US4370768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damped fluid displacement support system
Assignee: MUL Acquisition Corp II
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Filing: 1980-04-25
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Granted: 1983-02-01
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Expires: 2000-04-25
Abstract
Abstract A liquid-sealed envelope contains a core of resilient urethane foam saturated with water, all air having been expelled therefrom. This assembly is enclosed within an outer casing of a resilient material to which the envelope is glued.
Inventors
- 👤 William S. Saloff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:22
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/08; A47C27/088; A47C27/085
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
81 words
A damped liquid displacement support system comprised of: an envelope of flexible material; a core of resilient liquid-absorbent material occupying substantially all of the space within the envelope; a liquid substantially saturating the core; a valve mounted in the envelope for communication between its interior and its ambience for admitting and discharging liquids and gases; and an envelope provided with at least one interior divider so as to form at least two compartments therein, each compartment having its own liquid-saturated core.
Claim 2
Dependent Claim
81 words
A damped liquid displacement support system comprised of: an envelope of flexible material; a core of resilient liquid-absorbent material occupying substantially all of the space within the envelope; a liquid substantially saturating the core; a valve mounted in the envelope for communication between its interior and its ambience for admitting and discharging liquids and gases; and an envelope provided with at least one interior divider so as to form at least two compartments therein, each compartment having its own liquid-saturated core.
Claim 3
Dependent Claim
25 words
The invention of claim 1 wherein a relatively thick casing of resilient material surrounds the envelope, and said envelope is adhesively attached to the casing.
Claim 4
Dependent Claim
99 words
A damped liquid displacement support system comprised of: an envelope of flexible material; a core of resilient liquid-absorbent material occupying substantially all of the space within the envelope; a liquid substantially saturating the core; a valve mounted in the envelope for communicating between its interior and its ambience for admitting and discharging liquids and gases; and a relatively thick casing of resilient material surrounding the envelope, said casing having a top portion lying above the core and a bottom portion lying below the core, said bottom and top portions each being substantially equal in thickness to the core itself.
Claim 5
Dependent Claim
99 words
A damped liquid displacement support system comprised of: an envelope of flexible material; a core of resilient liquid-absorbent material occupying substantially all of the space within the envelope; a liquid substantially saturating the core; a valve mounted in the envelope for communicating between its interior and its ambience for admitting and discharging liquids and gases; and a relatively thick casing of resilient material surrounding the envelope, said casing having a top portion lying above the core and a bottom portion lying below the core, said bottom and top portions each being substantially equal in thickness to the core itself.
Claim 6
Dependent Claim
14 words
The invention of claim 3 wherein the envelope is adhesively attached to the casing.
Claim 7
Dependent Claim
11 words
The invention of claim 4 wherein the system is a mattress.
Claim 8
Dependent Claim
11 words
The invention of claim 4 wherein the system is a cushion.
Claim 9
Dependent Claim
13 words
The invention of claim 1 or 3 wherein the system is a mattress.
Claim 10
Dependent Claim
13 words
The invention of claim 1 or 3 wherein the system is a cushion.
Claim 11
Independent Claim
116 words
A method of fabricating a damped fluid displacement system comprising the steps of: a. placing at least two cores of resilient liquid-absorbent material within an unsealed envelope of liquid-impervious material, said cores substantially filling the envelope; b. inserting a divider between the cores, said divider being attached to the envelope so as to prevent any communication between the core segments; c. compressing the envelope and the cores so as to force substantially all gases to be discharged therefrom; d. sealing the envelope; e. submerging the envelope and the cores in a liquid, partially opening the envelope to admit liquid until the cores will absorb no more liquid and are thus substantially saturated; f. closing the envelope.
Claim 12
Independent Claim
116 words
A method of fabricating a damped fluid displacement system comprising the steps of: a. placing at least two cores of resilient liquid-absorbent material within an unsealed envelope of liquid-impervious material, said cores substantially filling the envelope; b. inserting a divider between the cores, said divider being attached to the envelope so as to prevent any communication between the core segments; c. compressing the envelope and the cores so as to force substantially all gases to be discharged therefrom; d. sealing the envelope; e. submerging the envelope and the cores in a liquid, partially opening the envelope to admit liquid until the cores will absorb no more liquid and are thus substantially saturated; f. closing the envelope.
Claim 13
Dependent Claim
22 words
The method of claim 9 wherein a casing surrounds the envelope and including the step of: attaching the envelope to the casing.
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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) | 1986-01-31 | 1986-08-02 | 1987-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-31 | 1990-08-02 | 1991-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-31 | 1994-08-02 | 1995-02-01 | $7700.00 | Window Closed / Lapsed |