Upholstery coil spring
AssigneeE. R. Carpenter Company, Inc.
InventorsHarry Lee Jenkins, Bobby Dean Wright
Life of this patent
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Abstract
A tempered resilient wire forms an upholstery coil spring which has a plurality of interconnected turns, with the top turn being a closed flat loop extending upwardly from the rear of the spring at a given angle to the horizontal, a second turn located immediately below the top turn and being inclined upwardly from the rear of the spring at an inclination angle which is less than the inclination angle of the top turn, a plurality of intermediate turns located below the second turn, and a flat base turn for resting on a support surface.
Claims10
An upholstery coil spring comprising
- a tempered resilient wire forming a plurality of interconnected turns including a top turn, a plurality of intermediate turns and a bottom turn,
- said top turn extending upwardly from the rear of the spring at a given angle to the horizontal,
- a second turn located immediately below the top turn and having a helical form, said second turn being inclined upwardly from the rear of the spring at an angle which is less than said given angle of the top turn,
- said intermediate turns being located below the second turn, and said base turn being a flat turn for resting on a support surface.
The upholstery coil spring of 9 wherein the given angle of the top turn is about 60.degree. to 90.degree..
Dependencies are inferred from the claim text.