US4569399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety enclosure
Assignee: Spectronix Ltd
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Filing: 1984-07-11
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Granted: 1986-02-11
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Expires: 2004-07-11
Abstract
Abstract A protective barrier or enclosure comprising a protective wall element including inner and outer wall portions, a protective liquid located between the inner and outer wall portions, the protective liquid being characterized in that it absorbs a significant amount of kinetic energy from a moving projectile passing therethrough, causing a pressure buildup in the liquid.
Inventors
- 👤 Yechiel Spector
- 👤 Amos Gonen
- 👤 Shimon Raviv
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:02
CPC Classifications
F; F41; F41H; F41H5/00; F41H5/02; F41H5/04; A; A62; A62C; A62C3/00; A62C3/07; A62C3/08; B; B64; B64D; B64D37/00; B64D37/02; B64D37/32
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
164 words
A protective barrier, comprising: a plurality of non-intercommunicating protective wall elements including substantially parallel inner and outer wall portions; a protective liquid located between said inner and outer wall portions, said protective liquid being characterized in that it absorbs kinetic energy from a projectile passing therethrough resulting in a pressure build-up therein; at least one of said inner and outer wall portions including a selected portion which is frangible in response to said pressure build-up for producing an immediate directed and pressurized flow of said protective liquid in response thereto, the location and size of said selected portion being selected to provide a desired directed spray of said protective liquid at a protected region and wherein at least a portion of one of said inner and outer wall portions is frangible and comprises a main portion and at least one localized frangible element which is frangible in response to said pressure buildup for producing an immediate release of said protective liquid in response thereto.
Claim 2
Dependent Claim
164 words
A protective barrier, comprising: a plurality of non-intercommunicating protective wall elements including substantially parallel inner and outer wall portions; a protective liquid located between said inner and outer wall portions, said protective liquid being characterized in that it absorbs kinetic energy from a projectile passing therethrough resulting in a pressure build-up therein; at least one of said inner and outer wall portions including a selected portion which is frangible in response to said pressure build-up for producing an immediate directed and pressurized flow of said protective liquid in response thereto, the location and size of said selected portion being selected to provide a desired directed spray of said protective liquid at a protected region and wherein at least a portion of one of said inner and outer wall portions is frangible and comprises a main portion and at least one localized frangible element which is frangible in response to said pressure buildup for producing an immediate release of said protective liquid in response thereto.
Claim 3
Dependent Claim
21 words
A protective barrier according to claim 1 and wherein said inner wall portion is frangible in response to said pressure buildup.
Claim 4
Dependent Claim
21 words
A protective barrier according to claim 1 and wherein said outer wall portion is frangible in response to said pressure buildup.
Claim 5
Dependent Claim
29 words
A protective barrier according to claim 1 and wherein at least one of said inner and outer wall portions is frangible in response to penetration thereof by a projectile.
Claim 6
Dependent Claim
140 words
A protective barrier, comprising: a plurality of non-intercommunicating protective wall element including substantially parallel inner and outer wall portions; a protective liquid located between said inner and outer wall portions, said protective liquid being characterized in that it absorbs kinetic energy from a projectile passing therethrough resulting in a pressure build-up therein; at least one of said inner and outer wall portions including a selected portion which is frangible in response to said pressure build-up for producing an immediate directed and pressurized flow of said protective liquid in response thereto, the location and size of said selected portion being selected to provide a desired directed spray of said protective liquid at a protected region and comprising a pressure responsive rupture element associated with said protective wall element and arranged to provide a flow of protective liquid in a desired direction.
Claim 7
Dependent Claim
140 words
A protective barrier, comprising: a plurality of non-intercommunicating protective wall element including substantially parallel inner and outer wall portions; a protective liquid located between said inner and outer wall portions, said protective liquid being characterized in that it absorbs kinetic energy from a projectile passing therethrough resulting in a pressure build-up therein; at least one of said inner and outer wall portions including a selected portion which is frangible in response to said pressure build-up for producing an immediate directed and pressurized flow of said protective liquid in response thereto, the location and size of said selected portion being selected to provide a desired directed spray of said protective liquid at a protected region and comprising a pressure responsive rupture element associated with said protective wall element and arranged to provide a flow of protective liquid in a desired direction.
Claim 8
Dependent Claim
14 words
A protective barrier according to claim 5 and wherein said protective liquid comprises water.
Claim 9
Dependent Claim
18 words
A protective barrier according to claim 5 and wherein said protective liquid is maintained in a sealed enclosure.
Claim 10
Dependent Claim
17 words
A protective barrier according to claim 7 and wherein said protective liquid is maintained at atmospheric pressure.
Claim 11
Dependent Claim
18 words
A protective barrier according to claim 7 and wherein said protective liquid is maintained at a positive pressure.
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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) | 1989-02-10 | 1989-08-12 | 1990-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-10 | 1993-08-12 | 1994-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-10 | 1997-08-12 | 1998-02-11 | $7700.00 | Window Closed / Lapsed |