US4222137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal pressure adjustable bed
Assignee: NIHON BED Manufacturing CO Ltd
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Filing: 1979-01-05
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Granted: 1980-09-16
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Expires: 1999-01-05
Abstract
Abstract A bed adjustable in hardness distribution of its surface. An elastic member is interposed between a surface side member and a bottom plate of the bed, and the bottom plate is divided in the direction of its plane and each of the bottom plates thus divided is made vertically adjustable to allow the internal pressure of the said elastic member to be changed, so that the internal pressure of each part against the urging force from the surface is changed and the depression amount of the bed surface becomes uniform.
Inventors
- 👤 Nobuo Usami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:43
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/14; A47C27/148; A47C23/00; A47C23/04; A47C23/043; A47C23/0435; Y; Y10; Y10S; Y10S5/00; Y10S5/935; Y10S5/936
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
81 words
An internal pressure-adjustable bed comprising: a plurality of base plates arranged longitudinally of the bed and extending transversely between the sides thereof, each of said base plates being individually movable vertically; a resilient mattress carried on said base plates; means for constraining the upper surface of said mattress to maintan same in a substantially horizontal disposition; and means for effecting selective vertical movement of said base plates to thereby enable selective longitudinal regulation of the internal pressure of said resilient mattress.
Claim 2
Dependent Claim
81 words
An internal pressure-adjustable bed comprising: a plurality of base plates arranged longitudinally of the bed and extending transversely between the sides thereof, each of said base plates being individually movable vertically; a resilient mattress carried on said base plates; means for constraining the upper surface of said mattress to maintan same in a substantially horizontal disposition; and means for effecting selective vertical movement of said base plates to thereby enable selective longitudinal regulation of the internal pressure of said resilient mattress.
Claim 3
Dependent Claim
18 words
The bed as defined in claim 1, in which said resilient mattress comprises a plurality of coil springs.
Claim 4
Dependent Claim
17 words
The bed as defined in claim 1, in which said resilient mattress comprises an elastic resin layer.
Claim 5
Dependent Claim
62 words
The bed as defined in claim 1, comprising a base frame positioned beneath said base plates and a plurality of clamping string-like elements connected between horizontally-spaced locations of said upper surface of the mattress and said base frame, whereby the upper surface of said mattress is constrained to maintain a substantially horizontal disposition independently of the vertical movement of said base plates.
Claim 6
Dependent Claim
25 words
The bed as defined in claim 1, in which said base plates are connected together so as to permit bending of the respective adjacent sides.
Claim 7
Dependent Claim
75 words
The bed as defined in claim 4, in which said means for effecting selective vertical movement of said base plates includes an externally threaded vertical shaft, an internally threaded member fixed to the base frame of the bed and adapted to threadedly receive said vertical shaft, the upper end of said externally threaded shaft supporting each said base plate, whereby threaded movement of said externally threaded shaft effects vertical movement of each said base plate.
Claim 8
Dependent Claim
80 words
The bed as defined in claim 2, in which said means for effecting selective vertical movement of said base plates includes cam means having a generally spiral cam face, said cam means being pivotably secured to a part of the base frame, and slidable rods which are in abutment with said cam face and which are attached to respective ones of said movable base plates so as to project therefrom, said movable base plates supporting said coiled springs from below.
Claim 9
Dependent Claim
97 words
The bed as defined in claim 4, in which said means for effecting selective vertical movement of said base plates includes cam means having a cam face which is in the general form of a worm gear, said cam means being pivoted to a pivot shaft so as to be axially slidable thereon while being prevented from rotation, said pivot shaft being journaled in part of the base frame, and slidable rods which are in abutment with said cam face and which are attached to respective ones of said movable base plates so as to project therefrom.
Claim 10
Dependent Claim
62 words
The bed as defined in claim 4, in which said means for effecting selective vertical movement of said base plates includes lever members interposed between said base plates and the base frame of the bed, said lever members being adapted to pivot about one end thereof by the action of a threaded shaft cooperating therewith to thereby change their angles of tilt.
Claim 11
Dependent Claim
75 words
The bed as defined in claim 9, in which said threaded shaft extends to the sides of the bed and is covered at the ends thereof with a cover capable of being opened and closed, said cover being provided on the sides of the bed, and further including a handle which is adapted to be inserted in an opened condition of said cover to be engaged with said threaded shaft for the turning of same.
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) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |