Patent US3796286A successfully refreshed from Google Patents.
US3796286A
Expired / Lapsed
US
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Device for compensating rupture forces in installation components and structures, particularly in nuclear power plants
Assignee: Siemens AG
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Filing: 1971-12-09
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Granted: 1974-03-12
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Expires: 1991-12-09
Abstract
Abstract To compensate rupture forces in equipment components and structures plastically deformable damping elements having a load capacity that is central as well as inclined to the longitudinal axis thereof, and formed of a material that flows or yields at a predetermined pressure and having a cross-sectional dimension which varies substantially over the entire length thereof, are disposed between respective adjacent structural members.
Inventors
- 👤 W Kraupa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:59
CPC Classifications
G; G21; G21D; G21D3/00; G21D3/04; G21C; G21C13/00; G21C13/02; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
179 words
Device for compensating rupture forces in equipment components and structures, particularly in nuclear power plants, which include mutually adjacent, force-producing and forceabsorbing structural members, comprising a damping element disposable between the force-producing and force-absorbing structural members and having a load capacity that is central as well as inclined to the longitudinal axis thereof, said dampIng element being formed of plastically deformable material flowable at a predetermined pressure applied thereto and having a cross section varying over substantially the entire length thereof with the smallest cross section being disposed substantially centrally so that said damping element deforms over a distance increasing initially in proportion to an increase in a rupture force applied to said damping element until a predetermined force is being applied to said damping element, said force-absorbing structural member having a central bore for receiving therein flowing material of the damping element, whereby after said deformation distance increases to a greater extent than proportionately to the applied force, application of said predetermined maximum force to said damping element causes said damping element to flow into said central bore.
Claim 2
Dependent Claim
179 words
Device for compensating rupture forces in equipment components and structures, particularly in nuclear power plants, which include mutually adjacent, force-producing and forceabsorbing structural members, comprising a damping element disposable between the force-producing and force-absorbing structural members and having a load capacity that is central as well as inclined to the longitudinal axis thereof, said dampIng element being formed of plastically deformable material flowable at a predetermined pressure applied thereto and having a cross section varying over substantially the entire length thereof with the smallest cross section being disposed substantially centrally so that said damping element deforms over a distance increasing initially in proportion to an increase in a rupture force applied to said damping element until a predetermined force is being applied to said damping element, said force-absorbing structural member having a central bore for receiving therein flowing material of the damping element, whereby after said deformation distance increases to a greater extent than proportionately to the applied force, application of said predetermined maximum force to said damping element causes said damping element to flow into said central bore.
Claim 3
Dependent Claim
21 words
Device according to claim 1, wherein said damping element is formed with at least one encircling recess on the outside thereof.
Claim 4
Dependent Claim
25 words
Device according to claim 1, wherein the force-absorbing structural member is additionally formed with a recess of greater diameter than that of said central hole.
Claim 5
Dependent Claim
28 words
Device according to claim 1, wherein said damping element comprises a cylindrical body having an encircling, groove-like recess with inclined flanks formed in the outer cylindrical surface thereof.
Claim 6
Dependent Claim
23 words
Device according to claim 4, wherein said recess has a depth of at least one half the radius of said cylindrical damping element.
Claim 7
Dependent Claim
31 words
Device according to claim 4, wherein said damping element has an end face engageable at a marginal region thereof with the force-absorbing structural member for supporting and holding said damping element.
Claim 8
Dependent Claim
14 words
Device according to claim 1, wherein said damping element is formed of pure aluminum.
Claim 9
Dependent Claim
14 words
Device according to claim 1, wherein said damping element is formed of mild steel.
Claim 10
Dependent Claim
81 words
Device according to claim 1, wherein said damping element has a first end face presentable toward the force-absorbing structural member and a second end face presentable toward the force-producing structural member, and including a holding plate located at said second end face and having a spherically shaped surface facing away from said damping element and toward the force-producing structural member, and bolt means extending from said holding plate through said damping element for securing the latter to the force-absorbing structural member.
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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |