US3791472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle body construction
Assignee: Nissan Motor Co Ltd
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Filing: 1971-09-13
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Granted: 1974-02-12
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Expires: 1991-09-13
Abstract
Abstract An underbody structure including a pair of transversely spaced, longitudinally extending side sills, a floor panel connected at its lateral edges to the side sills, a pair of transversely spaced, longitudinally extending side rails having longitudinally rearwardly extending extensions, an engine rear mount member transversely extending between and rigidly connected to the extensions of the side rails, and a pair of bridges rigidly connecting rear end portions of the extensions to the adjacent portions of the side sills. The extensions, the engine rear mount member, torque boxes and the connecting bridges are vertically separated from the floor panel.
Inventors
- 👤 H Tatsumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:49
CPC Classifications
B; B62; B62D; B62D21/00; B62D21/02; B62D25/00; B62D25/02; B62D25/025; B62D25/20; B62D25/2009; B62D25/2036
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
184 words
An underbody structure for a motor vehicle driven by an engine comprising, in combination, a pair of transversely spaced, longitudinally extending side sills; a floor panel connected at its lateral edges to said side sills; a pair of transversely spaced, longitudinally extending front side rails; a pair of transversely spaced, longitudinally extending rear side rails, the side rails being spaced inwardly of said side sills, an extension longitudinally rearwardly extending from each of said front side rails, said extension consisting of a channel section member with outwardly directed flanges; an engine rear mount member transversely extending between and rigidly connected to said extensions; a pair of torque boxes each extending transversely inwardly from one end portion of each side sill to a front end portion of each extension and rigidly connected thereto; and connecting means rigidly connecting said extensions to said side sills, the end portions of said torque boxes being received by said outwardly directed flanges of said extensions; said extensions, said engine rear mount member, said torque boxes and said connecting means being isolated from said floor panel with a vertical space.
Claim 2
Dependent Claim
184 words
An underbody structure for a motor vehicle driven by an engine comprising, in combination, a pair of transversely spaced, longitudinally extending side sills; a floor panel connected at its lateral edges to said side sills; a pair of transversely spaced, longitudinally extending front side rails; a pair of transversely spaced, longitudinally extending rear side rails, the side rails being spaced inwardly of said side sills, an extension longitudinally rearwardly extending from each of said front side rails, said extension consisting of a channel section member with outwardly directed flanges; an engine rear mount member transversely extending between and rigidly connected to said extensions; a pair of torque boxes each extending transversely inwardly from one end portion of each side sill to a front end portion of each extension and rigidly connected thereto; and connecting means rigidly connecting said extensions to said side sills, the end portions of said torque boxes being received by said outwardly directed flanges of said extensions; said extensions, said engine rear mount member, said torque boxes and said connecting means being isolated from said floor panel with a vertical space.
Claim 3
Dependent Claim
39 words
An underbody according to claim 1, wherein said connecting means comprises a pair of spaced connecting bridges extending respectively between rear end portions of said extensions and said side sills, said connecting bridges each consisting of a U-shaped member.
Claim 4
Dependent Claim
23 words
An underbody structure according to claim 2, wherein said engine rear mount member is connected between said rear end portions of the extensions.
Claim 5
Dependent Claim
25 words
An underbody structure according to claim 3, wherein said connecting bridges extend divergently between the rear end portions of said extensions and said side sills.
Claim 6
Dependent Claim
23 words
An underbody structure according to claim 1, wherein said engine rear mount member consists of a channel section construction with downwardly directed flanges.
Claim 7
Dependent Claim
28 words
An underbody structure according to claim 1, wherein said connecting means comprises a unitary connecting bridge which transversely extends between and is rigidly connected to said side sills.
Claim 8
Dependent Claim
27 words
An underbody structure according to claim 1, wherein said extensioNs of the front side rails extend respectively to said rear side rails and are integrally connected therewith.
Claim 9
Dependent Claim
33 words
An underbody structure according to claim 6, wherein said connecting bridge consists of a channel section member with downwardly directed flanges, one of which is secured to the rearward edge of said extensions.
Claim 10
Dependent Claim
28 words
An underbody structure according to claim 6, wherein said channel section member includes means for mounting a center bearing to support a propeller shaft of said motor vehicle.
Claim 11
Dependent Claim
20 words
An underbody structure according to claim 9, further comprising a cross member transversely extending between and supported by said extensions.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |