US4198707A
Expired / Lapsed
US
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Soft protective construction
Assignee: Elteka Kunststoff Technik GmbH
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Filing: 1978-09-07
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Granted: 1980-04-22
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Expires: 1998-09-07
Abstract
Abstract A soft protective construction for body protection, such as a bullet-proof vest or shirt is disclosed wherein a double layered bullet-stopping arrangement of mutually moveable rectangular or square protective plates is provided which plates can preferably be inserted into pockets of a carrier material. The outer layer of plates lying on the bullet impact side consists of steel and at least in portions thereof said outer plates are overlapped in scale-like fashion. The inner plate layer, which lies closer to the body than does the outer layer, is designed to absorb or largely destroy the impact energy of a striking bullet. The protective plates of the inner layer next to the body comprise a thick shock absorbing material, in particular a plastics material, such as polyamide, and said inner plates are arranged in a common plane and are joined together in a form-locked manner along the horizontally oriented, meeting plate edges by slide joints (5) and along the vertically oriented and likewise meeting plate edges by rotating joints (6, 11, 16, 17, 22, 23, 24). Preferably, the inner layer plates comprise a casting polyamide obtained by an activated anionic polymerization of monomeric laurolactam which has a Vicat B softening point of not less than about 183° C., preferably about 160° C. to 168° C.
Inventors
- 👤 Gunter Haupt
- 👤 Franz Fischer
- 👤 Arthur Handtmann
- 👤 Erhard Bross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:46
CPC Classifications
F; F41; F41H; F41H5/00; F41H5/02; F41H5/04; F41H5/0492; F41H5/0442; F41H5/0457; Y; Y10; Y10S; Y10S428/00; Y10S428/911
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
162 words
Soft protective construction for body protection, such as a bullet proof vest or shirt, with at least a double-layered bullet-stopping arrangement of mutually moveable rectangular or square protective plates, which can preferably be inserted in pockets (30, 32) in a carrier material, which in the outer layer lying on the bullet impact side consist of steel and at least in part-regions are ovelapped like scales, and which in the inner layer next to the body, are designed to absorb or largely destroy the impact energy of a striking bullet, characterized in that the protective plates of the inner layer (E) next to the body consist of a thick shock absorbing material, in particular a plastics material, such as polyamide, and for arrangement in a common plane are joined together in a form-locked manner along the horizontally orientated, meeting plate edges by slide joints (5) and along the vertically orientated and likewise meeting plate edges by rotating joints (6, 11, 16, 17, 22,23,24).
Claim 2
Dependent Claim
162 words
Soft protective construction for body protection, such as a bullet proof vest or shirt, with at least a double-layered bullet-stopping arrangement of mutually moveable rectangular or square protective plates, which can preferably be inserted in pockets (30, 32) in a carrier material, which in the outer layer lying on the bullet impact side consist of steel and at least in part-regions are ovelapped like scales, and which in the inner layer next to the body, are designed to absorb or largely destroy the impact energy of a striking bullet, characterized in that the protective plates of the inner layer (E) next to the body consist of a thick shock absorbing material, in particular a plastics material, such as polyamide, and for arrangement in a common plane are joined together in a form-locked manner along the horizontally orientated, meeting plate edges by slide joints (5) and along the vertically orientated and likewise meeting plate edges by rotating joints (6, 11, 16, 17, 22,23,24).
Claim 3
Dependent Claim
41 words
Soft protective construction according to claim 1, characterized in that the slide joints (5) and the rotating joints (6, 11, 16, 17, 22,23, 24) are arranged essentially in alignment with the edge overlaps (1, 2) of the comparatively thin steel plates.
Claim 4
Dependent Claim
35 words
Soft protective construction according to claim 1 or 2, characterized in that the slide joints (5) are formed by complementary wedge shaped bevels (7, 8) on the corresponding horizontal meeting edges of adjacent protective plates.
Claim 5
Dependent Claim
32 words
Soft protective construction according to claim 3, characterized in that complementary wedge shaped bevels (7, 8) of the slide joint (5) are directed obliquely downwards and outwards towards the outer steel plates.
Claim 6
Dependent Claim
34 words
Soft protective construction according to claim 1 characterized in that the rotating joints (6) are formed by cylindrical faces (9, 10) of essentially complementary shape on the corresponding vertical edges of adjacent protective plates.
Claim 7
Dependent Claim
28 words
Soft protective construction according to claim 1 characterized in that the rotating joints (16, 17) are formed by contact faces of essentially complementary form of approximately S-shaped form.
Claim 8
Dependent Claim
36 words
Soft protective construction according to claim 6, characterized in that the approximately S-shaped contact surfaces of the rotating joint (16) consist of a right-angle section of straight lines (18) in combination with a curved section (19).
Claim 9
Dependent Claim
30 words
Soft protective construction according to claim 6, characterized in that the approximately S-shaped contact faces of the rotating joint (17) consist of at least two different curved sections (20, 21).
Claim 10
Dependent Claim
20 words
Soft protective construction according to claim 8, characterized in that the two curved sections (20, 21) are of different sizes.
Claim 11
Dependent Claim
40 words
Soft protective construction according to claim 1, characterized in that the rotating joints (22, 23, 24) are formed by at least one pair of acute angled contact faces interacting in the manner of a knife edge bearing in the vertex.
Claim 12
Dependent Claim
25 words
Soft protective construction according to claim 10, characterzied in that the acute angled contact faces (25, 26, 28) are combined with interacting curved contact faces.
Claim 13
Dependent Claim
75 words
Soft protective construction according to claim 1, characterized in that one of the interacting contact faces (12, 13) the rotating point (11) comprises a cut-out (14) which is formed parallel to the axis of rotation on one vertical plate edge, into which, to form a press stud type of snap fastening of the protective plates, an approximately hemicyclindrical ridge (15) formed on a vertical plate edge of a horizontally adjacent plate, is adapted to mate.
Claim 14
Dependent Claim
26 words
Soft protective construction in particular according to claim 1 characterized in that an air conditioned zone is formed on the rear side next to the body.
Claim 15
Dependent Claim
27 words
Soft protective construction according to claim 13, characterized in that the air conditioned zone is formed by a padded lining having at least vertically orientated ventilation channels.
Claim 16
Dependent Claim
34 words
Soft protective construction according to claim 14, characterized in that the padded lining is made of a foam material compatible with the skin which for a self-supporting arrangement is fastened to a cotton material.
Claim 17
Dependent Claim
26 words
Soft protective construction according to claim 13 wherein said air conditioned zone comprises a padded lining having a system of ventilation channels arranged as a grid.
Claim 18
Dependent Claim
38 words
Soft protective construction particularly according to claim 1 characterized in that the inner protective plates comprise a casting polyamide obtained by an activated anionic polymerization of monomeric laurolactam, said polyamide comprising the highest possible proportion of amorphous material.
Claim 19
Dependent Claim
42 words
Soft protective construction according to claim 17, characterized in that the casting polyamide obtained by an activated anionic polymerization of monomeric laurolactam has a Vicat B softening point of not less than about 183° C., preferably about 160° C. to 168° C.
References Cited (Backward Citations)
US1298618A
Cited
US1758296A
Cited
DE631540C
Cited
DE1013998B
Cited
DE1196100B
Cited
US3867239A
Cited
DE2642883A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-22 | 1983-10-22 | 1984-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-22 | 1987-10-22 | 1988-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-22 | 1991-10-22 | 1992-04-22 | $7700.00 | Window Closed / Lapsed |