US4524751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable cooking device
Assignee: Individual
•
Filing: 1982-08-20
•
Granted: 1985-06-25
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Expires: 2002-08-20
Abstract
Abstract A portable camp stove comprising a housing having two concave sections each having an open end and hinged to one another for juxtaposition with their open ends facing one another. One of the concave sections has a heat generating element secured therein beneath a heat transmitting support frame. The other of the concave sections has a collapsible wall assembly secured thereto and positionable to an operable vertical position extending above the open end thereof. A combustible product support platform is securable internally of the wall assembly, when in the operable vertical position, to support a combustible product thereon at a desired height. The wall assembly has at least one angulated reflective wall. A reflective base wall is also provided under the support platform for collecting ashes and radiating heat upwardly.
Inventors
- 👤 Allen C. Hoglund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:55
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/14; A; A47; A47J; A47J37/00; A47J37/06; A47J37/07; A47J37/0704; A47J37/0713; F24C3/04; F24C3/042
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
119 words
A portable cooking device comprising a housing having two concave sections each having an open end and securable to one another in juxtaposition with their open ends facing one another, one of said concave sections having a heat generating element secured therein beneath a heat transmitting support frame, the other of said concave sections having a collapsible wall assembly secured thereto and positionable to an operable vertical position extending above said open end of said other concave section, a combustible product support platform securable internally of said wall assembly when in said operable vertical position to support a combustible product thereon, said wall assembly having at least one angulated reflective wall, and a base wall under said support platform.
Claim 2
Dependent Claim
119 words
A portable cooking device comprising a housing having two concave sections each having an open end and securable to one another in juxtaposition with their open ends facing one another, one of said concave sections having a heat generating element secured therein beneath a heat transmitting support frame, the other of said concave sections having a collapsible wall assembly secured thereto and positionable to an operable vertical position extending above said open end of said other concave section, a combustible product support platform securable internally of said wall assembly when in said operable vertical position to support a combustible product thereon, said wall assembly having at least one angulated reflective wall, and a base wall under said support platform.
Claim 3
Dependent Claim
122 words
A portable cooking device as claimed in claim 1 wherein said wall assembly comprises an outside wall hinged at a bottom end inwardly of an outer edge of said other of said concave sections, side walls hinged to opposed vertical edges of said outside wall, said reflective wall being hinged to an edge of said other concave section opposite said edge to which said outside wall is hinged to, said side walls each having a securement means at a free vertical edge thereof engageable with a respective outer edge of said reflective wall to retain same at an angulated position sloping outwardly of said wall assembly whereby to reflect heat in the direction of an open top end of said wall assembly.
Claim 4
Dependent Claim
23 words
A portable cooking device as claimed in claim 2 wherein said reflective wall has a heat reflective coating on an inner surface thereof.
Claim 5
Dependent Claim
65 words
A portable cooking device as claimed in claim 2 wherein said side walls are foldable over an inner surface of said outside wall, said outside wall being hingeably displaceable to a horizontal position inside said other concave section with said reflective wall foldable over said outside wall and constituting a horizontal flat support top across said open end of said other of said concave sections.
Claim 6
Dependent Claim
28 words
A portable cooking device as claimed in claim 2 wherein a vertical slot is provided in one of said side walls for passage of a platform displaceable handle.
Claim 7
Dependent Claim
32 words
A portable cooking device as claimed in claim 5 wherein said platform displaceable handle is removably securable in an outer wall of one of said concave sections for carrying said cooking device.
Claim 8
Dependent Claim
38 words
A portable cooking device as claimed in claim 6 wherein said handle has a hand engageable portion, a frame engaging portion and a support section for engagement with one of said concave sections for carrying said cooking device.
Claim 9
Dependent Claim
30 words
A portable cooking device as claimed in claim 7 wherein said support section is engageable in a groove provided in a top outer edge of one of said concave sections.
Claim 10
Dependent Claim
36 words
A portable cooking device as claimed in claim 1 wherein said base wall under said support platform is an ash receiving heat reflective wall secured above a bottom wall of said other of said concave sections.
Claim 11
Dependent Claim
25 words
A portable cooking device as claimed in claim 1 wherein said base wall of said other of said concave sections is an ash receiving means.
Claim 12
Dependent Claim
51 words
A portable cooking device as claimed in claim 9 wherein said concave sections are provided with four opposed side walls, vent holes in at least some of said side walls of said other of said concave sections to provide ventilation around said ash receiving base wall and through said wall assembly.
Claim 13
Dependent Claim
18 words
A portable cooking device as claimed in claim 11 wherein said concave sections are formed of plastics material.
Claim 14
Dependent Claim
19 words
A portable cooking device as claimed in claim 11 wherein said concave sections are formed of a metallic material.
Claim 15
Dependent Claim
47 words
A portable cooking device as claimed in claim 1 wherein said concave sections define a base section and a cover section, said sections having opposed parallel side walls and a flat end wall, there being vents in at least two opposed side walls of said base section.
Claim 16
Dependent Claim
31 words
A portable cooking device as claimed in claim 14 wherein said side walls are inwardly inclined from outer edges of said cover and base sections to their respective flat end wall.
Claim 17
Dependent Claim
37 words
A portable cooking device as claimed in claim 14 wherein said cover and base sections are securable to one another through a hinge connection at opposed inner straight edges thereof to fold over one another in juxtaposition.
Claim 18
Dependent Claim
30 words
A portable cooking device as claimed in claim 16 wherein fastening means is provided adjacent outer edges of said cover and said base to lock them together in said juxtaposition.
Claim 19
Dependent Claim
43 words
A portable cooking device as claimed in claim 17 wherein said fastening means is a spring fastener secured adjacent said outer edge of said cover and having an engaging portion flexibly engageable in a lock opening adjacent said outer edge of said base.
Claim 20
Dependent Claim
27 words
A portable cooking device as claimed in claim 18 wherein said fastening means is also engageable with said heat transmitting support surface above said heat generating element.
Claim 21
Dependent Claim
41 words
A portable cooking device as claimed in claim 19 wherein said heat transmitting support frame is a rectangular wire grill hinged at one edge to said inner edge of said cover and securable at an opposed edge to said fastening means.
Claim 22
Dependent Claim
58 words
A portable cooking device as claimed in claim 20 wherein said heat generating element is a gas burner secured to a hinge plate, said wire grill being secured spaced from said gas burner a distance sufficient to permit captive storage of said support platform therebetween, and a storage compartment defined under said hinge plate having said gas burner.
Claim 23
Dependent Claim
40 words
A portable cooking device as claimed in claim 2 wherein opposed side walls of said wall assembly are each provided with a plurality of spaced support elements therein for supporting said combustible product support platform at a desired vertical position.
Claim 24
Dependent Claim
30 words
A portable cooking device as claimed in claim 22 wherein there is further provided a foodstuff support wire frame supported above said support platform and engageable by additional support elements.
Claim 25
Dependent Claim
30 words
A portable cooking device as claimed in claim 23 wherein all said support elements are hook engaging slotted protrusions stamped in said opposed side walls of said side wall assembly.
Claim 26
Dependent Claim
37 words
A portable cooking device as claimed in claim 24 wherein said combustible product support platform is a wire frame, said combustible product and foodstuff support wire frames each having hook ends for engagement in said slotted protrusions.
Claim 27
Dependent Claim
18 words
A portable cooking device as claimed in claim 1 wherein said heat generating element is a gas burner.
Claim 28
Dependent Claim
129 words
A portable cooking device comprising a housing having two concave sections each having an open end and securable to one another in juxtaposition with their open ends facing one another, one of said sections having a collapsible wall assembly secured thereto and positionable to an operable vertical position extending above said open end of said one concave section, a combustible product support platform securable internally of said wall assembly when in said operable vertical position to support a combustible product thereon, said wall assembly having at least one angulated reflective wall, a base wall under said support platform, wherein opposed side walls of said wall assembly are each provided with a plurality of spaced support elements therein for supporting said combustible product support platform at a desired vertical position.
Claim 29
Dependent Claim
129 words
A portable cooking device comprising a housing having two concave sections each having an open end and securable to one another in juxtaposition with their open ends facing one another, one of said sections having a collapsible wall assembly secured thereto and positionable to an operable vertical position extending above said open end of said one concave section, a combustible product support platform securable internally of said wall assembly when in said operable vertical position to support a combustible product thereon, said wall assembly having at least one angulated reflective wall, a base wall under said support platform, wherein opposed side walls of said wall assembly are each provided with a plurality of spaced support elements therein for supporting said combustible product support platform at a desired vertical position.
Claim 30
Dependent Claim
29 words
A portable cooking device as claimed in claim 27 wherein a wall is hingeably connected adjacent a top edge of said one concave section to constitute a support surface.
Claim 31
Dependent Claim
122 words
A portable cooking device as claimed in claim 27 wherein said wall assembly comprises an outside wall hinged at a bottom end to an outer edge of said one of said concave sections, a side wall hinged to opposed vertical edges of said outside wall, said reflective wall being hinged to an edge of said one concave section opposite said edge to which said outside wall is hinged to, said side walls each having a securement means at a free vertical edge thereof engageable with a respective outer edge of said reflective wall to retain same at an angulated position sloping outwardly of said wall assembly whereby to reflect heat in the direction of an open top end of said wall assembly.
Claim 32
Dependent Claim
65 words
A portable cooking device as claimed in claim 29 wherein said side walls are foldable over an inner surface of said outside wall, said outside wall being hingeably displaceable to a horizontal position inside said one concave section with said reflective wall foldable over said outside wall and constituting a horizontal flat support top across said open end of said one of said concave sections.
Claim 33
Dependent Claim
36 words
A portable cooking device as claimed in claim 30 wherein said base wall under said support platform is an ash receiving heat reflective wall secured above a bottom wall of said one of said concave sections.
Claim 34
Dependent Claim
51 words
A portable cooking device as claimed in claim 30 wherein said concave sections are provided with four opposed side walls, vent holes in at least some of said side walls of said one of said concave sections to provide ventilation around said ash receiving base wall and through said wall assembly.
Claim 35
Dependent Claim
47 words
A portable cooking device as claimed in claim 32 wherein said concave sections define a base section and a cover section, said sections having opposed parallel side walls and a flat end wall, there being vents in at least two opposed side walls of said base section.
Claim 36
Dependent Claim
37 words
A portable cooking device as claimed in claim 33 wherein said cover and base sections are securable to one another through a hinge connection at opposed inner straight edges thereof to fold over one another in juxtaposition.
Claim 37
Dependent Claim
30 words
A portable cooking device as claimed in claim 34 wherein fastening means is provided adjacent outer edges of said cover and said base to lock them together in said juxtaposition.
Claim 38
Dependent Claim
43 words
A portable cooking device as claimed in claim 35 wherein said fastening means is a spring fastener secured adjacent said outer edge of said cover and having an engaging portion flexibly engageable in a lock opening adjacent said outer edge of said base.
Claim 39
Dependent Claim
30 words
A portable cooking device as claimed in claim 27 wherein there is further provided a foodstuff support wire frame supported above said support platform and engageable by additional support elements.
Claim 40
Dependent Claim
30 words
A portable cooking device as claimed in claim 37 wherein all said support elements are hook engaging slotted protrusions stamped in said opposed side walls of said side wall assembly.
Claim 41
Dependent Claim
37 words
A portable cooking device as claimed in claim 38 wherein said combustible product support platform is a wire frame, said combustible product and foodstuff support wire frames each having hook ends for engagement in said slotted protrusions.
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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) | 1988-06-24 | 1988-12-24 | 1989-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-24 | 1992-12-24 | 1993-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-24 | 1996-12-24 | 1997-06-25 | $7700.00 | Window Closed / Lapsed |