US3801088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spacer grid respectively plate spring for a bunch of cylindrical elements taking part in a heat-exchanging-process
Assignee: Reactor Centrum Nederland
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Filing: 1971-04-16
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Granted: 1974-04-02
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Expires: 1991-04-16
Abstract
Abstract A plate spring for use in a spacer grid for holding a rod-like element against lateral displacement, by exerting a pressure force on the element in a direction normal to the plane of the plate spring, said plate spring having a longitudinal dimension and a transverse dimension within said plane and when in the relaxed state having a bow-shaped bend in one direction in its major middle part for engagement with the rod-like element said spring further having between said bow-shaped bend and each end of the spring an arch extending in the same direction as said bend, at least one end of the spring being formed in at least two longitudinally extending branched parts which are transversely spaced apart.
Inventors
- 👤 G Piepers
- 👤 L Vons
- 👤 E Ljbrink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:50
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/007; F28F9/013; F28F9/0135; G; G21; G21C; G21C3/00; G21C3/30; G21C3/32; G21C3/34; G21C3/356; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
120 words
A plate spring for use in a spacer grid for holding a rodlike element against lateral displacement, by exerting a pressure force on the element in a direction normal to the plane of the plate spring, said plate spring having a longitudinal dimension and a transverse dimension within said plane and when in the relaxed state having a bow-shaped bend in one direction in its major middle part for engagement with the rod-like element, said spring further having between said bow-shaPed bend and each end of the spring an arch extending in the same direction as said bend, at least one end of the spring being formed in at least two longitudinally extending branched parts which are transversely spaced apart.
Claim 2
Dependent Claim
120 words
A plate spring for use in a spacer grid for holding a rodlike element against lateral displacement, by exerting a pressure force on the element in a direction normal to the plane of the plate spring, said plate spring having a longitudinal dimension and a transverse dimension within said plane and when in the relaxed state having a bow-shaped bend in one direction in its major middle part for engagement with the rod-like element, said spring further having between said bow-shaPed bend and each end of the spring an arch extending in the same direction as said bend, at least one end of the spring being formed in at least two longitudinally extending branched parts which are transversely spaced apart.
Claim 3
Dependent Claim
51 words
A spring as in claim 1, wherein the ends of the spring terminate in substantially flat portions lying in the plane of the spring, and wherein only one end of the spring is branched, the arch between the other end of the spring and the bow-shaped bend having an aperture therethrough.
Claim 4
Dependent Claim
30 words
A spring as in claim 1, wherein both ends of the spring are branched and wherein both ends terminate in substantially flat portions lying in the plane of the spring.
Claim 5
Dependent Claim
41 words
A spring as in claim 1, wherein both ends of the spring are branched and wherein the branched parts are bent back toward the middle of the spring so as to be disposed adjacent the concave side of the bow-shaped portion.
References Cited (Backward Citations)
US2917709A
Cited
DE926955C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |