Patent EP0156119A2 successfully refreshed from Google Patents.
EP0156119A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A master cylinder and vacuum brake booster
Assignee: Honeywell International Inc
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Filing: 1985-01-31
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Granted: —
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Expires: 2005-01-31
Abstract
Abstract A vacuum brake booster is provided with a front shell coupled to a master cylinder and a rear shell adapted for attachment to a vehicle fire wall. The front shell is provided with a unidirectional arcuate portion between radially inner and outer extremes in order to reduce the normal force imparted to the front shell during braking and thereby reduce deflection.
Inventors
- 👤 Lawrence R. Myers
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 12:46
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/24; B60T13/46; B60T13/52; B60T13/565; B60T13/567
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
190 words
A master cylinder and vacuum brake booster wherein a rear shell (16) for the booster is disposed adjacent a vehicle fire wall (18) and a front shell (30) for the booster is adapted to carry the master cylinder (10), the booster being pressure responsive to generate an input force to assist operation of the master cylinder during braking, the master cylinder including a flange (80) adjacent the front shell and cooperating with a bolt (14) or the like to secure the master cylinder (10) to the front shell (30), characterized in that said front shell (30) extends from a radial inner portion (44) to an axially-extending radial outer portion (40) to define a substantially unidirectional and substantially frusto-conical profile (42) from said inner portion to said outer portion, said master cylinder flange (76) including a substantially tapered surface (84) matching said profile (42) and said bolt defining a longitudinal axis which intersects a longitudinal axis for said master cylinder and vacuum brake booster when said bolt secures said master cylinder to said front shell whereby said front shell (30) uniformly distributes reaction forces over said front shell (30) during braking.
Claim 2
Dependent Claim
190 words
A master cylinder and vacuum brake booster wherein a rear shell (16) for the booster is disposed adjacent a vehicle fire wall (18) and a front shell (30) for the booster is adapted to carry the master cylinder (10), the booster being pressure responsive to generate an input force to assist operation of the master cylinder during braking, the master cylinder including a flange (80) adjacent the front shell and cooperating with a bolt (14) or the like to secure the master cylinder (10) to the front shell (30), characterized in that said front shell (30) extends from a radial inner portion (44) to an axially-extending radial outer portion (40) to define a substantially unidirectional and substantially frusto-conical profile (42) from said inner portion to said outer portion, said master cylinder flange (76) including a substantially tapered surface (84) matching said profile (42) and said bolt defining a longitudinal axis which intersects a longitudinal axis for said master cylinder and vacuum brake booster when said bolt secures said master cylinder to said front shell whereby said front shell (30) uniformly distributes reaction forces over said front shell (30) during braking.
Claim 3
Dependent Claim
31 words
The master cylinder and vacuum brake booster of Claim 1 in which said bolt (14) secures said master cylinder to said front shell (30) in the absence of a reinforcement plate.
Claim 4
Dependent Claim
25 words
The master cylinder and vacuum brake booster of Claim 1 in which said flange (76) is provided with a slot (80) receiving said bolt (14).
Claim 5
Dependent Claim
30 words
The master cylinder and vacuum brake booster of Claim 1 in which said unidirectional frusto-conical profile (42) is arcuate with a concavity facing outwardly relative to said vacuum brake booster.
Claim 6
Dependent Claim
38 words
The master cylinder and vacuum brake booster of Claim 1 in which said radial inner portion includes an axially extending leg cooperating with said profile adjacent said radial inner profile to form an angle B of about 60°.
Claim 7
Dependent Claim
28 words
The master cylinder and vacuum brake booster of Claim 1 in which said front shell is stamped from thin metal with a thickness equal to about .030 inches.
Claim 8
Dependent Claim
66 words
The master cylinder and vacuum brake booster of Claim 6 in which said bolt (14) includes a head engageable with one side (86) of said front shell (30) and said master cylinder flange is engageable with another side (84) of said front shell whereby said thin metal for said front shell (30) is supported between said head and said flange in the absence of further parts.
References Cited (Backward Citations)
No citation records indexed.
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