US4493749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite vehicle frames and method of manufacturing composite vehicle frames
Assignee: Individual
•
Filing: 1982-09-30
•
Granted: 1985-01-15
•
Expires: 2002-09-30
Abstract
Abstract My invention constitutes a new method of manufacture of vehicle frames utilizing a multiplicity of tubes wrapped with a resin impregnated fiber material.
Inventors
- 👤 David C. Brezina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:22
CPC Classifications
B; B62; B62K; B62K19/00; B62K19/02; B62K19/16; B62K3/00; B62K3/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
94 words
A method of constructing structural frameworks in which a rigid tubular sub-frame comprising a series of round cross-section tubes, in which the structural elements are comprised of a multiplicity of tubes, the main structural members comprising at least two parallel tubes of differing diameter, and the secondary structural members comprising at least two nearly parallel tubes, wherein said sub-frame provides for the application of resin impregnated fiber sheet by wrapping said sheet around the tubular, members of said subframe at an angle of less than 90° relative to the axis of said tubular member.
Claim 2
Independent Claim
94 words
A method of constructing structural frameworks in which a rigid tubular sub-frame comprising a series of round cross-section tubes, in which the structural elements are comprised of a multiplicity of tubes, the main structural members comprising at least two parallel tubes of differing diameter, and the secondary structural members comprising at least two nearly parallel tubes, wherein said sub-frame provides for the application of resin impregnated fiber sheet by wrapping said sheet around the tubular, members of said subframe at an angle of less than 90° relative to the axis of said tubular member.
Claim 3
Dependent Claim
23 words
In a method as described in claim 1, said method utilizing the continuous application of said sheet around the junctions between said tubing.
Claim 4
Dependent Claim
20 words
In a method as described in claim 1, said method being followed by the etching or removal of the sub-frame.
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) | 1988-01-15 | 1988-07-16 | 1989-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-15 | 1992-07-16 | 1993-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-15 | 1996-07-16 | 1997-01-15 | $7700.00 | Window Closed / Lapsed |