US3681543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition distributor with cam and cam follower lubrication means
Assignee: Robert Bosch GmbH
•
Filing: 1970-04-27
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Granted: 1972-08-01
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Expires: 1990-04-27
Abstract
Abstract A breaker lever for use in ignition systems of combustion engines has a main portion mountable at one end for pivotal movement about a predetermined first axis and provided at its opposite end with an electrical contact adapted to cooperate with an adjacent contact of the ignition system. An engagement portion of synthetic plastic material projects from the main body portion transversely of the aforementioned first axis and has an exposed engagement face which is adapted for sliding contact with a breaker cam rotating about a second axis. The engagement portion is formed with one or preferably several pockets which extend inwardly from the exposed face and which accommodate a viscous lubricant for transfer to and lubrication of the breaker cam in automatic response to sliding contact of the engagement face with the same.
Inventors
- 👤 Hubert Schratz
- 👤 Karl-Heinz Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:23
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/60; Y; Y10; Y10S; Y10S200/00; Y10S200/44; Y10T; Y10T74/00; Y10T74/21; Y10T74/2101; Y10T74/2107
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
159 words
A contact breaker assembly including a breaker lever for use in ignition systems of combustion engines, comprising a main body portion having a first end and being mountable for pivotal movement about a predetermined first axis, and a second end; an electrical contact provided on said second end and adapted for cooperation with an adjacent contact of the ignition system; an engagement portion projecting from said main body portion intermediate said ends and transversely of said first axis, said engagement portion having an exposed engagement face adapted for sliding contact with a breaker cam rotating about a recessed axis adjacent said main body portion; at least one circumferentially closed pocket formed in said engagement portion extending inwardly from and being open only at said exposed face thereof; and a body of viscous lubricant accommodated in said pocket for transfer to and lubrication of said breaker cam in automatic response to sliding contact of said engagement face with the same.
Claim 2
Dependent Claim
159 words
A contact breaker assembly including a breaker lever for use in ignition systems of combustion engines, comprising a main body portion having a first end and being mountable for pivotal movement about a predetermined first axis, and a second end; an electrical contact provided on said second end and adapted for cooperation with an adjacent contact of the ignition system; an engagement portion projecting from said main body portion intermediate said ends and transversely of said first axis, said engagement portion having an exposed engagement face adapted for sliding contact with a breaker cam rotating about a recessed axis adjacent said main body portion; at least one circumferentially closed pocket formed in said engagement portion extending inwardly from and being open only at said exposed face thereof; and a body of viscous lubricant accommodated in said pocket for transfer to and lubrication of said breaker cam in automatic response to sliding contact of said engagement face with the same.
Claim 3
Dependent Claim
61 words
A contact breaker assembly as defined in claim 1; further comprising at least one additional circumferentially closed pocket provided in said engagement portion and extending inwardly from said exposed face adjacent to but spaced from the first-mentioned pocket, said additional pocket also being open only at said exposed face; and an additional body of viscous lubricant accommodated in said additional pocket.
Claim 4
Dependent Claim
20 words
A contact breaker assembly as defined in claim 1, said pockets being spaced in axial direction of said second axis.
Claim 5
Dependent Claim
52 words
A contact breaker assembly as defined in claim 1, said exposed face having a substantially planar portion extending in longitudinal direction of said second axis, and a convex portion also extending in longitudinal direction of said second axis and following said planar portion in the direction of rotation of said breaker cam.
Claim 6
Dependent Claim
38 words
A contact breaker assembly as defined in claim 4, said exposed face further having an additional substantially planar portion, said planar portions together flanking said convex portion with respect to the direction of rotation of said breaker cam.
Claim 7
Dependent Claim
53 words
A contact breaker assembly as defined in claim 5, said pockets each comprising a section extending inwardly from said planar portion and said additional planar portion, respectively; and further comprising a pair of narrow grooves provided in said convex portion and each connecting said sections of one of saiD pockets with one another.
Claim 8
Dependent Claim
18 words
A contact breaker assembly as defined in claim 2, wherein said engagement portion is of synthetic plastic material.
Claim 9
Dependent Claim
42 words
A contact breaker assembly as defined in claim 2; further comprising a plurality of additional pockets provided in said engagement portion extending inwardly from said exposed face and accommodating viscous lubricant, all of said pockets being arranged in form of a raster.
Claim 10
Dependent Claim
27 words
A contact breaker assembly as defined in claim 5, said pockets extending in part inwardly from the respective planar portions, and in part from said convex portion.
Claim 11
Dependent Claim
40 words
A contact breaker assembly as defined in claim 9, wherein that part of said pockets which extends inwardly from said planar portions has a volumetric content greater than that part of said pockets which extends inwardly from said convex portion.
Claim 12
Dependent Claim
26 words
A contact breaker assembly as defined in claim 4, said pockets extending in part inwardly from said planar portion and in part from said convex portion.
Claim 13
Dependent Claim
40 words
A contact breaker assembly as defined in claim 11, wherein that part of said pockets which extends inwardly from said planar portion has a volumetric content greater than that part of said pockets which extends inwardly from said convex portion.
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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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |