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US3828579A Expired / Lapsed US ⏱️ 0.0 years remaining

Centrifugal mechanism

Assignee: Lucas Electrical Co Ltd
•
Filing: 1973-01-15
•
Granted: 1974-08-13
•
Expires: 1993-01-15
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Abstract

Abstract A centrifugal mechanism, for an internal combustion engine ignition distributor, includes a driven shaft and a cam shaft coupled to the driven shaft and having its axis coextensive with the driven shaft axis. Secured to the cam shaft is a first plate, and secured to the driven shaft is a second plate generally parallel with the first plate. A control weight is pivotally mounted on the second plate for movement about an axis parallel to the axis of the driven shaft and the control weight engages a cam carried by the first plate. Positioned between the first and second plates is a moulded synthetic resin spacer which maintains the first and second plates spaced apart by predetermined distance. In addition, the spacer is engaged by the control weight in the rest position of the weight.

Inventors

  • 👤 W Groom

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 06:04
CPC Classifications
F; F02; F02P; F02P5/00; F02P5/04; F02P5/05; F02P5/06

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 141 words
A centrifugal mechanism, for an ignition distributor, including a driven shaft, a cam shaft, the cam shaft being coupled to the driven shaft and having its axis co-extensive with the driven shaft axis, a first plate secured to the cam shaft, a second plate secured to the driven shaft and generally parallel with the first plate, a control weight pivotally mounted on one of the pair of plates constituted by the first plate and the second plate, for movement about an axis generally parallel to the driven shaft axis, a cam engaged by the control weight and carried by the other plate of said pair of plates, and, a moulded synthetic resin spacer maintaining the first and second plates spaced apart by a predetermined amount, the spacer also being engaged by the control weight in a rest position of the weight.
Claim 2
Dependent Claim 141 words
A centrifugal mechanism, for an ignition distributor, including a driven shaft, a cam shaft, the cam shaft being coupled to the driven shaft and having its axis co-extensive with the driven shaft axis, a first plate secured to the cam shaft, a second plate secured to the driven shaft and generally parallel with the first plate, a control weight pivotally mounted on one of the pair of plates constituted by the first plate and the second plate, for movement about an axis generally parallel to the driven shaft axis, a cam engaged by the control weight and carried by the other plate of said pair of plates, and, a moulded synthetic resin spacer maintaining the first and second plates spaced apart by a predetermined amount, the spacer also being engaged by the control weight in a rest position of the weight.
Claim 3
Dependent Claim 55 words
A centrifugal mechanism as claimed in claim 1 further including a second control weight and a second cam engaged by the second control weight, the first and second control weights being positioned diametrically opposite one another on opposite sides of the driven shaft axis and both control weights engaging the spacer in their rest position.

References Cited (Backward Citations)

US2060556A Cited
US2009935A Cited
US3045458A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-08-12 1978-02-11 1978-08-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-08-12 1982-02-11 1982-08-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-08-12 1986-02-11 1986-08-13 $7700.00 Window Closed / Lapsed

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