flexible strip interposed therebetween to thereby move said driven member axially against said urging means, the curved surfaces of the flyweights which roll over said planar surfaces on said driven member having a circular cross section and the curved surfaces of said flyweights which roll over the planar surfaces of said driving member having an involute cross section whose pitch circle is of the same radius as that of said circular cross section.
Claim 3
Dependent Claim
227 words
A centrifugal governor comprising: a rotatable driving member having planar surfaces thereon; a rotatable and axially movable driven member mounted coaxially with respect to said driving member and having planar surfaces thereon, said planar surfaces of said driving member being normal to the planar surfaces of said driven member and said planar surfaces of said driven member being normal to the driven member''s axis; means for urging said driven member in a predetermined axial direction; and a plurality of equi-angularly spaced apart flyweights, each of said flyweights being drivingly connected to both said driving and driven members by flexible strips, each flexible strip extending over and being disposed between a curved surface of the flyweight and cooperating with one of the planar surfaces of said respective driving and driven members, said flyweights being movable by certifugal force radially outwardly and causing each curved surface to roll over the respective planar surface with the respective flexible strip interposed therebetween to thereby move said driven member axially against said urging means, the curved surfaces of the flyweights which roll over said planar surfaces on said driven member having a circular cross section and the curved surfaces of said flyweights which roll over the planar surfaces of said driving member having an involute cross section whose pitch circle is of the same radius as that of said circular cross section.
Claim 4
Dependent Claim
227 words
A centrifugal governor comprising: a rotatable driving member having planar surfaces thereon; a rotatable and axially movable driven member mounted coaxially with respect to said driving member and having planar surfaces thereon, said planar surfaces of said driving member being normal to the planar surfaces of said driven member and said planar surfaces of said driven member being normal to the driven member''s axis; means for urging said driven member in a predetermined axial direction; and a plurality of equi-angularly spaced apart flyweights, each of said flyweights being drivingly connected to both said driving and driven members by flexible strips, each flexible strip extending over and being disposed between a curved surface of the flyweight and cooperating with one of the planar surfaces of said respective driving and driven members, said flyweights being movable by certifugal force radially outwardly and causing each curved surface to roll over the respective planar surface with the respective flexible strip interposed therebetween to thereby move said driven member axially against said urging means, the curved surfaces of the flyweights which roll over said planar surfaces on said driven member having a circular cross section and the curved surfaces of said flyweights which roll over the planar surfaces of said driving member having an involute cross section whose pitch circle is of the same radius as that of said circular cross section.
Claim 5
Dependent Claim
47 words
A governor as claimed in claim 1 in which the driving member is a casing which is mounted concentrically about the driven member and which is provided internally with its respective planar surfaces, means being provided for limiting relative non-axial movement between the casing and driven member.
Claim 6
Dependent Claim
51 words
A governor as claimed in claim 2 in which the driven member has a plurality of equi-angularly spaced apart radial arms, one for each flyweight, the radially outermost portion of each radial arm being mounted within a respective slot in the said casing to permit only limited radial and circumferential movement.
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |