Seat spring assembly and spring unit
AssigneeMorley Furniture Spring Corporation
InventorLawton H. Crosby
Life of this patent
Estimating the term…
Abstract
A seat spring assembly comprising the combination of a sinuous spring band connected between the front and back rails of a furniture seat frame and a rectangular loop, zig-zag wire spring unit rigidly secured to the top of the spring band. A substantially horizontal cushion support section of the unit extends between the front rail and a point approximately three-quarters of the way from front to back rails. The unit introduces torquing compression to the band near the front rail and in the body of the band away from the back rail as a subject is seated.
Claims13
A furniture seat, comprising:
- a seat frame having front and back rails;
- a seat spring assembly furniture seat mounted between the front and back rails;
- said spring assembly including a sinuous spring band connected at its front end to the front frame rail and at its back end to the back frame rail;
- said spring band being biased upwardly by means associated with the band;
- and
- a zig-zag wire unit fastened to said sinuous spring band and extending upwardly therefrom;
- said zig-zag wire unit including a substantially horizontal wire section for supporting a cushion and including means effective to introduce torquing forces in said band adjacent the front end of the band and at a point removed from the back end of the band but more than half of the distance between the front seat frame rail and the back seat frame rail.
A wire unit for attachment to a sinuous spring band in a furniture seat spring assembly, comprising:
- a substantially horizontal wire section formed in a rectangular loop, zig-zag pattern, and including a plurality of longitudinally extending wire segments interconnected by a plurality of transversely extending wire segments;
- a front ramp section joined to said substantially horizontal wire section by a common transverse wire segment and extending back underneath said horizontal section at an interior angle of less than 90.degree. from said horizontal section;
- a back ramp section joined to said substantially horizontal wire section by a common transverse wire segment and extending back underneath said horizontal section at an interior angle of less than 90.degree. from said horizontal section;
- a front foot joined to the lower end of said front ramp section by a common transverse wire segment;
- and
- a back foot section joined to the lower end of said back ramp section by a common transverse wire segment.
Dependencies are inferred from the claim text.