The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 12, 2013
Filed:
Jan. 09, 2012
Howard Martin Dixon, Rossendale, GB;
Paul Rodgers, Bacup, GB;
Howard Martin Dixon, Rossendale, GB;
Paul Rodgers, Bacup, GB;
Other;
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.