US4451240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aquatic mat
Assignee: Advanced Sports Corp
•
Filing: 1981-05-27
•
Granted: 1984-05-29
•
Expires: 2001-05-27
Abstract
Abstract A buoyant, flexible, resilient aquatic mat for use on water surfaces adapted to support one or more persons. The mat comprises an elongated slab and a headrest formed of the same material. The material of the mat comprises a unicellular, non-water absorbent, plastic foam. The material comprising the mat may have a tough plastic coating over the entire surface or by use of a suitable plastic foam material the material comprising the mat may be used without a coating. A series of parallel grooves with rounded inner surfaces extends into the mat from its lower surface. The grooves formed with heated rounded bars to provide density increased skin surfaces in areas of the grooves.
Inventors
- 👤 Robert L. Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:57
CPC Classifications
A; A47; A47C; A47C15/00; A47C15/004; A47C15/006; A47C27/00; A47C27/14; A47C27/142; A47C27/146; B; B63; B63B; B63B34/00; B63B34/50
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
107 words
An aquatic floatation mat capable of floating in water and supporting one or more persons, comprising an elongated planar member having top and bottom planar surfaces and a headrest secured to and extending from an end portion of said planar member; said planar member and said headrest formed from closed cell plastic foam slab members, which are flexible, resilient and non-water absorbent; said headrest slab member having ends thereof secured to an end portion of said planar member, said elongated planar member having transverse grooves formed in the elongated planar member; said grooves being spaced so as to enable the aquatic mat to be easily rolled up.
Claim 2
Dependent Claim
107 words
An aquatic floatation mat capable of floating in water and supporting one or more persons, comprising an elongated planar member having top and bottom planar surfaces and a headrest secured to and extending from an end portion of said planar member; said planar member and said headrest formed from closed cell plastic foam slab members, which are flexible, resilient and non-water absorbent; said headrest slab member having ends thereof secured to an end portion of said planar member, said elongated planar member having transverse grooves formed in the elongated planar member; said grooves being spaced so as to enable the aquatic mat to be easily rolled up.
Claim 3
Dependent Claim
23 words
The aquatic mat of claim 1 wherein said grooves extend from about one-third to about two-thirds through a thickness of the planar member.
Claim 4
Dependent Claim
93 words
The aquatic mat of claim 1 wherein the headrest is curved around an end portion of said planar member, the ends of said headrest are secured to the top and bottom planar surfaces at an intermediate portion near the said end portion of said planar member, and the end edge of said planar member is secured to an inner surface of said curved headrest slab member thereby forming two transverse voids, wherein one void is above said top planar surface and one void is below said bottom planar surface of said planar member.
Claim 5
Dependent Claim
21 words
The aquatic mat of claim 1 wherein the plastic foam material has a surface coating of a tough pliable, plastic material.
Claim 6
Dependent Claim
18 words
The aquatic mat of claim 4, wherein said plastic coating material is firmly adherent to said plastic foam.
Claim 7
Dependent Claim
14 words
The aquatic mat of claim 4, wherein said plastic coating is a sprayed coating.
Claim 8
Dependent Claim
14 words
The aquatic mat of claim 4, wherein said plastic coating is a dipped coating.
Claim 9
Dependent Claim
91 words
The aquatic mat of claim 1 wherein said headrest comprises a curved slab member on each said top and bottom planar surface at said end portion of said planar member, one end of each said respective slab member secured to the said end portion of said respective planar surface and the other end of each said respective slab member secured to an intermediate portion of said respective planar surface near said end portion thereby forming two transverse voids, wherein one void is above and one void is below said planar member.
Claim 10
Dependent Claim
67 words
The aquatic mat of claim 1 wherein said headrest comprises one curved slab member on said top planar surface of said planar member, one end of said slab member secured to the end portion of said top planar surface and the other end secured to an intermediate portion of said top planar surface near said end portion thereby forming one transverse void above said top planar surface.
Claim 11
Dependent Claim
34 words
The aquatic mat of claim 9, wherein said headrest comprises end members enclosing said transverse void to form an air chamber, and vent holes disposed through said planar member communicating with said air chamber.
