US4758458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constructural elements of rod form
Assignee: Deutsches Zentrum für Luft- und Raumfahrt eV
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Filing: 1987-01-21
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Granted: 1988-07-19
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Expires: 2007-01-21
Abstract
Abstract The invention is concerned with a rod shaped constructional element comprising a core of foam material at least one first layer of fibers mounted on said core, said fibers extending in a direction parallel to the axis of said core at least one second layer of fibers mounted on said first layer, said second layer of fibers crossing each other at an angle to said axis; and at least one disc element disposed transversely in said core.
Inventors
- 👤 Rainer Schutze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:01
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0046; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/60; B29C53/68; B29C53/70; B29C53/80; B29C53/8008; B29C53/805; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B29C70/083; B29C70/085; B29C70/28; B29C70/40; B29C70/42; B29C70/44; B29C70/446; B29C70/50; B29C70/54; B29C70/545; B29C70/68; B29C70/86; B29C70/865; B29D12/00; F; F16; F16B; F16B7/00; F16C; F16C7/00; F16C7/02; F16C7/026; B29L; B29L2031/00; B29L2031/06; B29L2031/10; B29L2031/748; B29L2031/75; F16B2200/00; F16B2200/67; Y; Y10; Y10T; Y10T403/00; Y10T403/47; Y10T403/472; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24124; Y10T428/24174; Y10T428/29; Y10T428/2913; Y10T428/2915; Y10T428/2933; Y10T428/2938; Y10T428/2973; Y10T428/2975; Y10T74/00; Y10T74/21; Y10T74/2142
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
72 words
A rod shaped constructional element comprising: a core of foam material; at least one first layer of fibers mounted on said core, said fibers extending in a direction parallel to the axis of said core; at least one second layer of fibers mounted on said first layer, said second layer of fibers crossing each other at an angle to said axis; and at least one disc element disposed transversely in said core.
Claim 2
Dependent Claim
72 words
A rod shaped constructional element comprising: a core of foam material; at least one first layer of fibers mounted on said core, said fibers extending in a direction parallel to the axis of said core; at least one second layer of fibers mounted on said first layer, said second layer of fibers crossing each other at an angle to said axis; and at least one disc element disposed transversely in said core.
Claim 3
Dependent Claim
24 words
The constructional element of claim 1, wherein said circumference of said at least one disk element corresponds substantially to the circumference of said core.
Claim 4
Dependent Claim
29 words
The constructional element of claim 2, wherein said foam material core includes an outer braided hose adjacent to at least one said of said at least one disk element.
Claim 5
Dependent Claim
70 words
In a rod shaped constructional element having a core of foam material, at least one first layer of fibers mounted on said core and extending in a direction parallel to the axis of said core, at least one second layer of fibers mounted on said first layer and crossing each other at an angle to said axis, the improvement comprising at least one disk element disposed transversely in said core.
Claim 6
Dependent Claim
70 words
In a rod shaped constructional element having a core of foam material, at least one first layer of fibers mounted on said core and extending in a direction parallel to the axis of said core, at least one second layer of fibers mounted on said first layer and crossing each other at an angle to said axis, the improvement comprising at least one disk element disposed transversely in said core.
Claim 7
Dependent Claim
24 words
The constructional element of claim 4, wherein the circumference of said at least one disk element corresponds substantially to the circumference of said core.
Claim 8
Dependent Claim
24 words
The constructional element of claim 5, wherein said foam material core includes an outer braided hose adjacent to said at least one disk element.
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) | 1991-07-19 | 1992-01-18 | 1992-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-19 | 1996-01-18 | 1996-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-19 | 2000-01-18 | 2000-07-19 | $7700.00 | Window Closed / Lapsed |