Patent US4257643A successfully refreshed from Google Patents.
US4257643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Upper streamlining apparatus for the cab of a heavy transport vehicle
Assignee: Societe Detudes et de Realisations Automobiles
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Filing: 1979-03-29
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Granted: 1981-03-24
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Expires: 1999-03-29
Abstract
Abstract A streamlining apparatus for the cab of a heavy transport vehicle has a transverse section smaller than that of the body of the load transported and comprises an air-flow deflector formed by a front part and two lateral rear parts. The apparatus further comprises an element adapted to engage the roof of the cab and which is connected to the front part of the deflector, this element comprising lateral parts, which, longitudinally, substantially conform to an upper surface of the cab, and a front part which extends to at least the level of the front transverse roof edge of the cab, with respect to both the downward and forward extents of the cab.
Inventors
- 👤 Robert Choulet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:50
CPC Classifications
B; B62; B62D; B62D35/00; B62D35/001; B62D35/005; Y; Y02; Y02T; Y02T10/00; Y02T10/80; Y02T10/82
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
139 words
A streamlining apparatus for the cab of a heavy transport vehicle, said cab having a roof, an upper roof surface, a front transverse edge, side edges and a transverse section having a width smaller than that of the body of a load being transported by said cab, said apparatus comprising an air-flow deflector having a front part and two lateral rear parts, and an element adapted to engage the roof of the cab and connected to the front part of said deflector, said element comprising lateral parts which are adapted to extend laterally over the cab between said deflector front part and said edges and have substantially curved upper surfaces and a front part which is adapted to extend to at least said front transverse roof edge, both with respect to the forward and downward extent of the cab.
Claim 2
Dependent Claim
139 words
A streamlining apparatus for the cab of a heavy transport vehicle, said cab having a roof, an upper roof surface, a front transverse edge, side edges and a transverse section having a width smaller than that of the body of a load being transported by said cab, said apparatus comprising an air-flow deflector having a front part and two lateral rear parts, and an element adapted to engage the roof of the cab and connected to the front part of said deflector, said element comprising lateral parts which are adapted to extend laterally over the cab between said deflector front part and said edges and have substantially curved upper surfaces and a front part which is adapted to extend to at least said front transverse roof edge, both with respect to the forward and downward extent of the cab.
Claim 3
Dependent Claim
21 words
A streamlining apparatus as claimed in claim 1, wherein the lateral parts of said element have a substantially semi-elliptic front profile.
Claim 4
Dependent Claim
27 words
A streamlining apparatus as claimed in claim 1, wherein said element is connected to the front part of said deflector by a connection of the "Karman" type.
Claim 5
Dependent Claim
48 words
A streamlining apparatus as claimed in claim 1, wherein said cab includes lateral surfaces and wherein the two lateral rear parts of the deflector are adapted to extend vertically along the lateral surfaces of the cab and have a height substantially equal to the height of said load.
Claim 6
Dependent Claim
45 words
A streamlining apparatus as claimed in claim 4, wherein the front part of the deflector is adapted to extend laterally up to said rear parts and includes a top surface having a height substantially equal to the height of the upper surface of said load.
Claim 7
Dependent Claim
20 words
A streamlining apparatus as claimed in claim 1, wherein the front part of said deflector has a substantially elliptical form.
Claim 8
Dependent Claim
54 words
A streamlining apparatus as claimed in claim 1, wherein the upper edge of the front part of the deflector progressively increases from the center of said front part towards the lateral parts and from the front towards the rear of the deflector substantially to the level of the upper longitudinal surface of said load.
Claim 9
Dependent Claim
31 words
A streamlining apparatus as claimed in claim 1, wherein said lateral rear deflector parts include vertical rear trailing edges which are inclined with respect to the median plane of the cab.
Claim 10
Dependent Claim
29 words
A streamlining apparatus as claimed in claim 1 wherein said front part of said element is adapted to tangentially extend along the front transverse roof edge of the cab.
Claim 11
Dependent Claim
40 words
A streamlining apparatus as claimed in claim 9, wherein each of said lateral parts of said element has an upper longitudinal profile which is adapted to extend over the front surface of the cab along a regular and continuous curve.
Claim 12
Dependent Claim
54 words
A streamlining apparatus as claimed in claim 1, wherein said element is adapted to be disposed slightly above the roof of the cab and has a front edge which is adapted to extend beyond the front transverse roof edge of the cab, both with respect to the forward and downward extent of the cab.
Claim 13
Dependent Claim
34 words
A streamlining apparatus as claimed in claim 11, further comprising two panels adapted to extend downwardly along two vertical front edges of the cab, and being spaced by a short distance from said edges.
Claim 14
Dependent Claim
29 words
A streamlining apparatus as claimed in claim 11, wherein sealing plates are disposed between the roof of the cab and inner surfaces of the lateral parts of said element.
Claim 15
Dependent Claim
23 words
A streamlining apparatus as claimed in claim 1, said lateral parts of said element having longitudinal edges which are covered with longitudinal tapers.
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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) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |