Patent US4583366A successfully refreshed from Google Patents.
US4583366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum brake booster
Assignee: Aisin Corp
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Filing: 1982-09-29
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Granted: 1986-04-22
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Expires: 2002-09-29
Abstract
Abstract A vacuum booster having a master cylinder and which includes a body having a bent portion, a reinforcing member connected to the body and having a flange member extending therefrom and a mechanism for installing the master cylinder onto the body as reinforced by the reinforcing member wherein a bending center of the bent portion of the body is located further inside the body than the location of the bending center of such flange of the reinforcing member.
Inventors
- 👤 Kaoru Tsubouchi
- 👤 Michiharu Nishii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:43
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/24; B60T13/46; B60T13/52; B60T13/565; B60T13/567
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
262 words
A vacuum booster for a vehicle having a master cylinder, comprising a body having a bent portion; a reinforcing member spaced from and welded to said body and including a bent flange member extending therefrom and a connection portion interconnecting said reinforcing member and said bent flange member; and means for installing said master cylinder onto said body as reinforced by said reinforcing member such that a load transmitted from said master cylinder is in turn transmitted to a body of said vehicle via said reinforcing member wherein; said bent portion is located at an axial end wall of said body and is in engagement with said master cylinder and which further comprises a circular flat surface portion located at an inner radial portion thereof and a substantially conically shaped portion located at an outer radial portion thereof; said master cylinder is fixed to an exterior portion of said circular flat surface portion by said means for installing said master cylinder onto said body; said connecting portion contacts said conically shaped portion of said bent portion; said reinforcing member is engaged with an interior portion of said circular flat surface portion; said bent flange member is formed on an outer peripheral portion of said reinforcing member and extends in an axial direction from said reinforcing member away from said end wall of said body; and a center of radius of said bent portion is located radially within a center of bending radius of said flange member and an outer diameter of said reinforcing member is greater than that of said bent portion.
Claim 2
Dependent Claim
262 words
A vacuum booster for a vehicle having a master cylinder, comprising a body having a bent portion; a reinforcing member spaced from and welded to said body and including a bent flange member extending therefrom and a connection portion interconnecting said reinforcing member and said bent flange member; and means for installing said master cylinder onto said body as reinforced by said reinforcing member such that a load transmitted from said master cylinder is in turn transmitted to a body of said vehicle via said reinforcing member wherein; said bent portion is located at an axial end wall of said body and is in engagement with said master cylinder and which further comprises a circular flat surface portion located at an inner radial portion thereof and a substantially conically shaped portion located at an outer radial portion thereof; said master cylinder is fixed to an exterior portion of said circular flat surface portion by said means for installing said master cylinder onto said body; said connecting portion contacts said conically shaped portion of said bent portion; said reinforcing member is engaged with an interior portion of said circular flat surface portion; said bent flange member is formed on an outer peripheral portion of said reinforcing member and extends in an axial direction from said reinforcing member away from said end wall of said body; and a center of radius of said bent portion is located radially within a center of bending radius of said flange member and an outer diameter of said reinforcing member is greater than that of said bent portion.
Claim 3
Dependent Claim
41 words
A vacuum booster as set forth in claim 1, wherein said means for installing said master cylinder onto said body further comprises a bolt having a head portion with an annular projection and wherein said annular projection engages said reinforcing member.
Claim 4
Dependent Claim
25 words
A vacuum booster as set forth in claim 1 or 2, wherein said body further comprises a projection extending therefrom for engaging said reinforcing member.
Claim 5
Dependent Claim
90 words
A vacuum booster as set forth in claim 1, wherein said means for installing said master cylinder onto said body further comprises a bolt having a head portion with an annular projection, wherein said annular projection engages said reinforcing member, said body further comprises a projection extending therefrom for engaging said reinforcing member and wherein said means for installing said master cylinder onto said body further comprises means for unitarily connecting said annular projection of said head portion of said bolt, said reinforcing member and said projection of said body.
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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) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |