Patent US2950043A successfully refreshed from Google Patents.
US6363539B2
Expired / Lapsed
US
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Composite helmet
Assignee: Sumitomo Bakelite Co Ltd
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Filing: 1998-12-15
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Granted: 2002-04-02
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Expires: 2018-12-15
Abstract
Abstract A helmet body is mounted or fixed detachably or undetachably a hollow molding or a ceramic-fixed hollow molding to enhance the impact resistance of the helmet body and weight-save the composite helmet, thereby increasing the adaptability. The composite helmet has excellent impact resistance. The outer surface of the helmet body is composed of a plastic or a metal and is mounted or fixed with a hollow molding having an external, truncated pyramid or cone shape so that the external shape of the hollow molding becomes similar to the external shape of the helmet body. It is preferable that the hollow molding has such a shape that at least two kinds of the starting hollow moldings having different, external, truncated pyramid or cone shapes are put one on another and integrally bonded so as to make the integrated boundary surface smooth and make the external shape of the resulting hollow molding more similar to the external shape of the helmet body.
Inventors
- 👤 Yoshishiro Tachi
- 👤 Takao Oota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:55
CPC Classifications
F; F41; F41H; F41H1/00; F41H1/04; A; A42; A42B; A42B3/00; A42B3/04; A42B3/06
Claims Analysis
Total Claims: 54
Claim 1
Independent Claim
51 words
A composite helmet which comprises: a helmet body having an external surface; and a hollow molding having an external, truncated pyramid shape attached to the external surface of the helmet body, wherein said pyramid shape is truncated at a point opposite to and farthest from a base of said pyramid shape.
Claim 2
Dependent Claim
51 words
A composite helmet which comprises: a helmet body having an external surface; and a hollow molding having an external, truncated pyramid shape attached to the external surface of the helmet body, wherein said pyramid shape is truncated at a point opposite to and farthest from a base of said pyramid shape.
Claim 3
Dependent Claim
25 words
The composite helmet according to claim 1 , wherein ceramic chips are fixed on at least a part of the surface of the hollow molding.
Claim 4
Dependent Claim
64 words
The composite helmet according to claim 1 , wherein the hollow molding is prepared by putting at least two kinds of hollow moldings having different, external, truncated pyramid shapes one on another and integrally bonding them so as to make the integrated boundary surface smooth and make the external shape of the resulting hollow molding similar to the external shape of the helmet body.
Claim 5
Dependent Claim
25 words
The composite helmet according to claim 3 , wherein ceramic chips are fixed on at least a part of the surface of the hollow molding.
Claim 6
Dependent Claim
106 words
The composite helmet according to claim 1 , wherein the hollow molding attached to the helmet body is a hollow molding having an external, truncated, bisymmetric pyramid shape prepared by cutting off a part of the hollow molding having an external, truncated pyramid shape vertically to the base of the pyramid in a certain width along the center line of the base so that the center line comes to the center of the width and integrally bonding the two divisions remaining after the cutting off so as to make the external shape of the resulting hollow molding similar to the external shape of the helmet body.
Claim 7
Dependent Claim
73 words
The composite helmet according to claim 5 , wherein the hollow molding attached to the helmet body is a hollow molding prepared by putting at least two kinds of hollow moldings having different, external, truncated bisymmetric pyramid shapes one on another and integrally bonding them so as to make the integrated boundary surface smooth and make the external shape of the resulting hollow molding similar to the external shape of the helmet body.
Claim 8
Dependent Claim
21 words
The composite helmet according to claim 6 , wherein the hollow molding attached to the helmet body has a multilayer structure.
Claim 9
Dependent Claim
24 words
The composite helmet according to claim 6 , wherein the hollow molding is a combination of at least two divisions of the hollow molding.
Claim 10
Dependent Claim
25 words
The composite helmet according to claim 5 , wherein ceramic chips are fixed on at least a part of the surface of the hollow molding.
Claim 11
Dependent Claim
25 words
The composite helmet according to claim 6 , wherein ceramic chips are fixed on at least a part of the surface of the hollow molding.
Claim 12
Dependent Claim
21 words
The composite helmet according to claim 1 , wherein the hollow molding attached to the helmet body has a multilayer structure.
Claim 13
Dependent Claim
17 words
The composite helmet according to claim 11 , wherein the layers are composed of the same materials.
Claim 14
Dependent Claim
16 words
The composite helmet according to claim 11 , wherein the layers are composed of different materials.
Claim 15
Dependent Claim
25 words
The composite helmet according to claim 11 , wherein ceramic chips are fixed on at least a part of the surface of the hollow molding.
Claim 16
Dependent Claim
24 words
The composite helmet according to claim 1 , wherein the hollow molding is a combination of at least two divisions of the hollow molding.
Claim 17
Dependent Claim
25 words
The composite helmet according to claim 15 , wherein ceramic chips are fixed on at least a part of the surface of the hollow molding.
Claim 18
Dependent Claim
42 words
The composite helmet according to claim 1 , wherein the lengthwise direction of the hollow molding corresponds to the front-and-rear direction of the helmet body and the widthwise direction of the hollow molding corresponds to the right-and-left direction of the helmet body.
Claim 19
Dependent Claim
25 words
The composite helmet according to claim 17 , wherein ceramic chips are fixed on at least a part of the surface of the hollow molding.
Claim 20
Dependent Claim
16 words
The composite helmet according to claim 1 , wherein the hollow molding has a bisymmetric shape.
Claim 21
Dependent Claim
42 words
The composite helmet according to claim 19 , wherein the lengthwise direction of the hollow molding corresponds to the front-and-rear direction of the helmet body and the widthwise direction of the hollow molding corresponds to the right-and-left direction of the helmet body.
Claim 22
Dependent Claim
25 words
The composite helmet according to claim 19 , wherein ceramic chips are fixed on at least a part of the surface of the hollow molding.
Claim 23
Dependent Claim
25 words
The composite helmet according to claim 20 , wherein ceramic chips are fixed on at least a part of the surface of the hollow molding.
Claim 24
Dependent Claim
28 words
The composite helmet according to claim 1 , wherein the internal surface of the hollow molding has the same shape as the external shape of the helmet body.
Claim 25
Dependent Claim
25 words
The composite helmet according to claim 23 , wherein ceramic chips are fixed on at least a part of the surface of the hollow molding.
Claim 26
Dependent Claim
16 words
A composite helmet according to claim 1 , wherein the helmet body is composed of plastic.
Claim 27
Dependent Claim
16 words
A composite helmet according to claim 1 , wherein the helmet body is composed of metal.
Claim 28
Dependent Claim
23 words
A composite helmet according to claim 1 , wherein the hollow molding is attached detachably to the external surface of the helmet body.
Claim 29
Dependent Claim
23 words
A composite helmet according to claim 1 , wherein the hollow molding is attached undetachably to the external surface of the helmet body.
Claim 30
Dependent Claim
51 words
A composite helmet which comprises: a helmet body having an external surface; and a hollow molding having an external, truncated cone shape attached to the external surface of the helmet body, wherein said cone shape is truncated at a point opposite to and farthest from a base of said cone shape.
Claim 31
Dependent Claim
51 words
A composite helmet which comprises: a helmet body having an external surface; and a hollow molding having an external, truncated cone shape attached to the external surface of the helmet body, wherein said cone shape is truncated at a point opposite to and farthest from a base of said cone shape.
Claim 32
Dependent Claim
16 words
A composite helmet according to claim 29 , wherein the helmet body is composed of plastic.
Claim 33
Dependent Claim
16 words
A composite helmet according to claim 29 , wherein the helmet body is composed of metal.
Claim 34
Dependent Claim
23 words
A composite helmet according to claim 29 , wherein the hollow molding is attached detachably to the external surface of the helmet body.
Claim 35
Dependent Claim
23 words
A composite helmet according to claim 29 , wherein the hollow molding is attached undetachably to the external surface of the helmet body.
Claim 36
Dependent Claim
106 words
The composite helmet according to claim 29 , wherein the hollow molding attached to the helmet body is a hollow molding having an external, truncated, bisymmetric pseudocone shape prepared by cutting off a part of the hollow molding having an external, truncated cone shape vertically to the base of the cone in a certain width along the center line of the base so that the center line comes to the center of the width and integrally bonding the two divisions remaining after the cutting off so as to make the external shape of the resulting hollow molding similar to the external shape of the helmet body.
Claim 37
Dependent Claim
73 words
The composite helmet according to claim 34 , wherein the hollow molding attached to the helmet body is a hollow molding prepared by putting at least two kinds of hollow moldings having different, external, truncated bisymmetric pseudocone shapes one on another and integrally bonding them so as to make the integrated boundary surface smooth and make the external shape of the resulting hollow molding similar to the external shape of the helmet body.
Claim 38
Dependent Claim
25 words
The composite helmet according to claim 35 , wherein ceramic chips are fixed on at least a part of the surface of the hollow molding.
Claim 39
Dependent Claim
26 words
The composite helmet according to claim 34 , wherein the ceramic chips are fixed on at least a part of the surface of the hollow molding.
Claim 40
Dependent Claim
69 words
The composite helmet according to claim 29 , wherein the helmet body is attached to a hollow molding prepared by putting at least two kinds of hollow moldings having different, external, truncated cone shapes one on another and integrally bonding them so as to make the integrated boundary surface smooth and make the external shape of the resulting hollow molding similar to the external shape of the helmet body.
Claim 41
Dependent Claim
25 words
The composite helmet according to claim 38 , wherein ceramic chips are fixed on at least a part of the surface of the hollow molding.
Claim 42
Dependent Claim
25 words
The composite helmet according to claim 29 , wherein ceramic chips are fixed on at least a part of the surface of the hollow molding.
Claim 43
Independent Claim
56 words
A method of making a composite helmet body, comprising: forming a hollow molding having an external, truncated pyramid shape which is truncated at a point opposite to and farthest from a base of said pyramid shape; and then attaching the hollow molding having the external, truncated pyramid shape to an external surface of a helmet body.
Claim 44
Independent Claim
56 words
A method of making a composite helmet body, comprising: forming a hollow molding having an external, truncated pyramid shape which is truncated at a point opposite to and farthest from a base of said pyramid shape; and then attaching the hollow molding having the external, truncated pyramid shape to an external surface of a helmet body.
Claim 45
Dependent Claim
30 words
The method of making a composite helmet body according to claim 41 , further comprising fixing ceramic chips on at least a part of the surface of the hollow molding.
Claim 46
Dependent Claim
71 words
The method of making a composite helmet body according to claim 41 , further comprising: putting at least two kinds of hollow moldings having different, external, truncated pyramid shapes one on another; and integrally bonding said at least two kinds of hollow moldings so as to make the integrated boundary surface smooth and make the external shape of the resulting hollow molding similar to the external shape of the helmet body.
Claim 47
Dependent Claim
93 words
The method of making a composite helmet body according to claim 41 , further comprising: cutting off a part of the hollow molding having an external, truncated, pyramid shape vertically to the base of the pyramid in a certain width along the center line of the base so that the center line comes to the center of the width; and integrally bonding the two divisions remaining after the step of cutting off so as to make the external shape of the resulting hollow molding similar to the external shape of the helmet body.
Claim 48
Dependent Claim
71 words
The method of making a composite helmet according to claim 44 , further comprising: putting at least two kinds of hollow moldings having different, external, truncated bisymmetric pyramid shapes one on another; and integrally bonding said at least two kinds of hollow moldings so as to make the integrated boundary surface smooth and make the external shape of the resulting hollow molding similar to the external shape of the helmet body.
Claim 49
Independent Claim
56 words
A method of making a composite helmet body, comprising: forming a hollow molding having an external, truncated cone shape which is truncated at a point opposite to and farthest from a base of said cone shape; and then attaching the hollow molding having the external, truncated cone shape to an external surface of a helmet body.
Claim 50
Independent Claim
56 words
A method of making a composite helmet body, comprising: forming a hollow molding having an external, truncated cone shape which is truncated at a point opposite to and farthest from a base of said cone shape; and then attaching the hollow molding having the external, truncated cone shape to an external surface of a helmet body.
Claim 51
Dependent Claim
29 words
The method of making a composite helmet according to claim 46 , further comprising fixing ceramic chips on at least a part of the surface of the hollow molding.
Claim 52
Dependent Claim
71 words
The method of making a composite helmet body according to claim 46 , further comprising: putting at least two kinds of hollow moldings having different, external, truncated cone shapes one on another; and integrally bonding said at least two kinds of hollow moldings so as to make the integrated boundary surface smooth and make the external shape of the resulting hollow molding similar to the external shape of the helmet body.
Claim 53
Dependent Claim
94 words
The method of making a composite helmet body according to claim 46 , further comprising: cutting off a part of the starting hollow molding having an external, truncated, cone shape vertically to the base of the pyramid in a certain width along the center line of the base so that the center line comes to the center of the width; and integrally bonding the two divisions remaining after the step of cutting off so as to make the external shape of the resulting hollow molding similar to the external shape of the helmet body.
Claim 54
Dependent Claim
71 words
The method of making a composite helmet according to claim 49 , further comprising: putting at least two kinds of hollow moldings having different, external, truncated bisymmetric pseudocone shapes one on another; and integrally bonding said at least two kinds of hollow moldings so as to make the integrated boundary surface smooth and make the external shape of the resulting hollow molding similar to the external shape of the helmet body.
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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) | 2005-04-01 | 2005-10-01 | 2006-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-04-01 | 2009-10-01 | 2010-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-04-01 | 2013-10-01 | 2014-04-02 | $7700.00 | Window Closed / Lapsed |