EP0332925A1
Expired / Lapsed
EP
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A padding element for protection against shocks, particularly for a crash helmet
Assignee: Vela SRL
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Filing: 1989-02-28
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Granted: —
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Expires: 2009-02-28
Abstract
Abstract A padding element (6) for protection against shocks, particularly useful with a crash helmet (1), which confers on the helmet unusual adaptability to the user's head, comprises at least one deformable vesicle (7) containing a fluid (11) which, in use of the padding element, is a saturated vapor state, a Peltier-effect thermoelectronic component (16) having a face (17) in contact with a surface section of said at least one vesicle (7), and a power supply (19) for supplying an electric current in either directions to said component (16), so as to either develop or absorb heat from said face and adjust the vesicle (7) internal pressure.
Inventors
- 👤 Claudio Zarotti
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 02:35
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/32; A42B3/328; A42B3/04; A42B3/10; A42B3/12; A42B3/121; A42B3/122; A42B3/28; A42B3/285
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
68 words
A padding element (6) for protection against shocks, particularly useful with a crash helmet (1), being of a type which comprises at least one deformable vesicle (7) containing a fluid which, in use of the padding element (6), is in a saturated vapor state, characterized in that it comprises a temperature adjuster means (15) associated with said at least one vesicle (7) to vary the vesicle internal pressure.
Claim 2
Dependent Claim
68 words
A padding element (6) for protection against shocks, particularly useful with a crash helmet (1), being of a type which comprises at least one deformable vesicle (7) containing a fluid which, in use of the padding element (6), is in a saturated vapor state, characterized in that it comprises a temperature adjuster means (15) associated with said at least one vesicle (7) to vary the vesicle internal pressure.
Claim 3
Dependent Claim
76 words
A padding element (6) for protection against shocks, particularly useful with a crash helmet (1), being of a type which comprises at least one deformable vesicle (7) containing a fluid which, in use of the padding element, is in a saturated vapor state, characterized in that it comprises a temperature adjuster means (15) for adjusting the temperature until the fluid has been fully condensed and being associated with said vesicle (7) to vary the vesicle volume.
Claim 4
Dependent Claim
76 words
A padding element (6) for protection against shocks, particularly useful with a crash helmet (1), being of a type which comprises at least one deformable vesicle (7) containing a fluid which, in use of the padding element, is in a saturated vapor state, characterized in that it comprises a temperature adjuster means (15) for adjusting the temperature until the fluid has been fully condensed and being associated with said vesicle (7) to vary the vesicle volume.
Claim 5
Dependent Claim
75 words
A padding element (6) according to either Claim 1 or 2, characterized in that said temperature adjuster means (15) comprises a Peltier-effect thermoelectronic component (16) having two opposite faces (17,18), one (17) of which is in contact with a surface section of said at least one vesicle (7), and a power supply (19) operative to supply an electric current in either directions to said component (16), to thereby develop or absorb heat at said face.
Claim 6
Dependent Claim
31 words
A padding element (6) according to Claim 3, characterized in that it includes a heat exchanger (25) operative between the opposite free face (18) of the component (16) and the environment.
Claim 7
Dependent Claim
44 words
A padding element (6) according to Claim 4, characterized in that said heat exchanger (25) is a metal plate (21) having a wall (22) in contact with said free face (18) of the component (16) and an opposite wall (23) formed with fins (24).
Claim 8
Dependent Claim
23 words
A padding element (6) according to Claim 5, characterized in that it comprises a heat-insulative liner (25) extending at the remaining vesicle section.
Claim 9
Dependent Claim
28 words
A padding element (6) according to Claim 6, characterized in that said liner (25) comprises an envelope (26) enclosing said vesicle (7) and defining an interspace (27) therewith.
Claim 10
Dependent Claim
63 words
A padding element (6) according to Claim 3, characterized in that it comprises a means (33) of sensing the pressure inside the vesicle, a storage unit (31) fed with a pressure reference value, a comparator node (34) fed with the sensed pressure and the reference pressure to issue a difference signal, and an electric current control means (37) driven by said difference signal.
Claim 11
Dependent Claim
25 words
A padding element (6) according to Claim 8, characterized in that said vesicle pressure sensing means comprises a pressure transducer (33) facing said interspace (27).
Claim 12
Dependent Claim
31 words
A padding element (1) according to either Claim 1 or 2, characterized in that said fluid (11) has a boiling temperature within the range of 10°C to 70°C at atmospheric pressure.
Claim 13
Dependent Claim
16 words
A padding element (6) according to Claim 10, characterized in that said fluid is a mixture.
Claim 14
Dependent Claim
19 words
A padding element (6) according to Claim 11, characterized in that said fluid is a mixture of several Freon's.
Claim 15
Dependent Claim
22 words
A padding element (6) according to Claim 12, characterized in that said fluid is a mixture of Freon MF and Freon TF.
Claim 16
Dependent Claim
31 words
A padding element (6) according to Claim 13, characterized in that the percent amount of Freon MF in said mixture is in the 20% to 50% range by volume of liquid.
Claim 17
Dependent Claim
25 words
A padding element (6) according to Claim 14, characterized in that said mixture comprises 40% Freon MF and 60% Freon TF by volume of liquid.
Claim 18
Dependent Claim
28 words
A padding element (6) according to either Claim 1 or 2, characterized in that it comprises a sponge matrix (12) placed inside said at least one vesicle (7).
Claim 19
Dependent Claim
21 words
A padding element (6) according to Claim 16, characterized in that said sponge matrix (12) is formed from a heat-conductive material.
Claim 20
Dependent Claim
16 words
A padding element (6) according to Claim 17, characterized in that said heat-conductive material is polypyrrole.
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