Patent US4294072A successfully refreshed from Google Patents.
US4294072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Master cylinder and reservoir assemblies
Assignee: ZF International UK Ltd
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Filing: 1979-09-28
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Granted: 1981-10-13
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Expires: 1999-09-28
Abstract
Abstract A master cylinder and reservoir assembly comprises a reservoir (2) having a depending foot portion (13). For ease of assembly of the reservoir on the master cylinder (1), the foot portion (13) has opposed laterally extending projections which slide in complementary longitudinal recesses (12) at the top of the master cylinder. The reservoir may be held in place by friction, or some arrangement for positively retaining the reservoir may be provided.
Inventors
- 👤 Derek J. Flynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:11
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/16; B60T11/20; B60T13/00; B60T13/10; B60T13/24; B60T13/46; B60T13/52; B60T13/565
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
140 words
A master cylinder and reservoir assembly comprising an elongate master cylinder having a longitudinal axis and longitudinally extending recesses thereon, a reservoir having cooperating projections complementary to said recesses, said projections and recesses being so arranged as to permit interconnection of said reservoir and master cylinder by relative sliding movement in a direction generally parallel to said longitudinal axis of said master cylinder, said projections being formed on a foot portion of the reservoir, said foot portion having an aperture therethrough which cooperates with an aperture in the master cylinder wall to create a flow path between the reservoir and master cylinder, said foot portion having an extension and a downwardly extending lug on said extension engageable with a complementary hole in said master cylinder to locate and retain said reservoir in a desired predetermined position on said master cylinder.
Claim 2
Dependent Claim
140 words
A master cylinder and reservoir assembly comprising an elongate master cylinder having a longitudinal axis and longitudinally extending recesses thereon, a reservoir having cooperating projections complementary to said recesses, said projections and recesses being so arranged as to permit interconnection of said reservoir and master cylinder by relative sliding movement in a direction generally parallel to said longitudinal axis of said master cylinder, said projections being formed on a foot portion of the reservoir, said foot portion having an aperture therethrough which cooperates with an aperture in the master cylinder wall to create a flow path between the reservoir and master cylinder, said foot portion having an extension and a downwardly extending lug on said extension engageable with a complementary hole in said master cylinder to locate and retain said reservoir in a desired predetermined position on said master cylinder.
Claim 3
Dependent Claim
19 words
An assembly according to claim 1, wherein the projections extend over only part of the length of the reservoir.
Claim 4
Dependent Claim
33 words
An assembly according to claim 1, wherein the base of the foot portion is flat and co-operates with a flat surface on the master cylinder, a seal between said surfaces surrounding the apertures.
Claim 5
Dependent Claim
27 words
An assembly according to claim 1, wherein the extension is inherently resilient and flexible to permit said longitudinal sliding assembly of the reservoir on the master cylinder.
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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) | 1984-10-12 | 1985-04-13 | 1985-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-12 | 1989-04-13 | 1989-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-12 | 1993-04-13 | 1993-10-13 | $7700.00 | Window Closed / Lapsed |