Welding apparatus for strings of springs
AssigneeL&P Property Management Company
InventorsGuido Eigenmann, Darrell A. Richmond, Bernhard Bauer, Urs Liechti, Andreas Meier
Life of this patent
Estimating the term…
Abstract
A pocketed spring assembly comprises parallel strings, each string joined to at least one adjacent string. At least some of the strings have springs of different gauge wire and some of the pockets of the strings having springs of different gauge wire are spliced together. At least some of the strings have springs of different geometries and some of the pockets of the strings having springs of different geometries are spliced together. At least some strings may have end sections with springs different than a middle section therebetween, the springs of the end sections being firmer than the springs of the middle section.
Claims20
In combination, a first supply string of springs, a second supply string of springs and a welding apparatus, the combination comprising:
- a first supply string of springs;
- a second supply string of springs;
- and
- a welding apparatus for joining two strings of pocketed coil springs, the welding apparatus comprising;
- a first set of clamps for holding and moving an upstream tab of a starting string of pocketed coil springs, the starting string of pocketed coil springs being downstream of the clamps,
- a second set of clamps for holding and moving a downstream tab of the first supply string of pocketed coil springs, the second set of clamps being offset from the first set of clamps,
- a third set of clamps for holding and moving a downstream tab of the second supply string of pocketed coil springs, the third set of clamps being in-line with the first set of clamps,
- a cutter movable between a raised position when it is not being used and a lowered position;
- a welding horn, and
- an anvil, the welding horn and anvil being moveable between the first and third sets of clamps.
In combination, a first supply string of springs, a second supply string of springs and a welding apparatus, the combination comprising:
- a first supply string of springs;
- a second supply string of springs;
- and
- a welding apparatus comprising a welding horn,
- an anvil, the welding horn and anvil being moveable between open and closed positions,
- a first set of clamps for holding and moving an upstream tab of a starting string of pocketed coil springs, the starting string of pocketed coil springs being downstream of the welding horn and anvil,
- a second set of clamps for holding and moving a downstream tab of a first supply string of pocketed coil springs, the second set of clamps being upstream from the welding horn and anvil,
- a third set of clamps for holding and moving a downstream tab of a second supply string of pocketed coil springs, the third set of clamps being upstream from the welding horn and anvil;
- and
- a cutter movable between a raised position when it is not being used and a lowered position.
In combination, a first supply string of springs, a second supply string of springs and a welding apparatus, said combination comprising:
- a first supply string of springs;
- a second supply string of springs;
- and
- a welding apparatus comprising a welding horn,
- an anvil, the welding horn and anvil being moveable between open and closed positions,
- a first set of clamps for holding and moving an upstream tab of a starting string of pocketed coil springs originating from a first coiler, the starting string of pocketed coil springs being downstream of the welding horn and anvil,
- a second set of clamps for holding and moving a downstream tab of a first supply string of pocketed coil springs originating from the first coiler, the second set of clamps being upstream from the welding horn and anvil,
- a third set of clamps for holding and moving a downstream tab of a second supply string of pocketed coil springs originating from a second coiler, the third set of clamps being upstream from the welding horn and anvil;
- and
- a cutter movable between a first position when it is not being used and a second position.
Dependencies are inferred from the claim text.