Claim 12
Dependent Claim
66 words
The aquatic mat of claim 1 wherein said headrest comprises one curved slab member on said top planar surface of said planar member, one end of said slab member secured to the end edge of said planar member and the other end secured to an intermediate portion of said top planar surface near said end portion thereby forming one transverse void above said top planar surface.
Claim 13
Dependent Claim
14 words
The aquatic mat of claim 1 wherein said plastic foam is produced from polyvinylchloride.
Claim 14
Dependent Claim
20 words
The aquatic mat of claim 1 wherein said headrest comprises end members enclosing transverse voids to form an air chamber.
Claim 15
Dependent Claim
36 words
The aquatic mat of claim 13, wherein said headrest has an enclosed transverse void disposed below the bottom planar surface and vent holes provided in the bottom portion of said headrest communicate with said enclosed void.
Claim 16
Dependent Claim
24 words
The aquatic mat of claim 1, wherein said transverse grooves are provided by placing grooves on one planar surface of said elongated planar member.
Claim 17
Dependent Claim
20 words
The aquatic mat of claim 15, wherein one groove is provided equidistant from the ends of the elongated planar member.
Claim 18
Dependent Claim
31 words
The aquatic mat of claim 1, wherein said transverse grooves are provided by placing grooves on both respective planar surfaces of said elongated planar member equidistant into said respective planar surfaces.
Claim 19
Dependent Claim
45 words
The aquatic mat of claim 17, wherein two transverse grooves are provided by placing one groove in each planar surface of the elongated planar member equidistant from the ends of the elongated planar member; said grooves being equidistant into said respective planar surfaces and opposed.
Claim 20
Dependent Claim
13 words
The aquatic mat of claim 1, wherein the grooves are of varied depth.
Claim 21
Dependent Claim
19 words
The aquatic mat of claim 1, wherein the grooves extend about half-way through a thickness of the planar member.
Claim 22
Dependent Claim
18 words
The aquatic mat of claim 1, wherein the grooves extend about one-third of the way through the thickness.
Claim 23
Dependent Claim
17 words
The apparatus of claim 1, wherein about one-third of a thickness of the planar member remains ungrooved.
Claim 24
Dependent Claim
25 words
The aquatic mat of claim 1, wherein the grooves are spaced at intervals of from about 6 to about 18 inches along the planer member.
Claim 25
Dependent Claim
21 words
The aquatic mat of claim 1, wherein the grooves are spaced at intervals of about 1 foot along the planar member.
Claim 26
Dependent Claim
15 words
The apparatus of claim 1 wherein the grooves extend between lateral edges of the mat.
Claim 27
Dependent Claim
16 words
The apparatus of claim 1 wherein the grooves terminate short of lateral edges of the mat.
Claim 28
Dependent Claim
13 words
The apparatus of claim 1 wherein at least one groove has varied depth.
Claim 29
Dependent Claim
13 words
The apparatus of claim 1 wherein grooves are spaced evenly along the mat.
Claim 30
Dependent Claim
25 words
The apparatus of claim 1 wherein grooves are spaced in increasing intervals from one longitudinal end portion of the mat to another longitudinal end portion.
Claim 31
Dependent Claim
10 words
The apparatus of claim 1 wherein grooves have varying depth.
Claim 32
Dependent Claim
21 words
The apparatus of claim 1 wherein grooves have depths which vary according to displacement from one longitudinal end of the mat.
References Cited (Backward Citations)
CA601681A
Cited
US1723473A
Cited
US2167178A
Cited
DE1073169B
Cited
GB1145971A
Cited
US3369262A
Cited
US3400415A
Cited
US3512190A
Cited
US3639927A
Cited
US3623170A
Cited
US4149919A
Cited
US4006503A
Cited
US4138753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-29 | 1987-11-28 | 1988-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-29 | 1991-11-28 | 1992-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-29 | 1995-11-28 | 1996-05-29 | $7700.00 | Window Closed / Lapsed |