US4399573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced box spring frame
Assignee: Dreamwell Ltd
•
Filing: 1980-02-21
•
Granted: 1983-08-23
•
Expires: 2000-02-21
Abstract
Abstract A base frame for a box-spring which is reinforced by longitudinal beams secured to the upper surfaces of the cross slats within the spring assembly.
Inventors
- 👤 Leslie I. Baright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:07
CPC Classifications
A; A47; A47C; A47C23/00; A47C23/04; A47C23/05
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
130 words
In a box-spring, a wooden base frame comprising a rectangular border and a plurality of cross-slats secured thereon for supporting an assembly of upholstery springs adapted when upholstered to provide resilient foundation for a mattress; deflection-reducing reinforcement comprising at least one longitudinally-extending beam spanning the upper side of said frame from border to border atop the cross-slats and projecting upwardly from the cross-slats and between springs and within the assembly of springs thereon, said beam being formed of at least two wooden slats positioned respectively as an upstanding web and a flange extending laterally therefrom with the web positioned alongside the flange and secured thereto by metal fasteners driven through the face of the web into the edge of the flange, and said beam secured to each of said cross-slats.
Claim 2
Dependent Claim
130 words
In a box-spring, a wooden base frame comprising a rectangular border and a plurality of cross-slats secured thereon for supporting an assembly of upholstery springs adapted when upholstered to provide resilient foundation for a mattress; deflection-reducing reinforcement comprising at least one longitudinally-extending beam spanning the upper side of said frame from border to border atop the cross-slats and projecting upwardly from the cross-slats and between springs and within the assembly of springs thereon, said beam being formed of at least two wooden slats positioned respectively as an upstanding web and a flange extending laterally therefrom with the web positioned alongside the flange and secured thereto by metal fasteners driven through the face of the web into the edge of the flange, and said beam secured to each of said cross-slats.
Claim 3
Dependent Claim
39 words
The subject matter of claim 1 in which the beams are two in number, L-shaped, and spaced equidistantly from the longitudinal center-line of the frame, and the cross-sections of said beams are oriented for bilateral symmetry on said frame.
References Cited (Backward Citations)
US183657A
Cited
US981966A
Cited
US1823013A
Cited
US3665529A
Cited
US3717886A
Cited
US3938204A
Cited
US3755833A
Cited
US3824639A
Cited
US3971081A
Cited
US3916463A
Cited
US4020512A
Cited
US3992732A
Cited
US4074372A
Cited
US4068329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-22 | 1987-02-21 | 1987-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-22 | 1991-02-21 | 1991-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-22 | 1995-02-21 | 1995-08-23 | $7700.00 | Window Closed / Lapsed |