US4407031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomer mattress with stiffener elements
Assignee: Individual
•
Filing: 1981-01-07
•
Granted: 1983-10-04
•
Expires: 2001-01-07
Abstract
Abstract An improved mattress is presented having upper and lower elastomer sheets with an undulating structure of elastomer elements housed between the sheets and containing stiffener elements in the elastomer elements.
Inventors
- 👤 August Michiels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:39
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/14; A47C27/142; A47C27/144; A47C27/146; A47C27/16; A47C27/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
143 words
In a mattress comprising a pair of spacially displaced elastomer sheets, said sheets cooperating with end members to define a chamber having a longitudinal axis and being of substantially constant depth between said sheets, the improvement comprising: inner members disposed within said chamber, said inner members being comprised of elastomeric material and extending generally transverse to the longitudinal axis of the chamber, said inner members defining a pair of oppositely disposed surfaces having an undulating contour, said undulating surfaces contacting the inwardly facing surfaces of said sheets in a plurality of spacially displaced regions which extend between said end members, the regions of maximum height on each of said inner member undulating surfaces lying in planes which are substantially transverse to the chamber axis, said inner members further including stiffener elements contained therein and extending in a direction transverse to said chamber axis.
Claim 2
Dependent Claim
143 words
In a mattress comprising a pair of spacially displaced elastomer sheets, said sheets cooperating with end members to define a chamber having a longitudinal axis and being of substantially constant depth between said sheets, the improvement comprising: inner members disposed within said chamber, said inner members being comprised of elastomeric material and extending generally transverse to the longitudinal axis of the chamber, said inner members defining a pair of oppositely disposed surfaces having an undulating contour, said undulating surfaces contacting the inwardly facing surfaces of said sheets in a plurality of spacially displaced regions which extend between said end members, the regions of maximum height on each of said inner member undulating surfaces lying in planes which are substantially transverse to the chamber axis, said inner members further including stiffener elements contained therein and extending in a direction transverse to said chamber axis.
Claim 3
Dependent Claim
84 words
The mattress of claim 1 wherein said inner member is comprised of a pair of shaped elastomer layers, said layers each having a first surface which defines a sinusoidal contour and a second oppositely disposed surface which is substantially flat, and flat surface of said layers of said pair being in abutting relationship and said layers of said pair being joined together to form an integral inner member, and said flat surfaces each having a plurality of aligned recesses to house said stiffener elements.
Claim 4
Dependent Claim
18 words
The mattress of claim 2 wherein said layers of said pair are adhesively bonded at said abutting surfaces.
Claim 5
Dependent Claim
42 words
The mattress of claim 1 wherein said inner member is comprised of a plurality of abutting cylinders formed from panels of elastomeric material, each of said cylinders being bonded to the adjacent cylinders and to at least one of said elastomer sheets.
Claim 6
Dependent Claim
29 words
The mattress of claim 4 wherein said cylinders are compressed to define flattened regions and are bonded to each other and to the elastomer sheets in said flattened regions.
Claim 7
Dependent Claim
21 words
The mattress of claim 5 wherein said cylinders are formed with axial openings and said stiffeners are inserted in said openings.
Claim 8
Dependent Claim
25 words
The mattress of claim 3 wherein said recesses extend in the direction of and are aligned with the areas of maximum height of the undulations.
References Cited (Backward Citations)
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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) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |