US3751742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filler for use between a bedspring and a separate mattress
Assignee: Individual
•
Filing: 1971-06-21
•
Granted: 1973-08-14
•
Expires: 1991-06-21
Abstract
Abstract A sheet of polyurethane foam is provided that has beveled edges at least along its longitudinal marginal portions. The beveled sheet is laced on a box spring with its beveled surface directed upwardly and on which a coil-spring or foam-type of mattress is disposed and is thereby supported.
Inventors
- 👤 R Worley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:56
CPC Classifications
A; A47; A47C; A47C19/00; A47C19/02; A47C19/021; A47C19/025; A47C19/027; A47C21/00; A47C21/06; A47C27/00; A47C27/14; A47C27/15; A47C27/16; A47C27/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
48 words
A filler for use above a bed-spring assembly and below a separate sagging mattress assembly, comprising: a sheet of resilient foam material having a length and width less than that of the spring and mattress, said sheet having a beveled edge portion along each of its longitudinal edges.
Claim 2
Dependent Claim
48 words
A filler for use above a bed-spring assembly and below a separate sagging mattress assembly, comprising: a sheet of resilient foam material having a length and width less than that of the spring and mattress, said sheet having a beveled edge portion along each of its longitudinal edges.
Claim 3
Dependent Claim
36 words
A filler according to claim 1 in which at least the surface of the beveled edge portion is a cut surface whereby the surface has a large amount of small open air pockets providing slip resistance.
Claim 4
Dependent Claim
21 words
A filler according to claim 2 in which substantially all the upper and lower surfaces of the filler are cut surfaces.
Claim 5
Dependent Claim
35 words
A filler according to claim 1 in which the beveled edge portion at its larger end is the thickness of said sheet, and at its smaller end is about one-half the thickness of said sheet.
Claim 6
Dependent Claim
33 words
A filler according to claim 1 in which the beveled edge portion decreases from the thickness of the sheet to about one-half such thickness over a horizontal distance of about 5 sheet thicknesses.
Claim 7
Dependent Claim
23 words
A filler according to claim 1 in which said sheet has a beveled edge portion along at least one of its end edges.
Claim 8
Dependent Claim
28 words
A filler according to claim 1 including a box spring beneath the wider side of said sheet and a separate mattress above the beveled side of said sheet.
Claim 9
Dependent Claim
20 words
A filler according to claim 7 in which said foam material is firmer than the effective firmness of said mattress.
Claim 10
Dependent Claim
32 words
A filler according to claim 3 in which the beveled edge portion decreases from the thickness of the sheet to about 1/2 thickness over a horizontal distance of about five sheet thicknesses.
Claim 11
Dependent Claim
21 words
A filler according to claim 1 in which the foam material is a polyurethane sheet of about 1 inch in thickness.
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |