Patent US4766610A successfully refreshed from Google Patents.
US4766610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Replaceable cushion liner for military headgear
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1987-01-22
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Granted: 1988-08-30
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Expires: 2007-01-22
Abstract
Abstract A headgear cushion (18) having a closed-cell foam core coated with a non-allergenic vinyl/nitrile composition. A powdered carbon is mixed with the vinyl/nitrile composition to provide a dark color. Pressure responsive material (28, 30) is adhered to the coated foam core (20, 26) and made removably attachable to a headgear (10).
Inventors
- 👤 Paul B. Mattes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:36
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/10; A42B3/12; A42B3/125; A42B3/127; Y; Y10; Y10S; Y10S2/00; Y10S2/908; Y10S2/909; Y10S428/00; Y10S428/919
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
90 words
A cushion adapted for use in a night vision headgear, comprising: a closed-cell foam core formed in a shape for fitting into the headgear; a dark colored vinyl/nitrile coating covering substantially all surfaces of said foam core to form a nonallergenic surface, said dark coloring being effective to reduce light reflections so that said headgear remains secure from detection by other night vision equipment; and a pressure responsive material covering substantially one entire side surface of said foam core and fixed thereto by adhering said material to the vinyl/nitrile coating.
Claim 2
Dependent Claim
90 words
A cushion adapted for use in a night vision headgear, comprising: a closed-cell foam core formed in a shape for fitting into the headgear; a dark colored vinyl/nitrile coating covering substantially all surfaces of said foam core to form a nonallergenic surface, said dark coloring being effective to reduce light reflections so that said headgear remains secure from detection by other night vision equipment; and a pressure responsive material covering substantially one entire side surface of said foam core and fixed thereto by adhering said material to the vinyl/nitrile coating.
Claim 3
Dependent Claim
19 words
The cushion of claim 1 wherein said foam core comprises a density of about 2-6 pounds per cubic foot.
Claim 4
Dependent Claim
18 words
The cushion of claim 1 wherein said vinyl/nitrile coating includes a powered carbon to provide said dark coloring.
Claim 5
Dependent Claim
52 words
The cushion of claim 1 wherein said foam core is shaped in the form of an inverted "T", whereby a hoizontal part thereof is adapted to provide cushioning about the forehead of the headgear user, and a vertical part thereof is adapted to engage the foremost crown part of the user's head.
Claim 6
Dependent Claim
22 words
The cushion of claim 4 wherein the horizontal part of said "T" includes depending extensions for enlarging a temple engaging area thereof.
Claim 7
Independent Claim
77 words
A method for fabricating a cushion for a night vision headgear, comprising the steps of: stamping a core of cushion material from a foam material sheet; mixing a color agent in a vinyl/nitrile liquid composition to provide a mixture which is substantially nonreflective to light and nonallergenic; dip-coating said foam core in the vinyl/nitrile liquid and allowing the coating to cure; and adhering a pressure responsive material to one side surface of said vinyl/nitrile coated foam core.
Claim 8
Independent Claim
77 words
A method for fabricating a cushion for a night vision headgear, comprising the steps of: stamping a core of cushion material from a foam material sheet; mixing a color agent in a vinyl/nitrile liquid composition to provide a mixture which is substantially nonreflective to light and nonallergenic; dip-coating said foam core in the vinyl/nitrile liquid and allowing the coating to cure; and adhering a pressure responsive material to one side surface of said vinyl/nitrile coated foam core.
Claim 9
Dependent Claim
32 words
The method of claim 6 further including stamping said core of foam from a sheet of foam having a thickness corresponding to a head size desired to be accommodated by the headgear.
Claim 10
Dependent Claim
24 words
The method of claim 7 further including stamping said foam core from a foam material ranging in thickness from 1/8 inch to 1/2 inch.
Claim 11
Dependent Claim
23 words
The method of claim 6 further including stamping said core from a high density closed-cell material ranging from 2-6 pounds per cubic foot.
Claim 12
Dependent Claim
27 words
The method of claim 6 further including stamping said core of closed-cell foam material having a density such that after said coating the surface thereof is smooth.
Claim 13
Dependent Claim
17 words
The method of claim 6 further including stamping said core in the shape of an inverted "T".
Claim 14
Dependent Claim
25 words
The method of claim 6 further including adhering said pressure responsive material to substantially the entire said one side surface of said coated foam core.
Claim 15
Dependent Claim
27 words
The method of claim 6 further including mixing a powdered carbon with said vinyl/nitrile liquid to provide said dark colored surface which is substantially nonreflective to light.
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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) | 1991-08-30 | 1992-02-29 | 1992-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-30 | 1996-02-29 | 1996-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-30 | 2000-02-29 | 2000-08-30 | $7700.00 | Window Closed / Lapsed |