Patent US3658286A successfully refreshed from Google Patents.
US3658286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for positioning a hull block
Assignee: Kawasaki Heavy Industries Ltd
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Filing: 1970-03-27
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Granted: 1972-04-25
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Expires: 1990-03-27
Abstract
Abstract A block having three dimensional curves thereon is supported on a table by means of vertically extending struts which are adjustable to support the block and the plates forming the block in proper abutting relation of the plates in welding the abutting plates. The table is supported centrally on a universal joint so that the table may swing about either of two intersecting axes and to positively move the table so that any particular portion of the seam of the block is horizontal and this is accomplished by pushing and pulling devices which may be hydraulic cylinders reacting against a base and against the table with one push-pull device spaced from one axis and the other push-pull device spaced from the other axis so that the universal joint supporting the table is not in alignment with the push-pull devices. It is easier to weld a seam when the seam is horizontal and any portion of the hull block can be positioned by means of the push-pull devices to make any portion horizontal or such portion being welded and by proper manipulation of the push-pull devices the portion being welded can always be horizontal for a maximum welding efficiency.
Inventors
- 👤 Kiyoshi Terai
- 👤 Takashi Itoh
- 👤 Ryuichi Sagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:24
CPC Classifications
B; B23; B23Q; B23Q15/00; B23Q15/20; B23Q15/22; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/50; B23Q1/54; B23Q1/545; B63; B63C; B63C5/00; B63C5/02; B63C2005/025
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
190 words
A supporting structure for a block having three dimensional curves comprising a table, means on said table for support of the curved surface of the block to provide adequate support for the plates forming the block so that seams to be welded will be in substantially abutting relation, a universal joint supporting the table substantially centrally thereof and substantially centrally of the block supported thereby so the center of gravity of the block and table is substantially directly over the universal joint supporting the table for rocking movement of the table about non-parallel axes, a first ram extending from a base or ground to the table offset from the one axis and a second ram extending from said base to the table and offset from said second axis so that the rams and the universal joint supporting the table are out of alignment, means to apply pushing and pulling forces to the rams to thereby rock the table, and means to operate the rams so that a portion of the seam between the plates is substantially horizontal so that welding can be performed on said horizontal portion of the seams.
Claim 2
Dependent Claim
190 words
A supporting structure for a block having three dimensional curves comprising a table, means on said table for support of the curved surface of the block to provide adequate support for the plates forming the block so that seams to be welded will be in substantially abutting relation, a universal joint supporting the table substantially centrally thereof and substantially centrally of the block supported thereby so the center of gravity of the block and table is substantially directly over the universal joint supporting the table for rocking movement of the table about non-parallel axes, a first ram extending from a base or ground to the table offset from the one axis and a second ram extending from said base to the table and offset from said second axis so that the rams and the universal joint supporting the table are out of alignment, means to apply pushing and pulling forces to the rams to thereby rock the table, and means to operate the rams so that a portion of the seam between the plates is substantially horizontal so that welding can be performed on said horizontal portion of the seams.
Claim 3
Dependent Claim
44 words
The invention according to claim 1 in which the level sensitive structure is supported on the block in the area being welded and means reacting to the level indicating device for causing the rocking movement by the pushing and pulling action of the rams.
Claim 4
Dependent Claim
54 words
The invention according to claim 1 in which bar stays or struts extend upwardly from the table and are adjustable as to length so that the curvature of the hull block will be accommodated and so that the abutting edges of the plates will be maintained in the correct position for the final structure.
Claim 5
Dependent Claim
24 words
The invention according to claim 1 in which manual means are provided to cause pushing and pulling action of the pushing and pulling rams.
Claim 6
Dependent Claim
25 words
The invention according to claim 2 in which manual means are provided to cause the pushing and pulling action of the pushing and pulling rams.
Claim 7
Dependent Claim
36 words
The invention according to claim 1 in which means are provided to mount at least one of said rams for pivotal movement in a plane which would prevent rotation of the table about a vertical axis.
Claim 8
Dependent Claim
22 words
The invention according to claim 1 in which the structure includes pivot means which permit swinging movement about two intersecting axes only.
Claim 9
Dependent Claim
20 words
The invention according to claim 1 in which the supporting universal joint is limited to movement about two intersecting axes.
Claim 10
Dependent Claim
29 words
The invention according to claim 1 in which the universal joint supporting the table is made of two clevices pivoted on perpendiCularly intersecting axes to the single X-shape member.
Claim 11
Dependent Claim
21 words
The invention according to claim 1 in which stabilizing means are provided between the table and the supporting ground or base.
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) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |