US4541545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable fire resistant case
Assignee: John D Brush and Co Inc
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Filing: 1984-06-27
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Granted: 1985-09-17
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Expires: 2004-06-27
Abstract
Abstract A portable fire resistant case 10 is made with a molded, double-walled resin body 11 and cover 12 hinged and locked together and filled with insulation in the spaces between the double walls. Spring latches 30 mounted on body 11 engage interlock surfaces 33 on cover 12 to hold cover 12 to body 11 independently of the hinge and are assisted in this by a lock element 27 engaging and holding projections on the inside of body 11. Body 11 and cover 12 are formed with molded filling projections 19 and 20 forming passageways into cavities 11c and 12c that are filled with insulation through filling projections 19 and 20. Projections 19 and 20 and overfilled insulation material that they contain are cut away after the insulation has set to leave insulation stubs 23 and 24 over which escutcheons 25 and 26 are mounted on the lock side of case 10.
Inventors
- 👤 Patrick J. Beattie
- 👤 David O. Chase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:10
CPC Classifications
E; E05; E05G; E05G1/00; E05G1/02; E05G1/024; A; A45; A45C; A45C5/00; A45C5/02; E05G1/005; Y; Y10; Y10S; Y10S220/00; Y10S220/902; Y10T; Y10T70/00; Y10T70/50; Y10T70/5093; Y10T70/5097; Y10T70/5111; Y10T70/5124
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
104 words
A system of making a case fire resistant, said system comprising: a. molded resin forms having double walls defining cavities respectively shaped to form a body and cover for said case; b. filling projections formed in said walls of said forms to communicate with said cavities; c. said cavities being filled with fire resistant insulation material cast in said forms to enclose the interior of said case and partially fill said filling projections; d. said filling projections being cut away to leave exposed insulation bounded by said resin walls; and e. resin material covering said exposed insulation for sealing and concealing said insulation material.
Claim 2
Independent Claim
104 words
A system of making a case fire resistant, said system comprising: a. molded resin forms having double walls defining cavities respectively shaped to form a body and cover for said case; b. filling projections formed in said walls of said forms to communicate with said cavities; c. said cavities being filled with fire resistant insulation material cast in said forms to enclose the interior of said case and partially fill said filling projections; d. said filling projections being cut away to leave exposed insulation bounded by said resin walls; and e. resin material covering said exposed insulation for sealing and concealing said insulation material.
Claim 3
Dependent Claim
41 words
The system of claim 1 wherein said filling projections are formed in outer walls of said forms and cut away to leave stubs projecting from said outer walls, and said resin material covering said stubs is formed as molded resin escutcheons.
Claim 4
Dependent Claim
25 words
The system of claim 2 wherein said stubs for said body and cover are adjacent each other when said cover is closed against said body.
Claim 5
Dependent Claim
28 words
The system of claim 2 wherein said stubs have through bores and said escutcheons have pins extending through said bores and secured on the interior of said case.
Claim 6
Dependent Claim
40 words
The system of claim 4 including a lock mounted on one of said escutcheons, internally projecting pins on said body and said cover, and said lock being arranged to engage said pins for holding said cover closed against said body.
Claim 7
Dependent Claim
93 words
In a case having a body and a cover that can be held releasably closed together, an improvement making said case fire resistant, said improvement comprising: a. molded resin forms having double walls defining cavities respectively shaped to form said body and said cover and having filling openings communicating with said cavities; b. fire resistant insulation material filling said cavities in said body and cover and extending into said filling openings; c. severed stubs of said insulation material remaining in said filling openings; and d. resin material covering and sealing said severed stubs.
Claim 8
Dependent Claim
93 words
In a case having a body and a cover that can be held releasably closed together, an improvement making said case fire resistant, said improvement comprising: a. molded resin forms having double walls defining cavities respectively shaped to form said body and said cover and having filling openings communicating with said cavities; b. fire resistant insulation material filling said cavities in said body and cover and extending into said filling openings; c. severed stubs of said insulation material remaining in said filling openings; and d. resin material covering and sealing said severed stubs.
Claim 9
Dependent Claim
35 words
The improvement of claim 6 wherein said severed stubs extend outward from outer walls of said body and cover, and said resin material covering and sealing said severed stubs is formed as molded resin escutcheons.
Claim 10
Dependent Claim
28 words
The improvement of claim 7 wherein said stubs have through bores and said escutcheons have pins extending through said bores and secured on the interior of said case.
Claim 11
Dependent Claim
42 words
The improvement of claim 7 including a lock mounted on one of said escutcheons, lock pins respectively mounted on the interior of said body and said cover, and said lock engaging said lock pins for holding said cover closed against said body.
Claim 12
Dependent Claim
21 words
The improvement of claim 6 wherein said severed stubs are adjacent each other when said cover is closed against said body.
Claim 13
Independent Claim
128 words
A method of making a case fire resistant, said case having a body and cover that can be held releasably closed together, said method comprising: a. molding forms for said body and cover of resin material having double walls defining cavities in the shapes of said body and cover and having filling projections communicating with said cavities; b. flowing fire resistant insulation material through said filling projections and into said cavities to fill said cavities and portions of said filling projections; c. after said insulation material is set, cutting off said filling projections and said insulation material in said filling projections to leave severed stubs of exposed insulation bounded by said forms; and d. securing resin material over said severed stubs for covering and sealing said insulation material.
Claim 14
Independent Claim
128 words
A method of making a case fire resistant, said case having a body and cover that can be held releasably closed together, said method comprising: a. molding forms for said body and cover of resin material having double walls defining cavities in the shapes of said body and cover and having filling projections communicating with said cavities; b. flowing fire resistant insulation material through said filling projections and into said cavities to fill said cavities and portions of said filling projections; c. after said insulation material is set, cutting off said filling projections and said insulation material in said filling projections to leave severed stubs of exposed insulation bounded by said forms; and d. securing resin material over said severed stubs for covering and sealing said insulation material.
Claim 15
Dependent Claim
39 words
The method of claim 11 including hingedly connecting said body and cover before filling said cavities with said insulation material, and disposing said body and cover filling projections adjacent each other when said cover is closed against said body.
Claim 16
Dependent Claim
39 words
The method of claim 11 including boring holes through said severed stubs and forming said covering resin material as molded escutcheons having pins that extend through said holes and are secured on the inside of said body and cover.
Claim 17
Dependent Claim
34 words
The method of claim 11 including forming lock pins on the interior of said body and cover and mounting a lock to engage said lock pins for holding said cover closed against said body.
Claim 18
Dependent Claim
39 words
The method of claim 11 including blow molding said resin forms for said body and cover and cutting away resin material from outer ends of said filling projections to open passageways extending through said filling projections to said cavities.
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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) | 1988-09-16 | 1989-03-18 | 1989-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-16 | 1993-03-18 | 1993-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-16 | 1997-03-18 | 1997-09-17 | $7700.00 | Window Closed / Lapsed |