US4291423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat reclamation for shower baths, sinks, and other fluid receiving vessels
Assignee: Individual
•
Filing: 1980-03-31
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Granted: 1981-09-29
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Expires: 2000-03-31
Abstract
Abstract A shower bath, sink, or other fluid receiving vessel is described wherein heat is reclaimed from the drain fluid to warm the incoming cold water to reduce the amount of hot water which must be mixed in to produce water of the temperature desired for use within the vessel. The improvement consists of a cover pan for collecting the received fluid and depositing it on a particular region of the vessel floor which is contoured to direct the received fluid along a particular channel to a drain. The cold water supply tube is positioned within the channel in contact with the draining fluid. The warmer drain fluid transfers heat energy into the cooler water flowing within the submerged cold water supply tube.
Inventors
- 👤 Mahlon T. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:05
CPC Classifications
E; E03; E03C; E03C1/00; F; F24; F24D; F24D17/00; F24D17/0036; F24D17/0052; F28; F28D; F28D21/00; F28D21/0001; F28D21/0012; E03C2001/005; Y; Y02; Y02B; Y02B10/00; Y02B10/70; Y02B30/00; Y02B30/18; Y02B30/56
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
140 words
A fluid receiving vessel incorporating an energy exchange device for reclaiming heat energy comprising: (a) a pan for collecting the received fluid and depositing it on a particular region of (b) a contoured floor for directing the flow of the received fluid along a particular channel containing (c) tubing positioned within said channel whereby the fluid flowing within said channel is in contact with the exterior surface of said tubing, the said tubing conveying fluid at a temperature different from the received fluid such that there will exist a transfer of heat energy between the fluid flowing within the said channel and the fluid flowing within said tubing, thereby heating or cooling the fluid flowing within the said tubing and reducing the amount of heating or cooling otherwise required in the process utilizing the fluid flowing within the said tubing.
Claim 2
Dependent Claim
50 words
The fluid receiving vessel of claim 1 wherein one end of the said tubing is connected to a source of cold water and the other end is connected to a valving means wherein hot water is added, the resulting warm water being utilized and then collected by the said pan.
Claim 3
Dependent Claim
24 words
The pan of claim 1 wherein said pan is removable to enable cleaning of the said channel and external surfaces of the said tubing.
Claim 4
Dependent Claim
17 words
The pan means of claim 1 wherein the top surface of said pan is provided with non-slip.
Claim 5
Dependent Claim
59 words
The fluid receiving vessel of claim 1 wherein the fluid flowing within the said channel exits the vessel through a drain pipe means sealed to said fluid receiving vessel by the injection of a sealant into the region formed by the exterior surface of said drain pipe means and the inside surface of a hole penetrating the said vessel.
Claim 6
Dependent Claim
72 words
The fluid receiving vessel of claim 1 wherein the fluid flowing within the said channel exists the vessel through a drain pipe means sealed to said fluid receiving vessel by the compression of a pliable material means in the space formed by the exterior surface of said drain pipe means and a surface of the said vessel, the force for the said compression being provided by the rotation of a threaded means.
Claim 7
Dependent Claim
17 words
The fluid receiving vessel of claim 1 wherein said vessel forms the base of a shower bath.
Claim 8
Dependent Claim
16 words
The fluid receiving vessel of claim 1 wherein said vessel forms the base of a sink.
Claim 9
Dependent Claim
29 words
The fluid receiving vessel of claim 1 for use within an existing fixture wherein the said channel is routed to drain the fluid directly into the existing fixture drain.
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) | 1984-09-28 | 1985-03-30 | 1985-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-28 | 1989-03-30 | 1989-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-28 | 1993-03-30 | 1993-09-29 | $7700.00 | Window Closed / Lapsed |