Patent US3844245A successfully refreshed from Google Patents.
US3844245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means of connecting pusher boat and barge
Assignee: Taisei Sekki Komu KK
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Filing: 1973-01-26
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Granted: 1974-10-29
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Expires: 1993-01-26
Abstract
Abstract A means of connecting a pusher boat and a barge in which the bow of the pusher boat is inserted into a notch formed in the stern portion of the barge, and movable pressing shoes attached on both sides of the bow of said pusher boat are pressed into vertical connecting channels formed within said notch of the barge, thereby the pusher boat and the barge being connected easily and firmly.
Inventors
- 👤 T Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:45
CPC Classifications
B; B63; B63B; B63B35/00; B63B35/66; B63B35/70
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
166 words
A combination of watercraft comprising: a. a barge having a rear portion formed with a notch open in a rearward direction and with two verticaLly elongated channels open toward said notch and facing each other transversely of said direction; b. a pusher boat having a bow portion of a configuration and size to be received in said notch; c. two pressing shoes mounted on said bow portion; and d. pressure-fluid-operated actuating means for moving said pressing shoes in respective, opposite directions between retracted positions outside said channels and inserted positions in said channels respectively while said bow portion is received in said notch, said actuating means holding said pressing shoes in frictional contact with said rear portion in said channels under sufficient pressure to prevent relative rotation between said pressing shoes and said rear portion when said pressing shoes are in the inserted position, said pressing shoes being rotatable on said bow portion to permit relative pitching movement of said barge and of said pusher boat.
Claim 2
Dependent Claim
166 words
A combination of watercraft comprising: a. a barge having a rear portion formed with a notch open in a rearward direction and with two verticaLly elongated channels open toward said notch and facing each other transversely of said direction; b. a pusher boat having a bow portion of a configuration and size to be received in said notch; c. two pressing shoes mounted on said bow portion; and d. pressure-fluid-operated actuating means for moving said pressing shoes in respective, opposite directions between retracted positions outside said channels and inserted positions in said channels respectively while said bow portion is received in said notch, said actuating means holding said pressing shoes in frictional contact with said rear portion in said channels under sufficient pressure to prevent relative rotation between said pressing shoes and said rear portion when said pressing shoes are in the inserted position, said pressing shoes being rotatable on said bow portion to permit relative pitching movement of said barge and of said pusher boat.
Claim 3
Dependent Claim
61 words
A combination as set forth in claim 1, wherein said actuating means include motor means operated by fluid under pressure, and two elongated connecting pins mounted on said bow portion for axial movement by said motor means and for rotation, said pins having respective free end portions, and pivot means pivotally connecting said pressing shoes to said free end portions respectively.
Claim 4
Dependent Claim
96 words
A combination as set forth in claim 1, wherein said rear portion has two pairs of vertically elongated edges in said notch, the edges of each pair bounding a respective one of said channels therebetween, one edge of each pair being offset rearwardly from the other edge, and the width of said notch between said rearwardly offset edges being substantially greater than the width of said notch between said other edges, the width of said notch between said other edges being smaller than the width of said pusher boat as measured over the retracted pressing shoes.
Claim 5
Dependent Claim
22 words
A combination as set forth in claim 1, wherein said channels decrease in width away from said notch in a horizontal plane.
Claim 6
Dependent Claim
35 words
A combination as set forth in claim 4, wherein said pressing shoes taper inward of said channels in said plane when in the inserted position and wedgingly engage said rear portion under said sufficient pressure.
Claim 7
Dependent Claim
16 words
A combination as set forth in claim 5, wherein said channels are of trapezoidal cross section.
Claim 8
Dependent Claim
21 words
A combination as set forth in claim 6, further comprising a high-friction coating of rubber on each of said pressing shoes.
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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |