Patent US4143435A successfully refreshed from Google Patents.
US4143435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mattress having a corrugated plate
Assignee: Individual
•
Filing: 1977-08-03
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Granted: 1979-03-13
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Expires: 1997-08-03
Abstract
Abstract A mattress of foam rubber having a corrugated board disposed therein. Since the corrugated plate is substantially hard enough to straighten a sleeper's spinal cord, the sleeper can have a sound sleep while enjoying the soft feeling of foam rubber. Furthermore, the foam rubber is also provided with a number of round protrusions on its upper and lower surfaces as well as a number of magnets which are disposed in the valleys formed by those protrusions. Thus the sleeper can have a more sound sleep due to the effect of magnets.
Inventors
- 👤 Isamu Masuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:57
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/14; A47C27/20; A47C27/142; A47C27/146; A47C27/15; A47C31/00; A47C31/003
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
186 words
A mattress comprising a mattress body of foam rubber having a plurality of protrusions formed on at least the upper surfaces thereof, said protrusions having generally circular cross-sections along imaginary cutting planes disposed parallel to the general plane of the mattress, said protrusions being generally uniformly distributed in both longitudinal and transverse directions, said protrustions having terminating ends disposed in a generally flat common plane, depressions formed between successive protrusions, said depressions being evenly distributed in both longitudinal and transverse directions and alternating with said protrusions in both longitudinal and transverse directions, magnets in at least some of said depressions, said magnets being disposed in said depresssions spaced from said flat common plane such that a gap is provided between the magnets and a user's body supported on the upper surface of the mattress body, said magnets having a flux density of from 500 to 600 gauss, a hard corrugated board means disposed in the mattress between the upper and lower surfaces thereof, said corrugated board means extending over substantially the same area as that of the mattress body, and a covering sheet enclosing the mattress.
Claim 2
Dependent Claim
186 words
A mattress comprising a mattress body of foam rubber having a plurality of protrusions formed on at least the upper surfaces thereof, said protrusions having generally circular cross-sections along imaginary cutting planes disposed parallel to the general plane of the mattress, said protrusions being generally uniformly distributed in both longitudinal and transverse directions, said protrustions having terminating ends disposed in a generally flat common plane, depressions formed between successive protrusions, said depressions being evenly distributed in both longitudinal and transverse directions and alternating with said protrusions in both longitudinal and transverse directions, magnets in at least some of said depressions, said magnets being disposed in said depresssions spaced from said flat common plane such that a gap is provided between the magnets and a user's body supported on the upper surface of the mattress body, said magnets having a flux density of from 500 to 600 gauss, a hard corrugated board means disposed in the mattress between the upper and lower surfaces thereof, said corrugated board means extending over substantially the same area as that of the mattress body, and a covering sheet enclosing the mattress.
Claim 3
Dependent Claim
30 words
A mattress according to claim 1, wherein said magnets have a cylindrical configuration with the axes of the cylindrical magnets being disposed perpendicular to the general plane of the mattress.
Claim 4
Dependent Claim
54 words
A mattress according to claim 1, wherein each of said protrusions are generally tapered relative to an axis extending perpendicular to the general plane of the mattress body, said tapered protrusions having converging side portions which converge towards said terminating ends of said protrusions, said terminating ends of said protrusions having a spherical-like configuration.
Claim 5
Dependent Claim
23 words
A mattress according to claim 1, wherein said protrusions and depressions are formed on the upper and lower surfaces of the mattress body.
Claim 6
Dependent Claim
25 words
A mattress according to claim 1, wherein each of the corrugations of the corrugated board means has its longitudinal axis extending transversely of the mattress.
Claim 7
Dependent Claim
75 words
A mattress according to claim 1, wherein said corrugated board means comprises two corrugated boards each having juxtaposed edges extending transversely of the mattress, said juxtaposed edges being located closer to one longitudinal and of the mattress than the other longitudinal end such that the juxtaposed edges are disposed generally at the location of a sleeper's knees, whereby the mattress is adapted to be folded along said juxtaposed edges to thereby facilitate storing the mattress.
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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) | 1982-03-12 | 1982-09-11 | 1983-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-12 | 1986-09-11 | 1987-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-12 | 1990-09-11 | 1991-03-13 | $7700.00 | Window Closed / Lapsed |