US4897886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Firefighter's garments having minimum weight and excellent protective qualities
Assignee: Norcross Safety Products LLC
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Filing: 1988-11-30
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Granted: 1990-02-06
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Expires: 2008-11-30
Abstract
Abstract A firefighter's garment as disclosed herein may be a coat or trousers or a vest. The garment has an outer layer, an intermediate layer, and an inner layer. A spacer element or elements are positioned between two of the layers of the garment. The spacer element or elements in the firefighter's garment establish and maintain an air space or air spaces between the layers of the garment, even when localized pressure or weight is applied to portions of the garment. Thus, the firefighter's garment has excellent heat insulation qualities without being heavy and/or bulky. Thus, a firefighter wearing the garment is continually protected and is subject to minimum stress and is able to work more effectively than a firefighter wearing a firefighter's conventional garment.
Inventors
- 👤 William L. Grilliot
- 👤 Mary I. Grilliot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:00
CPC Classifications
B; B32; B32B; B32B3/00; B32B3/26; B32B3/28; A; A41; A41D; A41D31/00; A41D31/04; A41D31/08; A41D31/085; A62; A62B; A62B17/00; A62B17/003; B32B2305/00; B32B2305/02; B32B2305/028; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; B32B2307/70; B32B2307/724; B32B2307/7242; B32B2307/7246; B32B2571/00; B32B2571/02
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
126 words
A firefighter's garment comprising an outer layer of flame resistant material, an intermediate layer of moisture resistant material, and an inner layer, spacer means positioned between the inner layer and the intermediate layer, the spacer means being enclosed between the inner layer and the intermediate layer whereby a dead air space is provided and circulation of air through the garment between the inner layer and the intermediate layer is prevented, the spacer means having a degree of rigidity, thereby maintaining a dead air space between the inner layer and the intermediate layer in all situations, including a situation in which localized external pressure is applied to the outer layer of the firefighter's garments, the air space thus consistently providing excellent thermal insulation while maintaining minimum weight.
Claim 2
Dependent Claim
126 words
A firefighter's garment comprising an outer layer of flame resistant material, an intermediate layer of moisture resistant material, and an inner layer, spacer means positioned between the inner layer and the intermediate layer, the spacer means being enclosed between the inner layer and the intermediate layer whereby a dead air space is provided and circulation of air through the garment between the inner layer and the intermediate layer is prevented, the spacer means having a degree of rigidity, thereby maintaining a dead air space between the inner layer and the intermediate layer in all situations, including a situation in which localized external pressure is applied to the outer layer of the firefighter's garments, the air space thus consistently providing excellent thermal insulation while maintaining minimum weight.
Claim 3
Dependent Claim
15 words
The firefighter's garment of claim 1 in which the spacer means comprises a corrugated material.
Claim 4
Dependent Claim
20 words
The firefighter's garment of claim 1 in which the spacer means comprises a plurality of spaced-apart strips of flexible material.
Claim 5
Dependent Claim
17 words
The firefighter's garment of claim 1 in which the spacer means comprises spaced-apart stacks of flexible material.
Claim 6
Dependent Claim
18 words
The firefighter's garment of claim 1 in which the spacer means comprises spaced-apart strips of generally U-shape material.
Claim 7
Dependent Claim
16 words
The firefighter's garment of claim 1 in which the inner layer is of heat resistant material.
Claim 8
Dependent Claim
34 words
The firefighter's garment of claim 1 in which the spacer means comprises spaced-apart strips of generally U-shape material, each of the U-shape strips having leg portions which are attached to one of the layers.
Claim 9
Dependent Claim
35 words
The firefighter's garment of claim 1 in which the spacer means comprises spaced-apart strips of generally U-shape material, each of the U-shape strips having a body portion which is attached to one of the layers.
Claim 10
Dependent Claim
52 words
The firefighter's garment of claim 1 in which the spacer means comprises spaced-a-part strips of generally U-shape material, each of the U-shape strips having leg portions which are attached to one of the layers, and each of the U-shape strips having a body portion which is attached to one of the layers.
