Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B68—SADDLERY; UPHOLSTERY
  • B68G—METHODS, EQUIPMENT, OR MACHINES FOR USE IN UPHOLSTERING; UPHOLSTERY NOT OTHERWISE PROVIDED FOR
  • B68G9/00—Placing upholstery springs in pockets; Fitting springs in upholstery

Definitions

• This invention relates generally to spring assemblies for
• each coil spring is encased within its own fabric sack or pocket.
• the sack or pocket is typically defined
• strip is generally formed by folding a strip of double width fabric
• springs are inserted between the plies with the axes of the springs
• pocketed coils are passed through a turner assembly during which
• the springs are reoriented typically about 90° within the fabric
• transverse seams defining individual pockets.
• the springs are beaten by paddles
• the present invention overcomes the above described
• the pocket according to this invention avoids the need for turning or
• the present invention preferably begins with the
• the present invention is a
• the springs are maintained in a compressed configuration between
• thermally weldable material preferably the longitudinal seam
• the longitudinal seam of the fabric Preferably, the relaxation and
• the wheels include a plurality of
• the springs are supported during their
• individual pockets are formed preferably by a transverse weld head
• the transverse seams are formed in the fabric to
• pair of opposing and rotating transport wheels indexes or moves the
• False loft occurs when the
• pocketed coil string may become crushed thus leaving areas or regions of depression.
• springs in the string is shaped to conform to the profile of the springs
• Fig. 1 is a top plan view of a schematic representation
• Fig. 2 is a side elevational view of the system
• Fig. 3 is a view similar to Fig. 1 of a second presently
• Fig. 4 is a side elevational view of the system
• Fig. 5 is a perspective view of a string of pocketed coil
• Fig. 6 is a cross-sectional view of an individual coil
• Fig. 7 is a side elevational view of a string of pocketed
• Fig. 8 is a partial perspective view of a weld head used
• Fabric 1 6 preferably thermally weldable as is well known in
• the fabric 1 6 could be cotton or another
• the fabric 1 6 is folded generally in half
• the spring insertion station 34 includes a reciprocating
• the spring 1 4 is formed and compressed and loaded onto
• the spring insertion station 34 may comprise two
• a longitudinal seam forming station 52 is located
• longitudinal seam forming station 52 joins the upper and lower plies
• a longitudinal seam 54 is
• the anvil 58 is moved reciprocally while the thermal weld head 56
• seams such as stitching, staples, or
• a first transport station 62 is located downstream from
• Each band 64 passes over spaced forward and trailing rollers 66, 68, at least one of which
• supply roll 18 through the upstream stations and is advanced toward
• the compressed springs 14 are permitted to relax and
• the expansion of the springs 14 is controlled by a
• Fig. 1 is generally parallel to the longitudinal
• Each rotational member 72 includes a
• rotational members 72 assist in advancing the springs 14 and fabric 1 6 toward a transverse seam forming station
• the transverse seam forming station 78 forms a
• transverse seam weld head 82 includes a transverse seam weld head 82 and a transverse seam weld head 82
• transverse seam forming station 78 the fabric 1 6 between the
• transverse seam 80 means for forming the transverse seam 80 such as stitching, staples
• transverse seam 80 is formed, the fabric 1 6 is needed or gathered.
• seam 54 formed at the free edges 28 of the fabric 1 6 is positioned
• seam 80 is formed by the transverse seam forming station 78.
• longitudinal seam 54 could be positioned prior to entering the
• transverse seam forming station 78 even if it is not welded to the
• seam 54 may be located anywhere between the top and bottom of the string although it is shown in the drawings as approximately in
• a downstream or second transport station 94 preferably
• transverse seam forming station 78 for discharge and subsequent
• the transport mechanism could be embodied with wheels as in Figs.
• transverse seam 80 may be positioned between the adjacent
• pocketed coil springs 14a having a barrel shaped configuration as
• Barrel shaped springs 1 4a are well known in the
• the spring 1 4a have a greater diameter than the top turn 1 1 2 and
• turns 1 1 2, 1 14 of the barrel shaped spring 1 4a may have a diameter
• the seam 80a may have
• seam 80a is shown in Fig. 8 in which a number of studs 1 1 6 are
• top and bottom of the weld head 82a are spaced farther apart
• turns have a lesser diameter than the top and bottom turns.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Springs (AREA)
• Mattresses And Other Support Structures For Chairs And Beds (AREA)
• Wire Processing (AREA)
• Casting Devices For Molds (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Chain Conveyers (AREA)
• Treatment Of Fiber Materials (AREA)

Priority Applications (10)

Applications Claiming Priority (4)

Publications (1)

Family

ID=23128205

Family Applications (1)

Country Status (14)

Cited By (4)

Families Citing this family (7)

Citations (5)

Family Cites Families (1)

• 2000
  • 2000-03-31 GB GB0108713A patent/GB2358796B/en not_active Expired - Fee Related
  • 2000-03-31 MX MXPA01010382A patent/MXPA01010382A/es active IP Right Grant
  • 2000-03-31 EP EP00911198A patent/EP1171377B2/de not_active Expired - Lifetime
  • 2000-03-31 DE DE60015318T patent/DE60015318T3/de not_active Expired - Lifetime
  • 2000-03-31 TR TR2001/02879T patent/TR200102879T2/xx unknown
  • 2000-03-31 JP JP2000612214A patent/JP4377074B2/ja not_active Expired - Fee Related
  • 2000-03-31 ES ES00911198T patent/ES2232431T5/es not_active Expired - Lifetime
  • 2000-03-31 PT PT00911198T patent/PT1171377E/pt unknown
  • 2000-03-31 CA CA002368852A patent/CA2368852C/en not_active Expired - Fee Related
  • 2000-03-31 AT AT00911198T patent/ATE280735T1/de active
  • 2000-03-31 CN CNB008062250A patent/CN1251959C/zh not_active Expired - Fee Related
  • 2000-03-31 BR BR0009482-0A patent/BR0009482A/pt not_active Application Discontinuation
  • 2000-03-31 WO PCT/IB2000/000396 patent/WO2000063113A1/en active IP Right Grant
  • 2000-03-31 AU AU33189/00A patent/AU3318900A/en not_active Abandoned

Patent Citations (5)

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