US4723502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubber boat
Assignee: Okamoto Industries Inc
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Filing: 1986-12-30
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Granted: 1988-02-09
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Expires: 2006-12-30
Abstract
Abstract Disclosed herein is a rubber boat including a boat body composed of a ring-shaped air barrel and a bottom cloth which is provided to be spread on the lower surface of the air barrel and has a mounting opening for receiving an air mat; and a boat bottom composed of the air mat. The air mat is fitted into the mounting opening, and the peripheral portion of the air mat and the marginal portion around the mounting opening are connected together by a connecting cord in such a manner as to define a drain space therebetween.
Inventors
- 👤 Tadayoshi Sayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:53
CPC Classifications
B; B63; B63B; B63B7/00; B63B7/06; B63B7/08; B63B7/082
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
80 words
A rubber boat comprising a boat body including a bottom cloth which has a mounting opening and a mounting piece surrounding said mounting opening; and a boat bottom member composed of an air mat having a peripheral lug piece extending beyond said opening and overlapping said mounting piece which is adapted to be connected with said mounting piece by a connecting cord in such a manner as to define a drain space between said mounting piece and said air mat.
Claim 2
Dependent Claim
80 words
A rubber boat comprising a boat body including a bottom cloth which has a mounting opening and a mounting piece surrounding said mounting opening; and a boat bottom member composed of an air mat having a peripheral lug piece extending beyond said opening and overlapping said mounting piece which is adapted to be connected with said mounting piece by a connecting cord in such a manner as to define a drain space between said mounting piece and said air mat.
Claim 3
Dependent Claim
165 words
A rubber boat comprising a boat body including an air barrel which is upwardly inclined at the front and rear portions and a bottom cloth which is spred on said air barrel and has a mounting opening formed substantially in the whole surface of said bottom cloth along said air barrel and a mounting piece surrounding said mounting opening; and an air mat having air chambers and adapted to be fitted into said mounting opening, the air chambers being smaller in diameter in the front and rear portions of said air mat than in the central portion thereof, said air mat having a lug piece adapted to be connected with said mounting piece by a connecting cord in such a manner as to define a drain space between said mounting piece and said air mat; said lug piece overlapping said mounting piece for connection together by said connecting cord in the drain space between said mounting piece and said lug piece of the air mat.
Claim 4
Dependent Claim
165 words
A rubber boat comprising a boat body including an air barrel which is upwardly inclined at the front and rear portions and a bottom cloth which is spred on said air barrel and has a mounting opening formed substantially in the whole surface of said bottom cloth along said air barrel and a mounting piece surrounding said mounting opening; and an air mat having air chambers and adapted to be fitted into said mounting opening, the air chambers being smaller in diameter in the front and rear portions of said air mat than in the central portion thereof, said air mat having a lug piece adapted to be connected with said mounting piece by a connecting cord in such a manner as to define a drain space between said mounting piece and said air mat; said lug piece overlapping said mounting piece for connection together by said connecting cord in the drain space between said mounting piece and said lug piece of the air mat.
Claim 5
Dependent Claim
35 words
The rubber boat as claimed in claim 2, wherein said air mat is provided with straightening covers attached to the bottom surfaces of the connections between the central portion and the front and rear portions.
Claim 6
Dependent Claim
153 words
A rubber boat comprising a boat body including an air barrel which is upwardly inclined at the front and rear portions and a bottom cloth which is spread on said air barrel and has a mounting opening formed substantially in the whole surface of said bottom cloth along said air barrel and a mounting piece surrounding said mounting opening; and an air mat which is separated into front, central and rear members, said central member including air chambers extending longitudinally, said front and rear members including air chambers extending along the shorter side, all of said members being connected together by a connecting cord and fitted into said mounting opening, said air mat having a lug piece adapted to overlap said mounting piece to be connected together by a connecting cord in such a manner as to define a drain space between said mounting piece and said lug piece of the air mat.
Claim 7
Dependent Claim
153 words
A rubber boat comprising a boat body including an air barrel which is upwardly inclined at the front and rear portions and a bottom cloth which is spread on said air barrel and has a mounting opening formed substantially in the whole surface of said bottom cloth along said air barrel and a mounting piece surrounding said mounting opening; and an air mat which is separated into front, central and rear members, said central member including air chambers extending longitudinally, said front and rear members including air chambers extending along the shorter side, all of said members being connected together by a connecting cord and fitted into said mounting opening, said air mat having a lug piece adapted to overlap said mounting piece to be connected together by a connecting cord in such a manner as to define a drain space between said mounting piece and said lug piece of the air mat.
Claim 8
Dependent Claim
169 words
A rubber boat comprising a boat body including an air barrel which is upwardly inclined at the front and rear portions and a bottom cloth which is spread on said air barrel and has a mounting opening formed substantially in the whole surface of said bottom cloth along said air barrel and a mounting piece surrounding said mounting opening; and an air mat which is separated into front, central and rear members, said central member including air chambers extending longitudinally, said front and rear members including air chambers extending along the shorter side, all of said members being connected together by a connecting cord and fitted into said mounting opening, said air mat having a lug piece adapted to overlap said mounting piece to be connected together by a connecting cord in such a manner as to define a drain space between said mounting piece and said lug piece of the air mat; said air mat being provided with straightening covers attached to the bottom surfaces of the connections.
Claim 9
Dependent Claim
169 words
A rubber boat comprising a boat body including an air barrel which is upwardly inclined at the front and rear portions and a bottom cloth which is spread on said air barrel and has a mounting opening formed substantially in the whole surface of said bottom cloth along said air barrel and a mounting piece surrounding said mounting opening; and an air mat which is separated into front, central and rear members, said central member including air chambers extending longitudinally, said front and rear members including air chambers extending along the shorter side, all of said members being connected together by a connecting cord and fitted into said mounting opening, said air mat having a lug piece adapted to overlap said mounting piece to be connected together by a connecting cord in such a manner as to define a drain space between said mounting piece and said lug piece of the air mat; said air mat being provided with straightening covers attached to the bottom surfaces of the connections.
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) | 1991-02-08 | 1991-08-10 | 1992-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-08 | 1995-08-10 | 1996-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-08 | 1999-08-10 | 2000-02-09 | $7700.00 | Window Closed / Lapsed |