Claim 11
Dependent Claim
17 words
The firefighter's garment of claim 1 in which the spacer means comprises corrugated material and flat material.
Claim 12
Dependent Claim
13 words
The firefighter's garment of claim 1 in which the garment comprises a coat.
Claim 13
Dependent Claim
12 words
The firefighter's garment of claim 1 in which the garment comprises trousers.
Claim 14
Dependent Claim
108 words
A firefigher's garment comprising a plurality of layers of material, spacer means positioned between two of the layers of material and creating a dead air space between the two layers of material, the spacer means being enclosed between said two layers whereby circulation of air through the garment between the two layers is prevented, the spacer means comprising material having a degree of rigidity whereby the air space is maintained in all situations including situations in which localized external pressure is applied to the garment, the air space in the garment thus providing continuous and constant excellent thermal insulation qualities, and whereby the garment is light in weight.
Claim 15
Dependent Claim
108 words
A firefigher's garment comprising a plurality of layers of material, spacer means positioned between two of the layers of material and creating a dead air space between the two layers of material, the spacer means being enclosed between said two layers whereby circulation of air through the garment between the two layers is prevented, the spacer means comprising material having a degree of rigidity whereby the air space is maintained in all situations including situations in which localized external pressure is applied to the garment, the air space in the garment thus providing continuous and constant excellent thermal insulation qualities, and whereby the garment is light in weight.
Claim 16
Dependent Claim
15 words
The firefigher's garment of claim 13 in which the spacer means includes a corrugate element.
Claim 17
Dependent Claim
31 words
The firefighter's garment of claim 13 which includes an outer layer, an intermediate layer, and an inner layer, the spacer means being positioned between the intermediate layer and the inner layer.
Claim 18
Dependent Claim
29 words
The firefighter's garment of claim 13 in which the spacer means comprises a plurality of strips of flexible material which are attached to at least one of the layers.
Claim 19
Dependent Claim
22 words
The firefighter's garment of claim 13 in which the spacer means comprises a plurality of spaced-apart stacks of strips of flexible material.
Claim 20
Dependent Claim
13 words
The firefighter's garment of claim 13 in which the garment comprises a coat.
Claim 21
Dependent Claim
12 words
The firefighter's garment of claim 13 in which the garment comprises trousers.
Claim 22
Independent Claim
114 words
The method of construction of a firefighter's garment comprising providing a plurality of layers of protective material, providing spacer means having a degree of rigidity, positioning the spacer means between two of the layers of material to provide dead air space between the two layers of material, enclosing the spacer-means between the two layers of material to prevent circulation of air through the garment and between the two layers of material, whereby the spacer means establishes and maintains air space between said two layers of materials even when localized external pressure is applied to the garment, the spacer means thus providing thermal insulation in the garment while permitting the garment to have minimum weight.
Claim 23
Independent Claim
114 words
The method of construction of a firefighter's garment comprising providing a plurality of layers of protective material, providing spacer means having a degree of rigidity, positioning the spacer means between two of the layers of material to provide dead air space between the two layers of material, enclosing the spacer-means between the two layers of material to prevent circulation of air through the garment and between the two layers of material, whereby the spacer means establishes and maintains air space between said two layers of materials even when localized external pressure is applied to the garment, the spacer means thus providing thermal insulation in the garment while permitting the garment to have minimum weight.
Claim 24
Dependent Claim
35 words
The method of claim 20 which includes positioning strips of material in spaced-apart relationship between two of the layers as spacer means between the two layers to provide an air space between the two layers.
Claim 25
Dependent Claim
33 words
The method of claim 20 which includes positioning U-shape strips of material in spaced-apart relationship between the two layers and attaching the U-shape strips of material to at least one of the layers.
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) | 1993-02-05 | 1993-08-07 | 1994-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-05 | 1997-08-07 | 1998-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-05 | 2001-08-07 | 2002-02-06 | $7700.00 | Window Closed / Lapsed |