US3741349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nuclear reactors
Assignee: Nuclear Power Group Ltd
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Filing: 1970-12-03
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Granted: 1973-06-26
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Expires: 1990-12-03
Abstract
Abstract In a nuclear reactor, clamping means for clamping together a moving member and a fixed member against the effects of seismic shock comprise wedge devices mounted between fixed and moving members, the wedge devices comprising wedges adapted to be moved into contact with opposed surfaces of moving and fixed members by an actuating member operated by external means manually or automatically. The clamping means may be associated with a fuel charging machine.
Inventors
- 👤 R Banks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:10
CPC Classifications
G; G21; G21C; G21C9/00; G21C9/04; G21C19/00; G21C19/02; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
379 words
A fuel charging apparatus for a nuclear reactor, comprising: a fuel charging member having a plurality of rolling members and supported thereby for linear movement in a first direction on a pair of spaced parallel elongated members forming a frame; a pair of parallel spaced guide rails disposed at right angles below said pair of spaced parallel elongated members, and means for enabling said frame to move linearly at right angles to said first direction on and guided by said guide rails; at least one wedging means which is the first wedging means disposed between said fuel charging member and said frame for controllably arresting relative movement therebetween in said first direction; at least a second wedging means disposed between said frame and said spaced parallel guide rails for controllably arresting reLative movement therebetween in a direction at right angles to said first direction, said first wedging means including, a first wedging piece rigidly secured to said frame, a second wedging piece disposed adjacent and close to said fuel charging member so as to be moved into braking contact therewith, an immobile first central wedge piece disposed in between said first and second wedge pieces and having an axial taper which is substantially symetrical and complementary to said first and second wedge pieces, an actuating and supporting means connected to said first central wedge piece for axially moving said first central wedge piece so as to cause a braking engagement of said second wedge piece with the fuel charging member, thereby to arrest relative movement between the frame and said fuel charging member; said second wedging means including, a third wedging piece rigidly secured to said guide rails, a fourth wedging piece disposed adjacent and close to said frame so as to be moved into braking contact therewith, an immobile second central wedge piece disposed in between said third and fourth wedge pieces and having an axial taper which is substantially symetrical and complementary to said third and fourth wedge pieces, a second actuating and supporting means connected to and for axially moving said second central wedge piece so as to cause a braking engagement of said fourth wedging piece with the frame, thereby to arrest relative movement between said frame and the guide rails in said second direction.
Claim 2
Dependent Claim
379 words
A fuel charging apparatus for a nuclear reactor, comprising: a fuel charging member having a plurality of rolling members and supported thereby for linear movement in a first direction on a pair of spaced parallel elongated members forming a frame; a pair of parallel spaced guide rails disposed at right angles below said pair of spaced parallel elongated members, and means for enabling said frame to move linearly at right angles to said first direction on and guided by said guide rails; at least one wedging means which is the first wedging means disposed between said fuel charging member and said frame for controllably arresting relative movement therebetween in said first direction; at least a second wedging means disposed between said frame and said spaced parallel guide rails for controllably arresting reLative movement therebetween in a direction at right angles to said first direction, said first wedging means including, a first wedging piece rigidly secured to said frame, a second wedging piece disposed adjacent and close to said fuel charging member so as to be moved into braking contact therewith, an immobile first central wedge piece disposed in between said first and second wedge pieces and having an axial taper which is substantially symetrical and complementary to said first and second wedge pieces, an actuating and supporting means connected to said first central wedge piece for axially moving said first central wedge piece so as to cause a braking engagement of said second wedge piece with the fuel charging member, thereby to arrest relative movement between the frame and said fuel charging member; said second wedging means including, a third wedging piece rigidly secured to said guide rails, a fourth wedging piece disposed adjacent and close to said frame so as to be moved into braking contact therewith, an immobile second central wedge piece disposed in between said third and fourth wedge pieces and having an axial taper which is substantially symetrical and complementary to said third and fourth wedge pieces, a second actuating and supporting means connected to and for axially moving said second central wedge piece so as to cause a braking engagement of said fourth wedging piece with the frame, thereby to arrest relative movement between said frame and the guide rails in said second direction.
Claim 3
Dependent Claim
31 words
A fuel charging apparatus as claimed in claim 1, wherein said actuating and supporting means and said second actuating supporting means each comprise a piston and rod moving in a cylinder.
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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |