US4435242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elongate structure
Assignee: Bristol Composite Materials Engineering Ltd
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Filing: 1982-11-17
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Granted: 1984-03-06
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Expires: 2002-11-17
Abstract
Abstract A method of fabricating a tapered elongate structure in which a polygonal tube or channel cross section member is cut lengthwise and at an angle to its longitudinal axis to produce a plurality of similar segments of tapered shape. The segments are then arranged in an abutting or overlapping relationship and bonded together to form the tapered elongate structure.
Inventors
- 👤 John P. McNulty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:47
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/50; B29C66/51; B29C66/54; B29C53/00; B29C53/36; B29C53/38; B29C53/385; B29C65/00; B29C66/543; B29C66/70; B29C66/72; B29C66/721; B29C66/7212; B29C69/00; B29C69/001; B29C2793/00; B29C48/00; B29C48/001; B29C48/0022; B29C48/03; B29C48/07; B29C48/09; B29C48/12; B29C48/15; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/114; B29C66/1142; B29C66/7214; B29C66/72141; B29K; B29K2105/00; B29K2105/06; B29L; B29L2031/00; B29L2031/766; B29L2031/772; B29L2031/7724; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1075; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
101 words
A method of fabricating a tapered elongate structure comprising the steps of (a) producing a longitudinal member in the form of a tube of even number sided polygonal uniform cross section or of a circular cross-section, or a channel cross section member, (b) cutting the member lengthwise and at an angle to the longitudinal axis so as to produce a plurality of similar segments of tapered shape, (c) arranging the segments in an abutting or overlapping relationship so as to form a tapered configuration and (d) bonding the segments at the abutment or overlap areas to form the tapered elongate structure.
Claim 2
Independent Claim
101 words
A method of fabricating a tapered elongate structure comprising the steps of (a) producing a longitudinal member in the form of a tube of even number sided polygonal uniform cross section or of a circular cross-section, or a channel cross section member, (b) cutting the member lengthwise and at an angle to the longitudinal axis so as to produce a plurality of similar segments of tapered shape, (c) arranging the segments in an abutting or overlapping relationship so as to form a tapered configuration and (d) bonding the segments at the abutment or overlap areas to form the tapered elongate structure.
Claim 3
Dependent Claim
33 words
A method according to claim 1 in which the cut is made to form segments comprising a pair of non-planar similar wings about a longitudinal crease, the wings making an obtuse included angle.
Claim 4
Dependent Claim
24 words
A method according to claim 1 or claim 2 in which more than one cut is made on each face of the longitudinal member.
Claim 5
Dependent Claim
29 words
A method according to claim 1 in which a further set of segments are arranged adjacent to and are bonded to the first set of abutting or overlapping segments.
Claim 6
Dependent Claim
24 words
A method according to claim 1 in which the tube of even numbered polygonal uniform cross section has a square or hexagonal cross section.
Claim 7
Dependent Claim
16 words
A method according to claim 1 in which the longitudinal member comprises a resin/fibre composite tube.
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) | 1987-03-06 | 1987-09-05 | 1988-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-06 | 1991-09-05 | 1992-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-06 | 1995-09-05 | 1996-03-06 | $7700.00 | Window Closed / Lapsed |