US3914943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Return manifold for hydraulic brake actuator
Assignee: Bendix Corp
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Filing: 1974-06-20
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Granted: 1975-10-28
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Expires: 1994-06-20
Abstract
Abstract A unique fluid storage structure for a hydraulic brake actuator is disclosed. The actuator includes a housing having radially extending apertures through the wall thereof to communicate fluid into a bore defined within the housing. Tubular extensions are cast integral with the housing and circumscribe each of the apertures. A threaded plug is screwed into each of the aforementioned extensions, and one end of some of the plugs is recessed to define a cavity which receives a tilt valve which controls communication through the apertures between the fluid storage structure and the bore. The fluid storage structure further includes a molded manifold including a tubular member having bosses projecting radially with respect thereto. The cross section of the bosses is complementary to the cross section of the opposite end of the plugs, and the distance between the bosses on the manifold is complementary to the distance between the extensions on the housing, so that, when the manifold is installed on the housing, the opposite ends of the plugs are received within the bosses on the manifold. A band is crimped around the outer circumferential surface of each of the bosses on the manifold to hold them in sealing engagement with the opposite ends of the plugs.
Inventors
- 👤 Richard L Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:26
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/16; B60T11/22
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
162 words
In a hydraulic brake actuator: a housing defining a bore therewithin; apertures extending through the housing for communicating fluid into said bore; and a vessel carried by said housing, said vessel holding separated fluid quantities to be communicated through corresponding apertures, said vessel including tubular extensions carried by said housing, one of said tubular extensions circumscribing each of said apertures, and a manifold comprising a tubular member having tubular bosses extending therefrom for each of said tubular extensions, each of said tubular bosses having a cross section complementary to the cross section of a corresponding tubular extension, one end of each boss defining an opening equal to the cross-sectional area of the boss for receiving a corresponding extension, the distance between said bosses being substantially equal to the distance between said extensions so that each of said extensions are connected to a corresponding boss when said manifold is installed on said housing, and means sealingly fastening said bosses to their corresponding extensions.
Claim 2
Dependent Claim
162 words
In a hydraulic brake actuator: a housing defining a bore therewithin; apertures extending through the housing for communicating fluid into said bore; and a vessel carried by said housing, said vessel holding separated fluid quantities to be communicated through corresponding apertures, said vessel including tubular extensions carried by said housing, one of said tubular extensions circumscribing each of said apertures, and a manifold comprising a tubular member having tubular bosses extending therefrom for each of said tubular extensions, each of said tubular bosses having a cross section complementary to the cross section of a corresponding tubular extension, one end of each boss defining an opening equal to the cross-sectional area of the boss for receiving a corresponding extension, the distance between said bosses being substantially equal to the distance between said extensions so that each of said extensions are connected to a corresponding boss when said manifold is installed on said housing, and means sealingly fastening said bosses to their corresponding extensions.
Claim 3
Dependent Claim
53 words
The invention of claim 1: said extensions including a tubular boss extending from said housing and circumscribing a corresponding aperture, and a tubular plug, one end of said plug being received within the corresponding extension on the housing, the other end of said plug being connected to the corresponding boss on the manifold.
Claim 4
Dependent Claim
44 words
The invention of claim 2: the wall of each manifold boss on the manifold slidably engaging a corresponding wall of each of said plugs; said fastening means including a detent on one of said walls received within a complementary recess on the other wall.
Claim 5
Dependent Claim
50 words
The invention of claim 3: said other end of each of said plugs being received within a corresponding manifold boss; said fastening means including a band clamped around the outer circumferential surface of each manifold boss to urge the latter into sealing engagement with the wall of its corresponding plug.
Claim 6
Dependent Claim
33 words
The invention of claim 2: said one end of at least one of said plugs including a recessed portion, and valve means in said recessed portion to control communication through the corresponding aperture.
Claim 7
Dependent Claim
19 words
The invention of claim 5; and a piston slidably mounted in said bore, said piston operating said valve means.
Claim 8
Dependent Claim
32 words
The invention of claim 2: valve means located between at least one of said plugs and the housing; and a piston slidably mounted in said bore, said piston operating each valve means.
Claim 9
Dependent Claim
35 words
The invention of claim 1: said fastening means including a band clamped around the outer circumferential surface of each manifold boss to urge the latter into sealing engagement with the wall of its corresponding extension.
Claim 10
Dependent Claim
36 words
The invention of claim 8: said extensions including a tubular boss extending from said housing and circumscribing a corresponding aperture, said fastening means clamping the boss on the manifold with a corresponding boss on the housing.
Claim 11
Dependent Claim
39 words
The invention of claim 1: each of said extensions including a plug fastened to the housing and cooperating with the latter to define a cavity therebetween communicating with a corresponding boss on said manifold and with a corresponding aperture.
References Cited (Backward Citations)
US3520136A
Cited
US3555822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |