Apparatus and method for the manufacture of a spring unit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 12, 2013
Grant Date -
Jun 21, 2012
app pub date -
Jan 9, 2012
filing date -
Apr 26, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Apparatus and methods for use in the manufacture of a spring unit for incorporation into an upholstered article, for example, a mattress, cushion or the like. Coil formation apparatus includes a drive shaft to control movement of a coil pitch guide member and a link member comprising a connecting rod adjustably connected to a radius arm of the drive shaft. A coil interlinking process comprises compressing a first coil to define a clearance, extending a second coil passed the first coil via the clearance, allowing the first coil to extend across the clearance, and contracting the second coil to engage the first coil thereby interlinking the first and second coils. Spring unit manufacturing apparatus comprises a plurality of jaw pairs each comprising a first fixed jaw and a pivotal second jaw, the pivotal second jaw being pivoted by a cam and linkage assembly operated by a rotary drive shaft.
First Claim
Other Claims data not available
