US4123662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shield bag
Assignee: SMR Acquisition LLC
•
Filing: 1977-03-07
•
Granted: 1978-10-31
•
Expires: 1997-03-07
Abstract
Abstract A flexible, fabric reinforced, elastomeric bag is used to contain water for neutron shielding in nuclear reactor installations. The lower surface of the bag is provided with a series of anchoring strips to secure the bags in various installation locations where shielding is desirable. The anchoring strips are adapted to be peeled from the lower surface of the bag and to sever or slit the bag wall to quickly release the water contained in the bag, thereby preventing the bag from acting as a missile due to forces applied to the bag in the event of an explosion or accidental pipe break from beneath the bag.
Inventors
- 👤 John M. Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:42
CPC Classifications
G; G21; G21C; G21C11/00; G21C11/02; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
69 words
A neutron shield bag having a plurality of flexible walls enclosing a sealed chamber, port means in said bag for filling said chamber with neutron shielding fluid, and bag anchoring means attached to and extending from at least one of said walls to secure said bag in shielding position, said anchoring means being adapted to detach from a portion of said wall and sever said wall along such portion.
Claim 2
Dependent Claim
69 words
A neutron shield bag having a plurality of flexible walls enclosing a sealed chamber, port means in said bag for filling said chamber with neutron shielding fluid, and bag anchoring means attached to and extending from at least one of said walls to secure said bag in shielding position, said anchoring means being adapted to detach from a portion of said wall and sever said wall along such portion.
Claim 3
Dependent Claim
44 words
The neutron shield bag defined in claim 1 wherein said anchoring means comprises at least one elongated strip having (A) a severing portion adhered to the outer surface of said at least one wall and (B) a bag securing portion free of said wall.
Claim 4
Dependent Claim
36 words
The neutron shield bag defined in claim 2 wherein said severing portion includes a cutting thread having a length thereof disposed within said chamber and extending along the inner surface of said at least one wall.
Claim 5
Dependent Claim
44 words
The neutron shield bag defined in claim 1 wherein said flexible walls include a top and bottom wall which are substantially mutually parallel when said chamber is filled with fluid and wherein said anchoring means is attached to and extends from said bottom wall.
Claim 6
Dependent Claim
44 words
The neutron shield bag defined in claim 4 wherein said anchoring means comprises at least one elongated strip having (A) a severing portion adhered to the outer surface of said at least one wall and (B) a bag securing portion free of said wall.
Claim 7
Dependent Claim
36 words
The neutron shield bag defined in claim 5 wherein said severing portion includes a cutting thread having a length thereof disposed within said chamber and extending along the inner surface of said at least one wall.
References Cited (Backward Citations)
US3963936A
Cited
US3142649A
Cited
US3288998A
Cited
US3536920A
Cited
US3984282A
Cited
US3884839A
Cited
US3818234A
Cited
US3891845A
Cited
US3942023A
Cited
US4036700A
Cited
DE2461243A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-30 | 1982-05-01 | 1982-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-30 | 1986-05-01 | 1986-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-30 | 1990-05-01 | 1990-10-31 | $7700.00 | Window Closed / Lapsed |