Patent US4442989A successfully refreshed from Google Patents.
US4442989A
Expired / Lapsed
US
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Cable bearer system
Assignee: Individual
•
Filing: 1979-04-18
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Granted: 1984-04-17
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Expires: 1999-04-18
Abstract
Abstract For a cable bearing system, preferably I-shaped, bearers arranged vertically at intervals, one behind the other and several brackets fixed horizontally at the sides to the bearers are used, whereby the bearers have, at one or both ends, holding plates which can be fixed in position, to obtain an earthquake-proof design, particularly for use in nuclear power stations, at least two neighboring bearers are braced together to form a stiff elementary unit of the bearing structure, and the holding plates are designed to be fixed in position with the intermediate insertion of spring elements, effective in all directions, and absorber elements, effective in one direction, whereby the spring and absorber elements, retain their function in a minimum range of 268° K. to 470° K. and the bearing layers have a load capacity of 5 kp/cm 2 (approx. 0.5 n/mm 2 ) at 473° K.
Inventors
- 👤 Bernd Hartmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:35
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/26; H02G3/263; H02G3/02; H02G3/04; H02G3/0456
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
112 words
Cable bearer system for rendering earthquake-proof nuclear power stations and, the like consisting of I-shaped bearers arranged vertically at intervals rearwardly of one another in the linear direction of the cable system and a plurality of brackets fixed to the bearers of the bearer system and which extend horizontally from the bearer sides, the bearers having holding plates at their ends which can be fastened to an adjacent building construction and at least two adjacent bearers being hung and braced together to form a rigid unit so that the holding plates are fastened to the building construction by intermediate spring elements which are omnidirectionally effective and absorber elements which are unidirectionally effective.
Claim 2
Dependent Claim
112 words
Cable bearer system for rendering earthquake-proof nuclear power stations and, the like consisting of I-shaped bearers arranged vertically at intervals rearwardly of one another in the linear direction of the cable system and a plurality of brackets fixed to the bearers of the bearer system and which extend horizontally from the bearer sides, the bearers having holding plates at their ends which can be fastened to an adjacent building construction and at least two adjacent bearers being hung and braced together to form a rigid unit so that the holding plates are fastened to the building construction by intermediate spring elements which are omnidirectionally effective and absorber elements which are unidirectionally effective.
Claim 3
Dependent Claim
29 words
Cable bearer system as in claim 1 wherein the spring and absorber elements are designed to function in a minimum range of at least 268° K. to 470° K.
Claim 4
Dependent Claim
30 words
Cable bearer system as in claim 1 wherein at least one layer of rubber is fastened between each holding plate and the building construction and serves as a spring element.
Claim 5
Dependent Claim
13 words
Cable bearer system as in claim 1 wherein the spring element is elastomeric.
Claim 6
Dependent Claim
51 words
Cable bearer system as in claim 4 wherein the elastomeric element is a chloroprene rubber or a rubber with a fluoride content which can be subjected to continual loads at temperatures ranging from 268° K. to 398° K. and can be subjected to a load at 458° K. for 1 hour.
Claim 7
Dependent Claim
17 words
Cable bearer system as in claim 1 wherein the elements have an absorption of at least 10%.
Claim 8
Dependent Claim
35 words
Cable bearer system as in claim 1 wherein a steel plate provided with externally extending threaded bolts are vulcanized to the surfaces of the elastomeric elements and to the holding plates of the building construction.
Claim 9
Dependent Claim
14 words
Cable bearer system as in claim 7 wherein each holding plate has two layers.
Claim 10
Dependent Claim
29 words
Cable bearing system as in claim 1 wherein the layer elements have a bearing strength of 5 kp .cm 2 (approx. 0.5 N /mm 2 ) at 473° K.
Claim 11
Dependent Claim
22 words
Cable bearer system as in claim 1 wherein the adjacent bearers are braced together with flat bars to form an elementary unit.
Claim 12
Dependent Claim
24 words
Cable bearer system as in claim 10 wherein outer elementary units of an array of bearers have the bearers of the last unit stiffened.
Claim 13
Dependent Claim
24 words
Cable bearer system as in claim 10 wherein a plurality of elementary units are joined at intervals to each other to form a grid.
Claim 14
Dependent Claim
23 words
Cable bearer system as in claim 1 wherein the elements are fastened indirectly to the building construction by an intervening intermediate shaped bar.
Claim 15
Dependent Claim
24 words
Cable bearer system as in claim 13 wherein the shaped bar is fixed to the building ceiling and is formed in an open C-shape.
Claim 16
Dependent Claim
37 words
Cable bearer system as in claim 1 wherein the holding plates of the bearers are fastened at their base only and have a large surface area and triangular reinforcements fitted between the holding plates and the bearers.
Claim 17
Dependent Claim
27 words
Cable bearer system as in claim 1 wherein angular bearing connecting members interconnecting the bearers and have holes at their crossing points to receive high-tensile fastening screws.
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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) | 1987-04-17 | 1987-10-17 | 1988-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-17 | 1991-10-17 | 1992-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-17 | 1995-10-17 | 1996-04-17 | $7700.00 | Window Closed / Lapsed |