Joints and connections – Interfitted members – Including set screw
Patent
1997-01-06
1998-10-06
Stodola, Daniel P.
Joints and connections
Interfitted members
Including set screw
403231, 403316, 403362, 4034051, B25G 302
Patent
active
058167340
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a connection arrangement designed to provide detachable connection of pairs of elements by means of a displaceable piston capable of actuation by spring force, which is capable of being accommodated internally within a cavity in a connection sleeve with the retaining end of the piston and capable of being locked in the connection position by means of a locking screw that is capable of interacting with an inclined tensioning surface in the piston and with a gripping device projecting from said cavity on the connecting end of the piston facing outwards from the cavity in the aforementioned first element.
SUMMARY OF THE INVENTION
The principal object of the present invention is to provide a connection which is capable of being assembled and then used without the risk of its constituent components working loose from one another in the connection.
Said object is achieved by means of an arrangement in accordance with the present invention, which is characterized essentially in that a lock is present between the aforementioned sleeve and the piston to limit the projection of the piston from the internal cavity of the aforementioned sleeve, which lock is arranged at a distance from the accommodating part of the locking screw in the sleeve of the connection selected in such a way that it essentially coincides with the distance between the tensioning surface and a gripping and interacting stop for the lock in the piston.
DETAILED DESCRIPTION OF THE DRAWINGS
The invention is described below with reference to the accompanying drawings, in which:
FIG. 1 shows a plan view of a connection in the position ready for connection viewed from below;
FIGS. 1A and 1B show end views of the connection;
FIG. 2 shows a plan view of a connection in the position ready for connection viewed from the side;
FIG. 3 shows a sectional view along the line III--III in FIG. 2;
FIG. 4 shows a sectional view along the line IV--IV in FIG. 2;
FIG. 5 shows a plan view of a connection in the position ready for connection viewed from above;
FIG. 6 shows a sectional view of the connection along the line IV--IV in FIG. 5;
FIG. 7 shows a sectional view of the connection in the connected position;
FIGS. 8, 8A, 8B, and 8C show a first illustrative embodiment of a locking piston;
FIG. 9 shows a second illustrative embodiment of a locking piston; and
FIG. 10 shows an accommodating body viewed in perspective.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
An arrangement 1 for a connection 2 designed to provide detachable connection of pairs of elements 3, 4, such as building elements, by means of a piston 6 capable of being displaced by a spring 5 through actuation by spring force, which piston is capable of being accommodated internally within an elongated cavity 7 in a connection sleeve 8 with the retaining end of the piston 9 and capable of being locked in the connection position K by means of a locking screw 10 that is capable of interacting with an inclined tensioning surface 11 in the piston 6, and with a gripping device 12 projecting from said cavity 7 on the connecting end 14 of the piston 6 facing outwards from the cavity 13 in the aforementioned first element, comprises a lock 15 for the aforementioned piston 6. More specifically, the aforementioned lock 15 is present between the aforementioned sleeve 8 and the piston 6 in order, with the connection in its installed position, to limit the projection of the piston in the direction 16 from the internal cavity 7 of the aforementioned sleeve. The aforementioned lock 15 is arranged at a distance A from the accommodating part 17 of the locking screw in the sleeve 8 of the connection selected in such a way that the distance A essentially coincides with the distance B between the tensioning surface 11 of the piston 6 and a gripping and interacting stop 18 for the lock 15 in the piston 6.
The lock is preferably in the form of a pivoting tongue 15 in the sleeve 8 of the connection.
Present at the freely pivoting end 19 of the locking to
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patent: 4641983 (1987-02-01), Strassle
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patent: 4787769 (1988-11-01), Michael
patent: 4826345 (1989-05-01), Salice
patent: 4893959 (1990-01-01), Offenbroich
patent: 4983065 (1991-01-01), Spath
patent: 5209598 (1993-05-01), Zullig
patent: 5281045 (1994-01-01), Ichikawa
Foga System International AB
Lev Bruce A.
Stodola Daniel P.
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