US3887234A - Furniture subframe - Google Patents

Furniture subframe Download PDF

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Publication number
US3887234A
US3887234A US455774A US45577474A US3887234A US 3887234 A US3887234 A US 3887234A US 455774 A US455774 A US 455774A US 45577474 A US45577474 A US 45577474A US 3887234 A US3887234 A US 3887234A
Authority
US
United States
Prior art keywords
subframes
recepticles
subframe
furniture
plate sections
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US455774A
Other languages
English (en)
Inventor
William R Curtis
David C Trimble
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hercules LLC
Original Assignee
Hercules LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hercules LLC filed Critical Hercules LLC
Priority to US455774A priority Critical patent/US3887234A/en
Priority to CA210,229A priority patent/CA1082091A/en
Priority to GB1112475A priority patent/GB1468123A/en
Priority to FR7509560A priority patent/FR2265304A1/fr
Priority to BE154790A priority patent/BE827207A/xx
Priority to DK130775A priority patent/DK130775A/da
Priority to DE19752513250 priority patent/DE2513250A1/de
Priority to ZA00751961A priority patent/ZA751961B/xx
Priority to IT21744/75A priority patent/IT1034701B/it
Priority to AU79634/75A priority patent/AU483372B2/en
Application granted granted Critical
Publication of US3887234A publication Critical patent/US3887234A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C5/00—Chairs of special materials
    • A47C5/12—Chairs of special materials of plastics, with or without reinforcement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S297/00—Chairs and seats
    • Y10S297/02—Molded

Definitions

  • ABSTRACT PP N04 4551774 The invention is a structural foam furniture subframe which replaces the customary assembly of wooden 52 US. Cl. 297/440; 248/1881; 297/420; Pieces with a unitary, bearing, injection molded, 297/1310 312/140; 312/264 plastic space frame of angularly jointed plate sections, 51 Int. Cl.
  • A47 7/00 Said Subframe including at least one Peripheral load [58] Field of Search H 297/440, 445, 455 DIG 2, bearing recepticle having at least four plate sections 297/452 420, 446 442; 312/264, 203, 140., that are each connected at one end thereof to and ra- 248/188 diating outwardly from the periphery of said receptical, said subframe having attachment surfaces on all 5 References Cited sides thereof and having novel fastener attachment UNITED STATES PATENTS sections to accommodate conventional wood type fast 3,101,318 8/1963 Baermann 297/445 eners 3,658,382 4/1972 Anderson 297/422 4 Clams, 3 Drawing Figures 3,669,495 6/1972 Von Rudgisch 297/445 INS w fw'imtm- SHEET FIG.
  • the instant invention provides a low-cost solution to the rising costs and shrinking availability of wood for upholstery frames.
  • the one-piece, injection molded furniture subframe is lightweight providing ease in handling and reduced cost of shipment as well as providing a frame that will not shrink. swell or dry out with the changes in humidity.
  • the instant invention consists of an injection molded one piece plastic member having upholstery attachment surfaces and novel structural arrangements to provide an integral load bearing structure.
  • Another object of the instant invention is to provide a frame structure that will allow economical assembly line production of furniture.
  • Yet another object of the instant invention is to provide a lightweight furniture frame that is not affected by changes in temperature and humidity.
  • FIG. I is a perspective view of one embodiment of furniture suhframe of the instant invention.
  • FIG. 2 is a perspective view of another embodiment of furniture suhframe of the instant invention.
  • FIG. 3 is a perspective view of yet another alternate furniture subframe of the instant invention.
  • FIG. 1 shows two furniture subframes generally at It) and 20 which may be connected together by wooden cross members [2, I4 and 16 shown in phantom line to form a sofa bed frame.
  • the subframe I and 20 are raised from the floor by legs I8 also shown in phantom. Legs, castors or the like are connected to the subframes by well-known wood furniture techniques and hardware.
  • the subframes contain a plurality of spaced essentially parallel ribs or walls 19 which approximate adequate spans and provide bearing surfaces for wood type fasteners. These spaced essentially parallel ribs or walls are an important part of the invention.
  • Subframes l0 and 20 are one-piece, injection molded plastic members made from simple two-piece molds.
  • These frames may be made from polypropylene structural foam or other injection moldable materials, such as polystyrene or high density polyethylene.
  • Polypropylene structural foam such as that made from Pro-fax" polypropylene resin is preferred since it provides a low cost finished piece having a high density surface and a low density interior that is ideal for stapling, nailing or screwing.
  • These subframes are injection moldable from simple two-piece molds.
  • the subframes l0 and 20 incorporate space frame technology in their structural design to provide integral load-bearing structures.
  • the subframes of the instnat invention are not the mere duplication of wooden frames in plastic nor are they nonsupportative trim pieces.
  • subframes l0 and 20 provide peripheral load-bearing recepticles such as fivesided load bearing boxes 22a, 22b and 22c that are integral with the subframes into which the cross members are inserted and contained by nailing or other means.
  • the five-sided box provides bearing strength and also a convenient positive stop for easy registration in assembly. It is also within the scope of the invention to use deep four-sided boxes with or without stop means.
  • a key feature of the instant invention is the connection of the peripheral load-bearing recepticle to the other portions of the subframes. This connection works in essence much like the connection for a cantilever beam and therefore must sustain great stresses.
  • the instant invention in every embodiment utilizes at least one peripheral load-bearing recepticle that is interconnected with other portions of the subframe by at least four plate sections that are each connected at one end thereof to and radiate outwardly from said periphery.
  • this recepticle is typically illustrated by box 22b having at least four plate sections, such as 23a, 23b. 23c, 23d, 23a. and 23f, each connected at one end therefo to and extending radially outwardly from the periphery of box 22b said periphery defined by the four sides of box 22h.
  • the fifth side which closes a five-sided box for registration purposes is not considered to be connected at one end thereof to and as radiating outwardly from the periphery defined by the other four sides.
  • FIG. 2 shows an alternative embodiment of the instant invention.
  • Furniture subframes shown generally at 30 and 40 will provide load-bearing structures for a recliner chair.
  • peripheral load-bearing recepticles 32a and 32h are provided for wooden cross members 3] and 33 shown in phantom.
  • Peripheral load-bearing recepticle 32a is interconnected to the other portions of the subframe by at least four radially extending plate portions 34a, 34b, 34c and 34d.
  • Integral flange 36 provides an adequate support and fastening area for the recliner mechanism (not shown).
  • the unique plastic subframes also provide reinforced areas 38 and 42 for the attachment of castors shown in phantom.
  • Subframes 30 and 40 likewise utilize space-frame technology such as Z sections. gusseted U-channels and double Z sections to achieve optimum strength and low weight. As can be seen in both FIGS. 1 and 2, the subframes also provide continuous tacking surfaces such as 28 in FIG. I and 44 in FIG. 2 on all sides thereof. FIG. 1 also provides a large pull through opening 29 for purposes of upholstering. Subframes 30 and 40 of FIG. 2 allow any configuration of soft or hard foam cushion to be attached to the sub frame upon surface 46.
  • FIG. 3 shows another alternative embodiment of the instant invention.
  • Side subframes shown generally at 50 and 60 cooperate with back section shown generally at 70 to form the load-bearing structure for a rocker.
  • Side subframes 50 and 60 provide peripheral load-bearing recepticles 52a, 52b and 520 for connecting members shown in phantom.
  • Peripheral load-bearing recepticle 52b is interconnected with other portions of the subframe by at least four radially extending plate portions 54a, 54b, 54c and 54d.
  • Back section 70 is connected to side subframes 50 and 60 by a spring rod and attaching plate 58.
  • the side subframes 50 and 60 also provide attaching areas 62 and 64 for various arm configurations. Wide openings 66 are provided for upholstering purposes. Continuous tacking surfaces shown typically at 68 are also provided on all sides. Back section 70 provides bridging for unsupported upholstery material, for example, cotton padding which can be added during upholstering.
  • the injection molded structural foam or the like material provides load-bearing structures that are lightweight, utilizing space-frame technology and structures which eliminate inherent dcficiencies and weaknesses associated with the construction of wood pieces.
  • a furniture subframe comprising:
  • each of said subframes being comprised of a plurality of joined plate sections, said subframes being disposed in essentially parallel, mirror image like spaced apart relationship to each other, each of said subframes including at least one load bearing recepticle integral with said subframe, said recepticles each having at least four plate sections each connected at one end thereof to and radiating outwardly from the sides of said recepticles to brace said recepticles and interconnect said recepticles with said subframes; and
  • an interconnecting member having opposite ends thereof contained within said recepticles to connect said subframes.
  • Subframes as in claim 2 wherein said subframes further includes upholstery tacking surfaces on all sides thereof.
  • Subframes as in claim 3 wherein said plastic material is polypropylene structural foam.

Landscapes

  • Tables And Desks Characterized By Structural Shape (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Furniture Connections (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
US455774A 1974-03-28 1974-03-28 Furniture subframe Expired - Lifetime US3887234A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US455774A US3887234A (en) 1974-03-28 1974-03-28 Furniture subframe
CA210,229A CA1082091A (en) 1974-03-28 1974-09-27 Furniture subframe
GB1112475A GB1468123A (en) 1974-03-28 1975-03-18 Furniture frame
FR7509560A FR2265304A1 (no) 1974-03-28 1975-03-21
BE154790A BE827207A (fr) 1974-03-28 1975-03-26 Ossature pour meubles
DK130775A DK130775A (no) 1974-03-28 1975-03-26
DE19752513250 DE2513250A1 (de) 1974-03-28 1975-03-26 Unterkonstruktionen fuer moebel, insbesondere sitzmoebel
ZA00751961A ZA751961B (en) 1974-03-28 1975-03-27 Furniture subframe
IT21744/75A IT1034701B (it) 1974-03-28 1975-03-27 Sotto telai per mobili
AU79634/75A AU483372B2 (en) 1974-03-28 1975-03-27 Furniture subframe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US455774A US3887234A (en) 1974-03-28 1974-03-28 Furniture subframe

Publications (1)

Publication Number Publication Date
US3887234A true US3887234A (en) 1975-06-03

Family

ID=23810237

Family Applications (1)

Application Number Title Priority Date Filing Date
US455774A Expired - Lifetime US3887234A (en) 1974-03-28 1974-03-28 Furniture subframe

Country Status (9)

Country Link
US (1) US3887234A (no)
BE (1) BE827207A (no)
CA (1) CA1082091A (no)
DE (1) DE2513250A1 (no)
DK (1) DK130775A (no)
FR (1) FR2265304A1 (no)
GB (1) GB1468123A (no)
IT (1) IT1034701B (no)
ZA (1) ZA751961B (no)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4092049A (en) * 1976-10-21 1978-05-30 Overman Ab Lightweight knocked-down chair design constructed of inexpensive components
WO1994017696A1 (en) * 1993-02-01 1994-08-18 Klijn Hendrik Arnoldus Jacobus Prefab furniture
US5370442A (en) * 1993-05-27 1994-12-06 La-Z-Boy Chair Co. Rocker block
US5415461A (en) * 1993-10-29 1995-05-16 Sakamoto; Alice Furniture construction
US5439271A (en) * 1993-11-08 1995-08-08 Hoover Universal, Inc. Vehicle seat with extruded frame members
US6241312B1 (en) * 1998-11-02 2001-06-05 Premiere Products, Inc. Convertible bench/table apparatus and methods
GB2374002A (en) * 2001-04-05 2002-10-09 John Kermode Wooden settee frame
US20040032156A1 (en) * 1995-06-07 2004-02-19 Grant Stipek Furniture with molded frame
US20050202393A1 (en) * 2004-03-09 2005-09-15 Morgan Matthew P. Life size furniture kit
US20050285012A1 (en) * 2004-05-04 2005-12-29 Walton Toby E Security support assembly
GB2416116A (en) * 2004-07-14 2006-01-18 Swift Group Ltd Sectional bed for caravan or motor home
US7073756B1 (en) 2002-05-31 2006-07-11 Dorothy Goodrich Walton Recessed support assembly
US7252331B1 (en) 2003-11-24 2007-08-07 Dorothy Goodrich Walton Security bench
US20150130233A1 (en) * 2013-11-11 2015-05-14 Suncast Technologies, Llc Blow molded resin furniture having a stabilizing box structure
US20160106219A1 (en) * 2014-10-21 2016-04-21 Hawkeye Plastic Products Co. Do it yourself bench
WO2017150961A1 (es) * 2016-03-04 2017-09-08 Moncada Uribe Jorge Armazón de materiales reciclados para la fabricación de muebles
US10251485B2 (en) * 2015-08-25 2019-04-09 Campaign, Inc. Seating furniture
DE202019101649U1 (de) 2018-03-28 2019-07-03 Ikea Supply Ag Armlehne und zugehöriges Sitzmöbel
WO2020023979A1 (en) * 2018-07-27 2020-01-30 Ashley Furniture Industries Inc. Upholstered furniture including molded furniture components
US10548401B2 (en) 2015-08-25 2020-02-04 Campaign, Inc. Seating furniture
USD957173S1 (en) 2020-06-15 2022-07-12 Ashley Furniture Industries, Llc Pair of seat arm rest forms
US11607044B2 (en) 2020-03-16 2023-03-21 Ashley Furniture Industries, Llc Upholstered furniture including molded furniture components
US11696644B2 (en) 2018-07-27 2023-07-11 Ashley Furniture Industries, Llc Upholstered furniture including molded furniture components

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2151133A (en) * 1983-12-13 1985-07-17 Brandywell Investments Limited Method of manufacturing furniture

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3101318A (en) * 1961-04-10 1963-08-20 Herbert M Watson Method and composition for removing detergents and other contaminants from laundry wastes
US3658382A (en) * 1970-04-02 1972-04-25 Shell Oil Co Module frames for standardized upholstery type furniture and method of constructing and assembling same
US3669495A (en) * 1969-06-16 1972-06-13 Edgar Von Rudgisch Upholstered seating furniture
US3836533A (en) * 1972-10-30 1974-09-17 American Home Prod 10-hydroxy-2-phenyl-5h-pyrido(1,2-a)pyrimido(4,5-d)-pyrimidin-5-one and processes thereto

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3101318A (en) * 1961-04-10 1963-08-20 Herbert M Watson Method and composition for removing detergents and other contaminants from laundry wastes
US3669495A (en) * 1969-06-16 1972-06-13 Edgar Von Rudgisch Upholstered seating furniture
US3658382A (en) * 1970-04-02 1972-04-25 Shell Oil Co Module frames for standardized upholstery type furniture and method of constructing and assembling same
US3836533A (en) * 1972-10-30 1974-09-17 American Home Prod 10-hydroxy-2-phenyl-5h-pyrido(1,2-a)pyrimido(4,5-d)-pyrimidin-5-one and processes thereto

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4092049A (en) * 1976-10-21 1978-05-30 Overman Ab Lightweight knocked-down chair design constructed of inexpensive components
WO1994017696A1 (en) * 1993-02-01 1994-08-18 Klijn Hendrik Arnoldus Jacobus Prefab furniture
US5370442A (en) * 1993-05-27 1994-12-06 La-Z-Boy Chair Co. Rocker block
US5415461A (en) * 1993-10-29 1995-05-16 Sakamoto; Alice Furniture construction
US5439271A (en) * 1993-11-08 1995-08-08 Hoover Universal, Inc. Vehicle seat with extruded frame members
US20040032156A1 (en) * 1995-06-07 2004-02-19 Grant Stipek Furniture with molded frame
US6702391B1 (en) 1995-06-07 2004-03-09 Grant Stipek Furniture with molded frame
US6241312B1 (en) * 1998-11-02 2001-06-05 Premiere Products, Inc. Convertible bench/table apparatus and methods
GB2374002A (en) * 2001-04-05 2002-10-09 John Kermode Wooden settee frame
US7073756B1 (en) 2002-05-31 2006-07-11 Dorothy Goodrich Walton Recessed support assembly
US7252331B1 (en) 2003-11-24 2007-08-07 Dorothy Goodrich Walton Security bench
US7537453B2 (en) 2004-03-09 2009-05-26 Morgan Matthew P Life size furniture kit
US20050202393A1 (en) * 2004-03-09 2005-09-15 Morgan Matthew P. Life size furniture kit
US20050285012A1 (en) * 2004-05-04 2005-12-29 Walton Toby E Security support assembly
GB2416116A (en) * 2004-07-14 2006-01-18 Swift Group Ltd Sectional bed for caravan or motor home
US20150130233A1 (en) * 2013-11-11 2015-05-14 Suncast Technologies, Llc Blow molded resin furniture having a stabilizing box structure
US9526342B2 (en) * 2013-11-11 2016-12-27 Suncast Technologies, Llc Blow molded resin furniture having a stabilizing box structure
US9839298B2 (en) * 2014-10-21 2017-12-12 Hawkeye Plastic Products Co. Do it yourself bench
US20160106219A1 (en) * 2014-10-21 2016-04-21 Hawkeye Plastic Products Co. Do it yourself bench
US10251485B2 (en) * 2015-08-25 2019-04-09 Campaign, Inc. Seating furniture
US10548401B2 (en) 2015-08-25 2020-02-04 Campaign, Inc. Seating furniture
WO2017150961A1 (es) * 2016-03-04 2017-09-08 Moncada Uribe Jorge Armazón de materiales reciclados para la fabricación de muebles
DE202019101649U1 (de) 2018-03-28 2019-07-03 Ikea Supply Ag Armlehne und zugehöriges Sitzmöbel
WO2020023979A1 (en) * 2018-07-27 2020-01-30 Ashley Furniture Industries Inc. Upholstered furniture including molded furniture components
CN112512377A (zh) * 2018-07-27 2021-03-16 阿希礼家具工业公司 包括模制家具部件的带装饰的家具
US11122907B2 (en) 2018-07-27 2021-09-21 Ashley Furniture Industries, Llc Upholstered furniture including molded furniture components
USD977289S1 (en) 2018-07-27 2023-02-07 Ashley Furniture Industries, Llc Pair of sofa arm rest forms
US11696644B2 (en) 2018-07-27 2023-07-11 Ashley Furniture Industries, Llc Upholstered furniture including molded furniture components
US11607044B2 (en) 2020-03-16 2023-03-21 Ashley Furniture Industries, Llc Upholstered furniture including molded furniture components
USD957173S1 (en) 2020-06-15 2022-07-12 Ashley Furniture Industries, Llc Pair of seat arm rest forms

Also Published As

Publication number Publication date
AU7963475A (en) 1976-09-30
ZA751961B (en) 1976-02-25
IT1034701B (it) 1979-10-10
BE827207A (fr) 1975-09-26
DE2513250A1 (de) 1975-10-09
DK130775A (no) 1975-09-29
FR2265304A1 (no) 1975-10-24
CA1082091A (en) 1980-07-22
GB1468123A (en) 1977-03-23

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