Patent US3669495A successfully refreshed from Google Patents.
US3669495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Upholstered seating furniture
Assignee: Individual
•
Filing: 1970-06-15
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Granted: 1972-06-13
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Expires: 1990-06-15
Abstract
Abstract This invention relates to upholstered seating furniture which comprises a unit of upholstered seating furniture which includes a plurality of framing elements made from rigid foam and a plurality of upholstering elements made from soft foam wherein the improvement comprises at least one opening defined in at least some of the framing elements, the surface of rigid foam around said opening being in a compressed condition, a layer of semi-rigid foam at least partly covering at least one framing element, said semi-rigid foam serving as both a base for the seat and back and as a resilient base for soft foam in other parts of said unit.
Inventors
- 👤 Edgar Von Rudgisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:21
CPC Classifications
A; A47; A47C; A47C4/00; A47C4/02; A47C4/028; A47C5/00; A47C5/12; Y; Y10; Y10S; Y10S297/00; Y10S297/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
166 words
A unit of upholstered seating furniture which includes a plurality of framing elements made from rigid foam and a plurality of upholstering elements made from soft foam wherein the improvement comprises: at least one opening defined in at least some of the framing elements, the surface of rigid foam around said opening being in a compressed condition, a layer of semi-rigid foam at least partly covering at least one framing element, said semi-rigid foam serving as both a base for the seat and back and as a resilient base for soft foam in other parts of said unit, said openings being provided with chamfered corners thereby reducing undesirable stress concentrations, at least a side of one of said opening and chamfered corners associated therewith extending obliquely to a surface of said framing elements, said base and back elements of said seat each having abutting oblique surfaces forming a joint surface, and at least one of said base and said back elements being tapered as to depth.
Claim 2
Dependent Claim
166 words
A unit of upholstered seating furniture which includes a plurality of framing elements made from rigid foam and a plurality of upholstering elements made from soft foam wherein the improvement comprises: at least one opening defined in at least some of the framing elements, the surface of rigid foam around said opening being in a compressed condition, a layer of semi-rigid foam at least partly covering at least one framing element, said semi-rigid foam serving as both a base for the seat and back and as a resilient base for soft foam in other parts of said unit, said openings being provided with chamfered corners thereby reducing undesirable stress concentrations, at least a side of one of said opening and chamfered corners associated therewith extending obliquely to a surface of said framing elements, said base and back elements of said seat each having abutting oblique surfaces forming a joint surface, and at least one of said base and said back elements being tapered as to depth.
Claim 3
Dependent Claim
60 words
A unit as defined in claim 1 wherein grooves are provided on the adjacent surfaces of said rigid foam elements, the open ends of said grooves abutting against one another and having cross section which narrows towards their open sides, said semi-rigid foam running into said grooves during foaming so as to form connection elements with said rigid foam elements.
Claim 4
Dependent Claim
83 words
A unit as defined in claim 1 wherein a metal reinforcing profile is incorporated in the rigid foam element forming the seat and a metal reinforcing profile is incorporated in the rigid foam element forming the back and wherein the reinforcing profiles of the seat and the reinforcing profiles of the back include single flat bars, said bars being aligned with said joint surfaces, and including fastening means cooperating with said bars for securing said back and seat together at said joint surfaces.
Claim 5
Dependent Claim
87 words
A unit as defined in claim 1 wherein the top surface of the front end of the seat is provided with respective recesses in order to provide the foamed-on layers with a greater thickness in the region where the seated person rests his legs, said semi-rigid foam layer having a substantially plane top surface extending across said recesses, whereby the layers of semi-rigid foam and the layers of soft foam being formed on in varying thicknesses according to the softness and resilience required at the respective places.
Claim 6
Dependent Claim
30 words
A unit as defined in claim 1 wherein the resPective layers of semi-rigid foam foamed onto the seat and the back are provided with holes for the purpose of ventilation.
Claim 7
Dependent Claim
52 words
A unit as defined in claim 1 wherein a layer of soft foam is foamed onto the layer of semi-rigid foam on the back, the soft foam flowing through the holes during the foaming operation and entering the interior cavity in the frame-like back where it forms a core of soft foam.
Claim 8
Dependent Claim
68 words
A unit as defined in claim 1 including upholstery material superimposed on said soft foam and wherein nailing grooves are provided in the back and the seat, and wherein the center of the bottom region of the lateral narrow sides of the back is provided with recesses, the ends of the covering material, drawn onto these parts being inserted into the said grooves and recesses and secured therein.
Claim 9
Dependent Claim
41 words
A unit as defined in claim 1 wherein the top of the back is provided with narrow projections, said semi-rigid foam layer extending over said top of the back, whereby said projections improve the hold of the layer of semi-rigid foam.
Claim 10
Dependent Claim
84 words
A unit as defined in claim 1 including side panels, means joining said side panels along opposite sides of said seat element and said back element, said side panels having grooves provided in the top of the side panels and along the outsides of said side panels at a short distance below the top edge thereof, and in which an arm pad of semi-rigid foam said foam extending into said grooves to form tongues serving to secure the arm rest to the side panel.
Claim 11
Dependent Claim
77 words
A unit as defined in claim 1 wherein said back frame element of rigid foam is in the shape of an open ended U, the height of the U being lower than the height of the entire back, a tubular resilient element being inserted into the top end of the arms of the U to form a closed frame, said semi-rigid foam layer enclosing said resilient element and said back element to form a complete, closed back.
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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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |