US3925835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frameless safety water bed
Assignee: Individual
•
Filing: 1974-07-01
•
Granted: 1975-12-16
•
Expires: 1994-07-01
Abstract
Abstract Plastic sheets bonded together define a main water compartment, a bounding air pressure compartment, and a receptacle extending beneath both such compartments to retain any inadvertently leaking water.
Inventors
- 👤 William Pennington
- 👤 Iii William Pennington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:00
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/08; A47C27/081; A47C27/085; Y; Y10; Y10S; Y10S5/00; Y10S5/932
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
102 words
In a water bed, the combination comprising a. plastic sheet structure defining a main water compartment and an air pressure compartment extending in a generally horizontal loop bounding the water compartment, and b. an additional and separate safety sheet attached to said sheet structure and extending in closely underlying relation to the air and water compartments to receive and retain any water leakage from the water compartment, c. the safety sheet being peripherally bonded to the sheet structure along a locus bounding the main extent of the air compartment and at an elevation generally above the bottom level of the water compartment.
Claim 2
Dependent Claim
102 words
In a water bed, the combination comprising a. plastic sheet structure defining a main water compartment and an air pressure compartment extending in a generally horizontal loop bounding the water compartment, and b. an additional and separate safety sheet attached to said sheet structure and extending in closely underlying relation to the air and water compartments to receive and retain any water leakage from the water compartment, c. the safety sheet being peripherally bonded to the sheet structure along a locus bounding the main extent of the air compartment and at an elevation generally above the bottom level of the water compartment.
Claim 3
Dependent Claim
14 words
The combination of claim 1 wherein the safety sheet consists of flexible plastic material.
Claim 4
Dependent Claim
73 words
The combination of claim 1 wherein the sheet structure includes c. primary plastic sheeting defining a tube forming said air compartment, and d. auxiliary upper and lower plastic sheets extending across the water compartment, the auxiliary upper sheet overlying the tube and bonded thereto and therealong, and the auxiliary lower sheet underlying the tube and bonded thereto and therealong, the safety sheet directly underlying substantially the full extent of the auxiliary lower sheet.
Claim 5
Dependent Claim
35 words
The combination of claim 3 wherein the safety sheet is also bonded to the auxiliary lower sheet directly beneath the lowermost extent of the compartment, and along a loop-shaped locus lengthwise of said air compartment.
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) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |