Patent US3579774A successfully refreshed from Google Patents.
US3579774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of constructing a mattress
Assignee: Leucadia Inc
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Filing: 1969-03-18
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Granted: 1971-05-25
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Expires: 1989-03-18
Abstract
Abstract An extruded plastic net, having heavy strands in one direction and lighter strands in the other direction, is used to replace the two previous elements i.e. (1) a wirerope spring-bridging unit, and (2) a cotton scrim in a mattress construction thus permitting sewing of the spring-bridging unit to the cushioning material.
Inventors
- 👤 Robert N Shreve
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:34
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/04; A47C27/045; A47C27/0456; B; B68; B68G; B68G7/00; B68G7/05; B68G7/054; Y; Y10; Y10T; Y10T29/00; Y10T29/48; Y10T29/481
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
67 words
The method of constructing a cushion comprising stitching a cushioning batt to an open mesh plastic net to form a pad, said net having a plurality of sets of polymeric plastic strands with one of said sets having the strands thereof crossing the strands of another set, and applying said pad to a spring foundation with the net side thereof facing toward the springs of said foundation.
Claim 2
Independent Claim
67 words
The method of constructing a cushion comprising stitching a cushioning batt to an open mesh plastic net to form a pad, said net having a plurality of sets of polymeric plastic strands with one of said sets having the strands thereof crossing the strands of another set, and applying said pad to a spring foundation with the net side thereof facing toward the springs of said foundation.
Claim 3
Dependent Claim
27 words
The method of claim 1 in which said stitching is performed substantially continuously, and in which said pad is cut to size to fit said spring foundation.
Claim 4
Dependent Claim
28 words
The method of claim 1 in which during said stitching operation a scrim is stitched to said cushioning batt on the opposite side thereof from said plastic net.
Claim 5
Dependent Claim
27 words
The method of claim 3 in which said stitching is performed substantially continuously, and in which said pad is cut to size to fit said spring foundation.
Claim 6
Dependent Claim
31 words
The method of claim 1 in which during said stitching operation a scrim and a topper are stitched to said cushioning batt on the opposite side thereof from said plastic net.
Claim 7
Dependent Claim
27 words
The method of claim 5 in which said stitching is performed substantially continuously, and in which said pad is cut to size to fit said spring foundation.
Claim 8
Dependent Claim
33 words
The method of claim 1 in which during said stitching operation a scrim, a topper and a ticking are stitched to said cushioning batt on the opposite side thereof from said plastic net.
Claim 9
Dependent Claim
27 words
The method of claim 7 in which said stitching is performed substantially continuously, and in which said pad is cut to size to fit said spring foundation.
Claim 10
Dependent Claim
24 words
The method of claim 1 in which the crossings of the strands of one set with the strands of another set are integral joints.
Claim 11
Dependent Claim
27 words
The method of claim 9 in which said stitching is performed substantially continuously, and in which said pad is cut to size to fit said spring foundation.
Claim 12
Dependent Claim
20 words
The method of claim 1 in which said crossing sets of strands cross each other at substantially a right angle.
Claim 13
Dependent Claim
27 words
The method of claim 11 in which said stitching is performed substantially continuously, and in which said pad is cut to size to fit said spring foundation.
Claim 14
Dependent Claim
50 words
The method of claim 1 in which said crossing sets of strands cross each other at substantially a right angle, the crossings of said sets of strands being integral joints, and the strands of one of said crossing sets being heavier than the strands of another crossing set of strands.
Claim 15
Dependent Claim
27 words
The method of claim 13 in which said stitching is performed substantially continuously, and in which said pad is cut to size to fit said spring foundation.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |