US3813696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power ventilated helmet
Assignee: Individual
•
Filing: 1972-11-13
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Granted: 1974-06-04
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Expires: 1992-11-13
Abstract
Abstract A power ventilated helmet having an opening in the crown portion thereof for the passage of air therethrough and an adjustable headband for supporting the helmet on the wearer''s head. One or more air passages are provided in the space between the inner surface of the headband and the inner surface of the helmet, and compressible foam material is disposed between the headband and the helmet for substantially blocking the flow of air between the helmet and the headband. The helmet further includes a blower operable either to draw air in through the wearer''s head and to exhaust the air downwardly through the air passages over the wearer''s head, or to draw air in through the air passages up over the wearer''s face and head, to draw it between the inner surface of the helmet and the wearer''s head and then to exhaust it from the opening. These air passages are of substantially constant cross sectional area regardless of the size to which the headband is adjusted to insure that the blower forces air through the air passages at a desired rate regardless of the size to which the headband is adjusted.
Inventors
- 👤 G Yeager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:21
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/28; A42B3/286; Y; Y10; Y10S; Y10S2/00; Y10S2/905; Y10S2/906
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
315 words
A power ventilated helmet having a crown portion, an opening in the crown portion for the passage of air therethrough, means for supporting the helmet on the wearer''s head including a generally horizontal headband encircling the head and being adjustable within a limited range to fit most wearers, said headband being secured to and spaced from the inner surface of the crown portion of said helmet, means secured to the inner surface of the headband and movable with said headband upon adjustment of the headband for defining one or more air passages in the space between the inner surface of said headband and the inner surface of the crown portion of the helmet, compressible material disposed between said means defining said air passages and the crown portion of the helmet for substantially blocking the flow of air in the space between the air passage defining means and the inner surface of said crown portion, and power operated blower means carried by the helmet operable either to draw air in through said opening, to blow it between the inner surface of the crown portion of the helmet and the wearer''s head, and to exhaust the air downwardly through said air passages over the wearer''s head, or to draw air in through said air passages up over the wearer''s head, to draw it between the inner surface of the crown portion of the helmet and the wearer''s head and to exhaust it from said opening, said compressible material being expansible and compressible to block the space between the air passage defining means and the inner surface of the crown portion, said air passages being of substantially constant cross sectional area regardless of the size to which the headband is adjusted thereby to insure that said blower means forces air over the wearer''s head in a predetermined pattern regardless of the size to which said headband is adjusted.
Claim 2
Dependent Claim
315 words
A power ventilated helmet having a crown portion, an opening in the crown portion for the passage of air therethrough, means for supporting the helmet on the wearer''s head including a generally horizontal headband encircling the head and being adjustable within a limited range to fit most wearers, said headband being secured to and spaced from the inner surface of the crown portion of said helmet, means secured to the inner surface of the headband and movable with said headband upon adjustment of the headband for defining one or more air passages in the space between the inner surface of said headband and the inner surface of the crown portion of the helmet, compressible material disposed between said means defining said air passages and the crown portion of the helmet for substantially blocking the flow of air in the space between the air passage defining means and the inner surface of said crown portion, and power operated blower means carried by the helmet operable either to draw air in through said opening, to blow it between the inner surface of the crown portion of the helmet and the wearer''s head, and to exhaust the air downwardly through said air passages over the wearer''s head, or to draw air in through said air passages up over the wearer''s head, to draw it between the inner surface of the crown portion of the helmet and the wearer''s head and to exhaust it from said opening, said compressible material being expansible and compressible to block the space between the air passage defining means and the inner surface of the crown portion, said air passages being of substantially constant cross sectional area regardless of the size to which the headband is adjusted thereby to insure that said blower means forces air over the wearer''s head in a predetermined pattern regardless of the size to which said headband is adjusted.
Claim 3
Dependent Claim
113 words
A power ventilated helmet as set forth in claim 1 wherein said headband has a front portion and a rear portion movable relative to one another for effecting adjustment of the headband within said limited range, at least one of said portions including a head-engaging band and an outer member between said head-engaging band and the inner surface of the crown portion of the helmet, said outer member being spaced from the outer surface of said head-engaging member thereby to form a gap constituting one of said air passages, said compressible material being disposed between the outer surface of said outer member and the inner surface of the crown portion of the helmet.
Claim 4
Dependent Claim
77 words
A power ventilated helmet as set forth in claim 2 wherein said compressible material is a resilient foam material bonded to the outer surface of said outer member and in engagement with the inner surface of the crown portion of the helmet so that as said headband is adjusted said foam material expands or compresses thereby substantially to block the flow of air between the headband and the inner surface of the crown portion of the helmet.
Claim 5
Dependent Claim
28 words
A power ventilated helmet as set forth in claim 3 wherein said headband portions have indicia thereon to indicate the head size to which the headband is adjusted.
Claim 6
Dependent Claim
53 words
A power ventilated helmet as set forth in claim 3 wherein said front and rear headband portions both include a head-engaging band and an outer member spaced therefrom to constitute air passages at the front and rear of the helmet with said foam material bonded to the outer surface of the outer members.
Claim 7
Dependent Claim
99 words
A power ventilated helmet as set forth in claim 3 further including means for adjustably securing said headband portions to the inner surface of the crown portion of the helmet at each side of the helmet, said adjustable securing means comprising a member releasably secured to the inner surface of the crown portion of the helmet and extending inwardly therefrom for supporting the headband in spaced relation to the inner surface of the crown portion, said headband portions being releasably secured to said member and being movable relative thereto to effect adjustment of the headband within said limited range.
Claim 8
Dependent Claim
28 words
A power ventilated helmet as set forth in claim 6 wherein said adjustable securing means has an opening extending generally vertically therethrough constituting one of said air passages.
Claim 9
Dependent Claim
66 words
A power ventilated helmet as set forth in claim 7 wherein said adjustable securing means further comprises shim means contoured to fit the inner surface of the crown portion, said member being channel-shaped with its open side facing said shim means and with portions thereof in engagement with said shim means so that said channel-shaped member and said shim means together form said vertically disposed opening.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |