US4509218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drain pipes for emptying waveless waterbed mattresses
Assignee: HI-LIFE PRODUCTS Inc
•
Filing: 1983-03-18
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Granted: 1985-04-09
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Expires: 2003-03-18
Abstract
Abstract A waterbed mattress system including wave dampening filler material is described which can be rapidly drained of the liquid contained therein. The invented system is provided with at least one perforated pipe which channels the liquid to the drain port. The perforated pipe and method for using the same are also described.
Inventors
- 👤 Albert L. Rhoton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:17
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/08; A47C27/085; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86348; Y10T29/00; Y10T29/49; Y10T29/49716
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
96 words
A waterbed mattress system which dampens wave motion and drains rapidly, comprising: a sealable liquid enclosure means with at least one drain port; wave dampening filler disposed inside said enclosure means; at least two perforated pipes disposed inside said enclosure means, said pipes disposed horizontally and adjacent said dampening filler, and each of said pipes having an open end disposed near said drain port and extending therefrom in a fanlike manner, whereby said pipes provide a relatively low resistance path for passing liquid contained in said enclosure means to said drain port, to be removed therefrom.
Claim 2
Dependent Claim
96 words
A waterbed mattress system which dampens wave motion and drains rapidly, comprising: a sealable liquid enclosure means with at least one drain port; wave dampening filler disposed inside said enclosure means; at least two perforated pipes disposed inside said enclosure means, said pipes disposed horizontally and adjacent said dampening filler, and each of said pipes having an open end disposed near said drain port and extending therefrom in a fanlike manner, whereby said pipes provide a relatively low resistance path for passing liquid contained in said enclosure means to said drain port, to be removed therefrom.
Claim 3
Dependent Claim
26 words
The waterbed mattress system defined in claim 1, wherein said wave dampening filler comprises a fiber product which forms a mesh like barrier to wave motion.
Claim 4
Dependent Claim
15 words
The waterbed mattresses system defined in claim 1, wherein said wave dampening filler comprises foam.
Claim 5
Dependent Claim
26 words
The waterbed mattress system defined in claim 1, wherein each of said perforated pipes comprise a plurality of holes about its circumference and along its length.
Claim 6
Dependent Claim
17 words
The waterbed mattress system defined in claim 1 wherein said pipe is removable from said enclosure means.
Claim 7
Dependent Claim
12 words
The waterbed mattress system defined in claim 1, comprising two perforated pipes.
Claim 8
Dependent Claim
15 words
The waterbed mattress system of claim 1, comprising two long pipes and two short pipes.
Claim 9
Independent Claim
88 words
A method for rapidly draining liquid from a waterbed having wave dampening material disposed therein, comprising: inserting at least two perforated pipes into a drain port of said mattress; disposing said pipes in said mattress such that one end of said pipe is disposed near but spaced from said drain port and the other end of said pipe extends outward from said drain port in a fan like manner; attaching draining means to said drain port; operating said draining means to remove liquid contained in said mattress therefrom.
Claim 10
Independent Claim
88 words
A method for rapidly draining liquid from a waterbed having wave dampening material disposed therein, comprising: inserting at least two perforated pipes into a drain port of said mattress; disposing said pipes in said mattress such that one end of said pipe is disposed near but spaced from said drain port and the other end of said pipe extends outward from said drain port in a fan like manner; attaching draining means to said drain port; operating said draining means to remove liquid contained in said mattress therefrom.
Claim 11
Dependent Claim
18 words
The method of claim 8, wherein two perforated pipes are inserted into the drain port of said mattress.
Claim 12
Dependent Claim
29 words
The method of claim 8, wherein said pipe comprises a plastic pipe having a pluralty of holes disposed about its circumference and along its length in a spaced-apart manner.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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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) | 1988-04-08 | 1988-10-08 | 1989-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-08 | 1992-10-08 | 1993-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-08 | 1996-10-08 | 1997-04-09 | $7700.00 | Window Closed / Lapsed |