US4069523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bathtub with cushioned liner of foam plastic
Assignee: Individual
•
Filing: 1974-12-23
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Granted: 1978-01-24
•
Expires: 1994-12-23
Abstract
Abstract A tub having a shock-absorbing shell constructed from a rigid cellular material and an outer cushioning layer laminated on inner concavity-forming surfaces of the shell. The latter is constructed from a soft, flexible, closed-cell cellular material having a durable, fluid-tight, traction providing, integral skin forming the outer surface of the concavity in the tub.
Inventors
- 👤 Louis H. Ridgeway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:19
CPC Classifications
A; A47; A47K; A47K3/00; A47K3/02; B; B29; B29C; B29C51/00; B29C51/26; B29C51/261; B29C51/262; B29C51/30; B29C51/36; B29L; B29L2031/00; B29L2031/769; B29L2031/7692
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
153 words
A bathtub construction providing improved comfort and safety for a bather comprising a rigid outer shell having opposed front and rear walls, opposed side walls, and a bottom wall, a layer of soft, resilient material having an outer, water-impervious surface and secured to the inner surfaces of said walls to define a water-retaining cavity for supportably containing the body of a bather, the inner surface of said rear wall sloping forwardly and downwardly to said bottom wall to support the back of a bather in a semi-reclined position in the cavity, elongated groove in said rear wall inner surface extending upwardly from said bottom wall for receiving the vertebrae of a bather when in semi-reclined position, and drain outlet means for said cavity recessed in the lower portion of said groove to prevent contact of said drain outlet means with the body of a bather when in said semi-reclined position in the cavity.
Claim 2
Dependent Claim
153 words
A bathtub construction providing improved comfort and safety for a bather comprising a rigid outer shell having opposed front and rear walls, opposed side walls, and a bottom wall, a layer of soft, resilient material having an outer, water-impervious surface and secured to the inner surfaces of said walls to define a water-retaining cavity for supportably containing the body of a bather, the inner surface of said rear wall sloping forwardly and downwardly to said bottom wall to support the back of a bather in a semi-reclined position in the cavity, elongated groove in said rear wall inner surface extending upwardly from said bottom wall for receiving the vertebrae of a bather when in semi-reclined position, and drain outlet means for said cavity recessed in the lower portion of said groove to prevent contact of said drain outlet means with the body of a bather when in said semi-reclined position in the cavity.
Claim 3
Dependent Claim
44 words
A bathtub construction as defined in claim 1 wherein said drain outlet means includes conduit means for discharging water from the cavity, and a closure cover operatively attached to the upper portion of said conduit means to selectively prevent the passage of water therethrough.
Claim 4
Dependent Claim
38 words
A bathtub construction as defined in claim 1 including a recess in an upper portion of said rear wall for supportably receiving the head of a bather in semi-reclined position, said elongated groove and communicating with said recess.
Claim 5
Dependent Claim
38 words
A bathtub construction as defined in claim 1 including a shelf having a generally horizontal surface extending along one of said side walls in the cavity and having outlet means therein for overflow of water from the cavity.
Claim 6
Dependent Claim
61 words
A bathtub construction as defined in claim 4 wherein said rigid outer shell comprises a light weight, shock-absorbing material, and including conduit means embedded in said shockabsorbing material and communicating said drain outlet means and said outlet means in said shelf, and further extending from said shock-absorbing material for discharge of water from said drain and shelf outlet means to waste.
Claim 7
Dependent Claim
58 words
A bathtub construction as defined in claim 1 wherein said layer of soft, resilient material comprises an inner portion of relatively soft, resilient, closed-cell, cellular material permanently secured to the inner surfaces of said walls of said outer shell and an outer portion comprised of a flexible sheet of water-impervious plastic permanently secured to the closed-cell, cellular material.
Claim 8
Dependent Claim
17 words
A bathtub construction as defined in claim 1 wherein said outer shell comprises a shock-absorbing cellular plastic.
Claim 9
Dependent Claim
39 words
A bathtub construction as defined in claim 1 wherein the inner surface of said bottom wall slopes downwardly from said front wall to said rear wall and drain outlet means to facilitate the draining of water from said cavity.
Claim 10
Dependent Claim
76 words
A bathtub construction as defined in claim 1 wherein said drain outlet means is located in said bottom wall of said shell and is recessed within the lower portion of said downwardly extending groove in said rear wall, said outlet means including an opening in said bottom wall, a pipe secured in said opening and a closure cover operatively secured to the upper opening in said pipe and positionable to prevent the passage of water therethrough.
Claim 11
Dependent Claim
139 words
A bathtub construction providing improved comfort and safety for a bather comprising a rigid shell having an open top and defining a water-receiving cavity for supportably containing the body of a bather, a portion of the inner surface of the cavity sloping downwardly and inwardly from said open top toward the bottom portion of the cavity for supporting the back of a bather in semi-reclined position in the cavity, and an elongated groove extending upwardly in said sloping surface portion from the bottom of the cavity to receive the vertebrae of a bather when in semi reclined position, and outlet means for draining water from the cavity located in the bottom of the cavity and recessed in said groove to prevent contact of the body of the bather with said outlet means when supported in said semi-reclined position therein.
Claim 12
Dependent Claim
139 words
A bathtub construction providing improved comfort and safety for a bather comprising a rigid shell having an open top and defining a water-receiving cavity for supportably containing the body of a bather, a portion of the inner surface of the cavity sloping downwardly and inwardly from said open top toward the bottom portion of the cavity for supporting the back of a bather in semi-reclined position in the cavity, and an elongated groove extending upwardly in said sloping surface portion from the bottom of the cavity to receive the vertebrae of a bather when in semi reclined position, and outlet means for draining water from the cavity located in the bottom of the cavity and recessed in said groove to prevent contact of the body of the bather with said outlet means when supported in said semi-reclined position therein.
Claim 13
Dependent Claim
22 words
A bathtub construction as defined in claim 10 wherein said inner surface of the shell comprises a water-impervious, soft, resilient cushioning layer.
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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) | 1981-01-23 | 1981-07-25 | 1982-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-23 | 1985-07-25 | 1986-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-23 | 1989-07-25 | 1990-01-24 | $7700.00 | Window Closed / Lapsed |