Patent US3722444A successfully refreshed from Google Patents.
US3722444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structure of under-water vehicle
Assignee: Komatsu Ltd
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Filing: 1971-04-20
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Granted: 1973-03-27
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Expires: 1991-04-20
Abstract
Abstract The present invention relates to an under-water vehicle structure comprising connecting, through sealing material, open end fringe of the upper box whose lower side is opened to the open end fringe of the lower box whose upper side is opened, said lower box being fixed on the right and left main beams supported on the track-frames.
Inventors
- 👤 K Muraki
- 👤 T Yoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:46
CPC Classifications
B; B63; B63C; B63C11/00; E; E02; E02F; E02F5/00; E02F5/006
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
153 words
An underwater vehicle structure comprising right and left main beams supported on track frames and a lower box which is attached to said main beams, the upper portion of said lower box being opened, an upper box whose lower portion is open, said upper and lower boxes in contacting engagement along the opening peripheries with sealing material therebetween, and binding members connecting the opening peripheries, wherein the lateral cross sections of the upper and lower boxes is semi-cylindrical in form, with flange members projecting perpendicularly out from that portion of each box which defines the opening, and the longitudinal axis of the cylinder formed by the combination of boxes is essentially parallel to the surface upon which the device operates, and wherein an attachment means is formed on said upper box, an air removing means extends up from said attachment means and a shaft projects from the rear surface of the lower box.
Claim 2
Dependent Claim
153 words
An underwater vehicle structure comprising right and left main beams supported on track frames and a lower box which is attached to said main beams, the upper portion of said lower box being opened, an upper box whose lower portion is open, said upper and lower boxes in contacting engagement along the opening peripheries with sealing material therebetween, and binding members connecting the opening peripheries, wherein the lateral cross sections of the upper and lower boxes is semi-cylindrical in form, with flange members projecting perpendicularly out from that portion of each box which defines the opening, and the longitudinal axis of the cylinder formed by the combination of boxes is essentially parallel to the surface upon which the device operates, and wherein an attachment means is formed on said upper box, an air removing means extends up from said attachment means and a shaft projects from the rear surface of the lower box.
Claim 3
Dependent Claim
24 words
An underwater vehicle structure according to claim 1 wherein fastening elements extend from the lower box surface fixing said box to the main beams.
Claim 4
Dependent Claim
37 words
An underwater vehicle structure according to claim 1 wherein the upper and lower boxes are fastened together with fastening means extending through predesigned holes in the flange portions and sealing material, and said sealing material is rubber.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |