Class 53/114 - Coil spring encasing

Subclass of Class 53 - Package making
Definition: Apparatus for enclosing helical springs within a cover.
No. of patents: 38
Last issue date: 09/23/2008

Number	Title	Issue Date
7426810	Method and apparatus for producing pocket coil bag row An apparatus for producing a pocket coil bag row has two or more coil spring producing apparatuses for producing springs having different wire diameters and has an apparatus for transporting coil springs from each coil spring producing apparatus to a coil chute sect...	09/23/2008
6902520	Folding machine having at least one pair of knife shafts The folding machine includes at least one pair of knife shafts, the knife shafts (22, 24) of which are, in a working position, mounted parallel to each other between two spaced-apart side walls (18, 20) of the folding machine (10). In order, in ...	06/07/2005
6834477	Method and system for forming strings of pocketed coil springs with traction mechanism A string (12) of pocketed coil springs (14) is formed by inserting compressed springs between upper and lower plies of a folded, preferably thermally weldable fabric (16). The springs are maintaned in a compressed configuration while a longitudi...	12/28/2004
6810643	Method of roll packing compressible materials A method of roll packing a variety of compressible materials is provided which prevents the rotatable mandrel about which the materials are rolled from radially collapsing. The method further provides for easy removal of the roll packed material without tearing or t...	11/02/2004
6698166	Pocket spring assembly and methods An exemplary pocket spring assembly comprises a plurality of elongate fabric tubes disposed adjacent each other. Each fabric tube has a plurality of pockets, with at least some of the pockets of adjacent fabric tubes being welded together at midpoints on ...	03/02/2004
6684608	Spring units for mattresses and the like A spring unit comprises a continuous coil spring (5) contained within a sleeve (26) of strong, yet flexible, material. The unit is produced by providing a folding attachment device (2) having oppositely inclined spaced walls (13, 14) which converge from a...	02/03/2004
6640520	Apparatus and method for roll packing compressible materials An apparatus and method for roll packing a variety of compressible materials including a radially collapsible mandrel for easy removal of the roll packed material without tearing or telescoping of the material. The apparatus further includes an adjustable...	11/04/2003
6622384	Method and apparatus for forming spring units A method and apparatus for forming spring units for use in a mattress, bed, divan bed, or other upholstered unit, the method including the step of inserting a second spring (12A) into a first spring immediately prior to said first spring being formed into...	09/23/2003
6523812	Spring units The invention discloses a spring unit for use in a sprung unit such as a bed, divan bed, mattress, or other upholstered unit, the spring unit comprising a pocket of fabric or other suitable material and having at least two sub-pockets, each of said sub-po...	02/25/2003
6499275	Method and system for forming strings of pocketed coil springs A string (12) of pocketed coil springs (14) is formed by inserting compressed springs between upper and lower plies of a folded, preferably thermally weldable fabric (16). The springs are maintained in a compressed configuration while a longitudinal seam ...	12/31/2002
6467239	Method of packaging spring units A method of packaging spring units in which first and second webs of insulator material are fixedly located against the top and bottom surfaces of the spring units. The webs are folded around outermost coil springs along longitudinal edges of the spring u...	10/22/2002
6467240	Pocket spring assembly and methods An exemplary pocket spring assembly comprises a plurality of elongate fabric tubes disposed adjacent each other. Each fabric tube has a plurality of pockets, with at least some of the pockets of adjacent fabric tubes being welded together at midpoints on ...	10/22/2002
6408514	Manufacture of pocketed compound nested coil springs A system and method for manufacturing pocketed compound nested coil springs includes inserting a compressed, preferably pocketed, smaller coil spring into a vertically oriented larger coil spring either prior to compressing and inserting the outer coil sp...	06/25/2002
6357209	Method of packaging springs A method of packaging spring units in which first and second webs of insulator material are fixedly located against the top and bottom surfaces of the spring units. The webs are folded around outermost coil springs along longitudinal edges of the spring u...	03/19/2002
6336305	System for forming strings of pocketed coil springs A string of pocketed coil springs is formed by inserting compressed springs between upper and lower plies of a folded, preferably thermally weldable fabric. The springs are maintained in a compressed configuration while a longitudinal seam joins the free ...	01/08/2002
6260331	Method and apparatus for the manufacture of pocketed springs This method and apparatus contemplate the making of pocketed springs for mattresses and cushions by inserting compressed springs at intervals along and between the plies of a folder two-ply strip of sheeting, maintaining the springs compressed therein whi...	07/17/2001
6159319	Method and apparatus for forming pocketed coil spring mattresses A method and apparatus for forming a mattress having a core formed from a plurality of elongated rows of interconnected coil spring containing fabric pockets, each row having a plurality of spaced apart pockets with a spring encased in each pocket, and ha...	12/12/2000
6122900	Manufacture of pocketed compound nested coil springs A system and method for manufacturing pocketed compound nested coil springs includes inserting a compressed, preferably pocketed, smaller coil spring into a horizontally oriented larger coil spring either prior to compressing and inserting the outer coil ...	09/26/2000
6119322	Cased coil spring producing apparatus A cased coil spring producing apparatus comprises a coil spring producing mechanism for forming coil springs, a conveying mechanism including a conveyer for conveying the coil springs fed from the coil spring producing mechanism, a hardening-and-cooling m...	09/19/2000
6101697	Apparatus for producing string of pocket coils The apparatus takes coil springs and sequentially forms fabric pockets around the coil springs to form a string of pocket coil springs. It includes a system for forming a length of folded fabric for movement on a frame, a split cylinder which moves to an ...	08/15/2000
6079699	Spring assemblies for mattresses and the like A spring assembly comprises upper and lower superimposed webs of strong yet flexible material which are connected together at spaced intervals to define a plurality of similar pockets (30, 31, 32, 33 . . . ) arranged side-by-side in a parallel relationshi...	06/27/2000
6049959	Method and machine for making a spring-mattress web and a spring-mattress web For making a mattress web having two fabric webs which are attached to one another in a transverse direction of the web by seams that are spaced apart in a longitudinal direction of the, thereby to form a succession of sleeves, each of which contains a sl...	04/18/2000
6036181	Spring assembly A longitudinally extending string of springs comprising a row of springs and a pair of fabric retainers securing the springs together. The row of springs may be a band of coil springs made of a single length of wire shaped to form a plurality of coil spri...	03/14/2000
6021627	Manufacture of pocketed compound nested coil springs A system and method for manufacturing pocketed compound nested coil springs includes inserting a compressed, preferably pocketed, smaller coil spring into a horizontally oriented larger coil spring either prior to compressing and inserting the outer coil ...	02/08/2000
5868383	Multiple rate coil spring assembly An automated method for the manufacture of a coil spring assembly including inserting coil springs having predetermined multiple spring rates into respective individual pockets of a continuous pocket strip in a predetermined order. The predetermined multi...	02/09/1999
5761784	Method of manufacturing a pocketed spring assembly A method of manufacturing a pocketed coil spring assembly comprising vertically spacing two sheets of fabric apart so that the sheets are generally parallel to one another. The sheets are then attached together along one end edge and rows of coil springs ...	06/09/1998
5749133	Method and apparatus for forming strings of pocketed springs Methods and apparatus are provided for forming strings of springs enclosed within pockets having flat overlapping side seams avoiding problems with false loft in mattress construction....	05/12/1998
5740597	Pocket coil spring producing apparatus A pocket coil spring producing apparatus includes a coil spring forming mechanism for forming coil springs, a hardening mechanism for hardening coil springs fed from the coil spring forming mechanism, a conveyor mechanism for cooling and conveying the har...	04/21/1998
5622030	Method of packaging resiliently compressible articles A method of packaging a resiliently compressible article comprises the steps of inserting the article into a tube of deformable material such that excess material is provided at the ends of the tube. A first end of the tube is then sealed closed. Air is t...	04/22/1997
5613287	Method for forming strings of pocketed springs Methods and apparatus are provided for forming strings of springs enclosed within pockets having flat overlapping side seams avoiding problems with false loft in mattress construction....	03/25/1997
5572853	Method and apparatus for conditioning pocketed coil springs A method and apparatus for manufacturing mattresses, including the steps of forming a coil spring from wire, conditioning said coil spring to reduce stresses formed therein, placing said coil spring within pockets to create elongate strings of pocketed co...	11/12/1996
5303530	Spring unit assembly Apparatus for encapsulating spring units (38-40) is disclosed. The apparatus comprises a device (13) for inserting a spring unit between a pair of webs (16), a device (26) for tightening or tensioning the webs about the spring unit, and a securing device ...	04/19/1994
4854023	Method for providing pocketed coil strings having a flat overlap side seam An improved method and apparatus for constructing an improved pocketed coil string, in which a tube of fabric is formed, a transverse seam is provided across the tube, a partially compressed coil spring is inserted adjacent to the seam, and a second seam ...	08/08/1989
4565046	Apparatus for manufacturing pocketed coil springs An apparatus for manufacturing pocketed coil springs is provided. The apparatus includes a pair of weld heads and an adjustment assembly for moving the heads longitudinally or transversely from each other. The relative position of the weld lines in a fabr...	01/21/1986
4439977	Method and apparatus for making a series of pocketed coil springs A method and apparatus are disclosed for making a series of coil springs pocketed within individual pockets in an elongate fabric strip comprised of two overlying plies capable of being thermally welded together. The fabric strip is fed along a guide path...	04/03/1984
4235063	Method and apparatus for packaging compressible material A method and apparatus for packaging flexible duct material comprises positioning the duct material in a guide means, slidably moving a contact means into contact with the duct material to compress it into a carton, partially closing the end of the carton...	11/25/1980
4034845	Apparatus for stacking printed products continuously arriving from conveyor means, especially products arriving in an imbricated formation An apparatus for stacking printed products or the like continuously arriving from a conveyor and moving along a conveying path of travel, especially printed products arriving in an imbricated product formation, wherein there are provided a plurality of cl...	07/12/1977
3939622	Method and apparatus for packaging insulated duct The apparatus of this invention axially compresses radially self-sustaining tubular duct for packaging in a container which is substantially shorter than the fully extended length of the duct. The duct passes between power operated conveyors applying trac...	02/24/1976

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Class 53/114 - Coil spring encasing