US4919474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automobile front body structure
Assignee: Mazda Motor Corp
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Filing: 1989-04-27
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Granted: 1990-04-24
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Expires: 2009-04-27
Abstract
Abstract A front body structure for an automobile body having a front wheel apron constituting a side wall of an engine room and supporting a suspension comprises a front frame extending in a lengthwise direction of the front body and connected to a lower portion of the front wheel apron. The front wheel apron is provided with side extension laterially overhanging therefrom and extending in the lengthwise direction between which an intermediate space is formed. A stiffener is disposed in the intermediate space and secured to the side extensions and has a rigidity higher than the front wheel apron. The front wheel apron is accompanied with a reinforcement which extends a the lengthwise direction of the front body over the upper portion of the front wheel apron and is connected to the side extension and the stiffener to form a closed cross-section in cooperation therewith.
Inventors
- 👤 Ryoichi Adachi
- 👤 Shyuji Muraoka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:31
CPC Classifications
B; B62; B62D; B62D25/00; B62D25/08; B62D25/088; B62D25/082; B62D25/084; B60; B60G; B60G2204/00; B60G2204/40; B60G2204/44; B60G2204/4404
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
162 words
A front body structure of an automobile body having a front wheel apron constituting a side wall of an engine room, comprising: front frame means extending in a lengthwise direction of said front body structure and connected to a lower portion of said front wheel apron; side extension means laterally overhanging from an upper portion of said front wheel apron and extending in said lengthwise direction, said side extension means being formed therein with an intermediate space adjacent to a portion of said front wheel apron where a suspension assembly is supported; stiffener means disposed in said space of said side extension means and secured to said side extension means, said stiffener means having a rigidity higher than said wheel apron; and reinforcement means extending in a lengthwise direction of said front body structure over said upper portion of said front wheel apron and connected to said side extension means and said stiffener means to form a closed cross-section in cooperation therewith.
Claim 2
Dependent Claim
162 words
A front body structure of an automobile body having a front wheel apron constituting a side wall of an engine room, comprising: front frame means extending in a lengthwise direction of said front body structure and connected to a lower portion of said front wheel apron; side extension means laterally overhanging from an upper portion of said front wheel apron and extending in said lengthwise direction, said side extension means being formed therein with an intermediate space adjacent to a portion of said front wheel apron where a suspension assembly is supported; stiffener means disposed in said space of said side extension means and secured to said side extension means, said stiffener means having a rigidity higher than said wheel apron; and reinforcement means extending in a lengthwise direction of said front body structure over said upper portion of said front wheel apron and connected to said side extension means and said stiffener means to form a closed cross-section in cooperation therewith.
Claim 3
Dependent Claim
31 words
A front body structure as defined in claim 1, wherein said stiffener means is made of a plate like member having a thickness greater than that of said front wheel apron.
Claim 4
Dependent Claim
19 words
A front body structure as defined in claim 1, wherein said reinforcement means is a generally U-shaped channel member.
Claim 5
Dependent Claim
48 words
A front body structure as defined in claim 1, wherein said side extension means consists of front and rear flanges laterally bent from front and rear upper portions of said front wheel apron spaced apart from each other in said lengthwise direction to provide said intermediate space therebetween.
Claim 6
Dependent Claim
49 words
A front body structure as defined in claim 4, wherein said stiffener means is a plate like member having a thickness greater than these of said front and rear flanges and is disposed to have an upper surface thereof even with upper surfaces of said front and rear flanges.
Claim 7
Dependent Claim
35 words
A front body structure as defined in claim 5, wherein said plate like member is integrally formed with front and rear stepped extensions which are secured to under surface of said front and rear flanges.
References Cited (Backward Citations)
JPS5537081A
Cited
US4429914A
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US4408794A
Cited
US4542934A
Cited
US4560198A
Cited
US4687217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-23 | 1993-10-23 | 1994-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-23 | 1997-10-23 | 1998-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-23 | 2001-10-23 | 2002-04-24 | $7700.00 | Window Closed / Lapsed |