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US 12,570,518 B2Granted
Continuous production of pocketed springs
AssigneeHs Products Ltd
InventorDavid Clare
Life of this patent
Estimating the term…
Abstract
An apparatus for welding together webs, the apparatus comprising first and second weld tools, wherein at least the first weld tool is rotatable about an axis of rotation and has a substantially cylindrical surface on which is located a welding contact portion, and wherein the welding contact portion extends at least partly circumferentially around the cylindrical surface and at least partly axially along the cylindrical surface.
Claims11
An apparatus for welding together webs, the apparatus comprising:
- first and second weld tools,
- wherein at least the first weld tool is rotatable about an axis of rotation and has a substantially cylindrical surface on which is located a welding contact portion,
- wherein the welding contact portion extends at least partly circumferentially around the cylindrical surface and at least partly axially along the cylindrical surface,
- wherein the apparatus define a web path along which webs that are to be welded together are arranged to pass and the axis of rotation of the first weld tool is arranged transverse with respect to the direction of the web path, and
- wherein the first weld tool is arranged to rotate continuously at a speed that varies.
2 more elements
A method of welding together superposed webs of material, the method comprising:
- moving the webs in a path direction between first and second welding tools and bringing the welding tools towards one another to weld the webs at a location between the tools,
- wherein at least the first weld tool is made to rotate about an axis of rotation and has a substantially cylindrical surface on which is located a welding contact portion,
- wherein the welding contact portion extends at least partly circumferentially around the cylindrical surface and at least partly axially along the cylindrical surface,
- wherein a web path is defined along which webs that are to be welded together are arranged to pass the axis of rotation of the first weld tool is arranged transverse with respect to the direction of the web path, and
- wherein the first weld tool is rotated continuously at a speed that varies.
2 more elements
Dependencies are inferred from the claim text.