Patent US4127210A successfully refreshed from Google Patents.
US4127210A
Expired / Lapsed
US
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Master cylinder reservoir
Assignee: Old Carco LLC
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Filing: 1977-03-16
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Granted: 1978-11-28
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Expires: 1997-03-16
Abstract
Abstract Master cylinder reservoir comprising a housing having two adjacent reservoir sections separated by a transversely extending double wall partition having windows offset laterally from one another with a space between the walls.
Inventors
- 👤 Arthur G. Sabat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:57
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/26
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
144 words
In a reservoir for the master cylinder of a vehicle hydraulic brake system, said reservoir having a lower fluid carrying portion, an upper cover portion secured to said lower fluid carrying portion and a set of spaced dividers extending substantially transversely from one side wall of said reservoir to the other side wall thereof forming two reservoir sections, said set of dividers comprising a first and second wall, said dividers having an opening in each wall offset from the opening in the other wall; each of said walls having an elongated transversely extending central portion, first and second intermediate portions extending perpendicularly with respect to opposite ends of said central portion, and first and second end portions extending transversely between said intermediate portions and each of said side walls to thereby provide a tortuous path for the fluid transfer between the two reservoir sections.
Claim 2
Dependent Claim
144 words
In a reservoir for the master cylinder of a vehicle hydraulic brake system, said reservoir having a lower fluid carrying portion, an upper cover portion secured to said lower fluid carrying portion and a set of spaced dividers extending substantially transversely from one side wall of said reservoir to the other side wall thereof forming two reservoir sections, said set of dividers comprising a first and second wall, said dividers having an opening in each wall offset from the opening in the other wall; each of said walls having an elongated transversely extending central portion, first and second intermediate portions extending perpendicularly with respect to opposite ends of said central portion, and first and second end portions extending transversely between said intermediate portions and each of said side walls to thereby provide a tortuous path for the fluid transfer between the two reservoir sections.
Claim 3
Dependent Claim
36 words
In a reservoir as set forth in claim 1 wherein said openings are in one end portion adjacent one side wall of said reservoir and another end portion adjacent the other side wall of said reservoir.
Claim 4
Dependent Claim
43 words
In a reservoir as set forth in claim 2 wherein said walls and openings are located to provide a fluid retaining pocket between said walls even though the level of fluid in one reservoir section is higher than the opening through said wall.
Claim 5
Dependent Claim
63 words
In a reservoir as set forth in claim 3 where said dividers further comprise: first and second partitions extending from said lower fluid carrying portion towards said upper cover portion, and third and fourth partitions extending from said upper cover portion towards said lower fluid carrying portion, and engaging said first and second partitions so as to form said first and second walls.
References Cited (Backward Citations)
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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) | 1981-11-27 | 1982-05-29 | 1982-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-27 | 1986-05-29 | 1986-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-27 | 1990-05-29 | 1990-11-28 | $7700.00 | Window Closed / Lapsed |