US3813098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prestressed elements
Assignee: Individual
•
Filing: 1971-07-07
•
Granted: 1974-05-28
•
Expires: 1991-07-07
Abstract
Abstract A stressed element having a relatively rigid, imcompressible body combined with one or more internal or external tensioning strands, each comprising a multiplicity of synthetic organic fibers such as nylon, polyester, polypropylene or the like, having a high recoverable stretch, the tensioning strands being maintained in intimate association with the rigid body and in highly elongated tensioned condition to compress the body and so stress the element.
Inventors
- 👤 H Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:04
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/08; F16L9/10; F16L9/12; F16L9/121; Y; Y10; Y10S; Y10S138/00; Y10S138/05; Y10S273/00; Y10S273/05; Y10S273/06; Y10S273/07; Y10S273/09; Y10S273/12; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
15 words
A hockey stick as claimed in claim 1 wherein: said hockey stick is of wood.
Claim 2
Dependent Claim
36 words
A hockey stick as claimed in claim 1 wherein: said fibrous material in position around said outer surface of said body is elongated to a length at least 5 percent greater than its stable relaxed length.
Claim 3
Dependent Claim
167 words
A bat comprising: a rigid body having a smooth outer surface, a plurality of longitudinally extending fibrous strands on at least a portion of the outer surface of said body a fibrous material capable of being elongated to a length greater than its stable relaxed length and having a tendency to recover a substantial portion of such elongation, wrapped with its adjacent turns in contact with one another transversely around the handle portion of The outer surface of said body over said fibrous strands, said fibrous material in position around said outer surface of said body over said fibrous strands being elongated to a length greater than its stable relaxed length, and means fixing said fibrous material in its elongated condition around said body with said fibrous material after a substantial period of time being in tension in an amount of at least 10 percent of the ultimate breaking strength of said fibrous material and in an amount of at least 50,000 p.s.i. on a fiber basis.
Claim 4
Dependent Claim
13 words
A bat as claimed in claim 4 wherein: said body is of wood.
Claim 5
Dependent Claim
32 words
A bat as claimed in claim 4 wherein: said fibrous material in position around said outer surface if elongated to a length at least 5 percent greater than its stable relaxed length.
Claim 6
Dependent Claim
169 words
A mast structure or the like comprising a rigid tubular body having a smooth outer surface, a plurality of longitudinally extending fibrous strands on at least a portion of the outer surface of said body a fibrous material capable of being elongated to a length greater than its stable relaxed length and having a tendency to recover a substantial portion of such elongation, wrapped with its adjacent turns in contact with one another transversely around the outer surface of said body over said fibrous strands, said fibrous material in position around said outer surface of said body and over said fibrous strands being elongated to a length greater than its stable relaxed length, and means fixing said fibrous material in its elongated condition around said body with said fibrous material after a substantial period of time being in tension in an amount of at least 10 percent of the ultimate breaking strength of said fibrous material and in an amount of at least 50,000 p.s.i. on a fiber basis.
Claim 7
Dependent Claim
36 words
A mast structure or the like as claimed in claim 7 wherein: said fibrous material in position around said outer surface is elongated to a length at least 5 percent greater than its stable relaxed length.
Claim 8
Dependent Claim
35 words
A hockey stick as claimed in claim 1, wherein said strands include a fiberglass resin composite having a plurality of longitudinally extending fibrous strands on said body, said fibrous material being wrapped over said composite.
Claim 9
Dependent Claim
34 words
A bat as claimed in claim 4, wherein said strands include a fiberglass resin composite having a plurality of longitudinally extending fibrous strands on said body, said fibrous material being wrapped over said composite.
Claim 10
Dependent Claim
37 words
A mast structure or the like as claimed in claim 7, wherein said strands include a fiberglass resin composite having a plurality of longitudinally extending strands on said body, said fibrous material being wrapped over said composite.
References Cited (Backward Citations)
US26314A
Cited
US3470051A
Cited
US3458194A
Cited
US3607510A
Cited
US3598410A
Cited
US3533203A
Cited
US3631897A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |