US3789705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool for mounting and dismounting a bolted union
Assignee: Individual
•
Filing: 1972-03-24
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Granted: 1974-02-05
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Expires: 1992-03-24
Abstract
Abstract A tool for mounting and dismounting a bolted union comprising a nut and a bolt consists of a spanner which serves to screw the nut onto the bolt and unscrew it therefrom, and of a pin of unround cross section mounted for rotation in the spanner and adapted to engage in a central bore of conforming cross section formed in the free bolt end which cooperates with the nut. The pin mounted for rotation in the spanner and having unround cross section is longitudinally movable within broad limits in the spanner and the pin which has a handle for permitting rotation thereof in relation to the spanner cooperates with a spring mechanism which tends to urge the pin downwards to the position to be occupied by the nut in the spanner. A bolt which is for use in the bolted union and adapted to be operated by the tool has a central hexagon bore formed in its free end.
Inventors
- 👤 B Naslund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:18
CPC Classifications
B; B25; B25B; B25B13/00; B25B13/48; B25B13/488; B25B15/00; B25B15/001; B25B15/004; B25B15/008
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
235 words
A tool for mounting and dismounting a bolted union comprising a nut (3) and a bolt (4), said tool consisting of a hexagon box spanner (2) with a handle and an open lower end for reception of said nut and an end of said bolt to screw the nut (3) onto the bolt (4) and to unscrew it therefrom, and a pin (5) of continuous unround cross-section mounted for rotation in the spanner (2) and adapted to engage in a central bore (6) of conforming crosssection formed in the free end of the bolt (4) which cooperates with the nut (3), said pin (5) Being provided with an operating means (13) for rotating the pin relative to the spanner, wherein the pin (5) of unround cross-section which is mounted for rotation in the spanner (2) is movable so far in its longitudinal direction of the spanner (2) through a horizontal plane defining said open lower end of said spanner so that the pin (5) can follow the bolt (4) during the entire movement thereof in relation to the nut (3) when said nut is screwed onto the bolt and unscrewed therefrom, and the pin (5) cooperates with a spring mechanism (10) which tends to urge the pin downwards to the position occupied by the nut (3) in the spanner (2), said pin (5) in the lowermost position reaching the open end of the spanner (2).
Claim 2
Dependent Claim
235 words
A tool for mounting and dismounting a bolted union comprising a nut (3) and a bolt (4), said tool consisting of a hexagon box spanner (2) with a handle and an open lower end for reception of said nut and an end of said bolt to screw the nut (3) onto the bolt (4) and to unscrew it therefrom, and a pin (5) of continuous unround cross-section mounted for rotation in the spanner (2) and adapted to engage in a central bore (6) of conforming crosssection formed in the free end of the bolt (4) which cooperates with the nut (3), said pin (5) Being provided with an operating means (13) for rotating the pin relative to the spanner, wherein the pin (5) of unround cross-section which is mounted for rotation in the spanner (2) is movable so far in its longitudinal direction of the spanner (2) through a horizontal plane defining said open lower end of said spanner so that the pin (5) can follow the bolt (4) during the entire movement thereof in relation to the nut (3) when said nut is screwed onto the bolt and unscrewed therefrom, and the pin (5) cooperates with a spring mechanism (10) which tends to urge the pin downwards to the position occupied by the nut (3) in the spanner (2), said pin (5) in the lowermost position reaching the open end of the spanner (2).
Claim 3
Dependent Claim
21 words
A tool as claimed in claim 1, wherein the pin of unround cross section is part of a hexagon box spanner.
Claim 4
Dependent Claim
46 words
A bolt for use in a bolted union and adapted to be operated by the tool defined in claim 2, said bolt having a shallow central hexagon bore, in which said pin may be continuously seated during operation of said tool, formed in its free end.
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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |