Patent US3858862A successfully refreshed from Google Patents.
US3858862A
Expired / Lapsed
US
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Spring and slat assembly
Assignee: STANDARD BOX SPRING CO
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Filing: 1973-08-06
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Granted: 1975-01-07
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Expires: 1993-08-06
Abstract
Abstract A metal slat for use in the bottom frame of a box spring has a plurality of slots formed therein. Each slot is defined by a recess having a surface inclined to the upper surface of the slat and a lip. The lowest convolution of a coil spring or the bight of a saddle spring is forced into the slot. The inclined surface of the recess prevents the spring from moving out of the slot once received.
Inventors
- 👤 Fred A Ciampa
- 👤 Angelo Serafini
- 👤 Louis Mazzarella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:09
CPC Classifications
A; A47; A47C; A47C23/00; A47C23/04; A47C23/05; A47C7/00; A47C7/02; A47C7/34; A47C7/347
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
134 words
A slat-spring assembly which comprises: at least one compression spring having a lower convolution of predetermined height and width; a slat having an upper surface and a parallel lower surface, said slat being formed with a recess portion and a lip portion defining a slot therebetween, said recess portion extending downwardly from said upper surface and terminating below said lower surface and being spaced apart therefrom, at least a portion of the surface of said recess portion which adjoins said upper surface being inclined thereto; said slot having a cross-sectional height and width sufficient to receive said lower convolution of said spring by a translatory movement thereof accompanied by elastic deformation of said lower convolution, said inclined surface portion interfering with removal of said lower convolution in a relaxed, undistorted condition from said slot.
Claim 2
Dependent Claim
134 words
A slat-spring assembly which comprises: at least one compression spring having a lower convolution of predetermined height and width; a slat having an upper surface and a parallel lower surface, said slat being formed with a recess portion and a lip portion defining a slot therebetween, said recess portion extending downwardly from said upper surface and terminating below said lower surface and being spaced apart therefrom, at least a portion of the surface of said recess portion which adjoins said upper surface being inclined thereto; said slot having a cross-sectional height and width sufficient to receive said lower convolution of said spring by a translatory movement thereof accompanied by elastic deformation of said lower convolution, said inclined surface portion interfering with removal of said lower convolution in a relaxed, undistorted condition from said slot.
Claim 3
Dependent Claim
60 words
The assembly of claim 1, wherein said compression spring is a coil spring having a plurality of convolutions, and the lowest convolution of said coil spring is inserted into said slot into contact with said lower surface of said slat and said recess portion, and the next lowest convolution of said coil spring contacts said upper surface of said slat.
Claim 4
Dependent Claim
35 words
The assembly fo claim 1, wherein said compression spring comprises a saddle spring having a lower convolution comprising a bight formed on a bottom transverse leg thereof, and said bight is received in said slot.
Claim 5
Dependent Claim
131 words
The assembly of claim 3, said slat including a second recess portion and a second lip portion formed in said slat and defining a second slot therebetween, said second recess portion extending downwardly from said upper surface and terminating below said lower surface in spaced-apart relation thereto, at least a portion of the surface of said recess portion which adjoins said upper surface being inclined thereto; said saddle spring including lower convolutions comprising first and second bights of predetermined height and width, said slots having crosssectional heights and widths sufficient to receive said bights of said spring by translatory movements thereof accompanied by elastic deformation thereof, said inclined surface portions of said first and second recess portions interfering with removal of said bights in a relaxed, undistorted condition from said slots.
Claim 6
Dependent Claim
24 words
The assembly of claim 4, said second recess extending in a direction opposite the direction in which said recess of said first slot extends.
Claim 7
Dependent Claim
46 words
The assembly of claim 3, said slat including a second recess portion spaced apart from said first recess portion, said second recess portion extending below said lower surface and defining a second slot therewith, said bight of said saddle spring being received in both said slots.
Claim 8
Dependent Claim
13 words
The assembly of claim 1, wherein the ends of said slat are flattened.
Claim 9
Dependent Claim
24 words
The assembly of claim 7, wherein said flattened ends are formed with claw portions extending at an angle to the length of said slat.
References Cited (Backward Citations)
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US2237585A
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US2144102A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |