Joints and connections – Interfitted members – Lugged member – rotary engagement
Patent
1989-12-11
1990-08-21
Kundrat, Andrew V.
Joints and connections
Interfitted members
Lugged member, rotary engagement
4034071, 411 85, F16B 2700
Patent
active
049500996
ABSTRACT:
The clamping type compressive joint made between a continous section (10) and a component (14) is created by means of at least one clamping plate (16) that can be introduced from the front into an undercut groove (12) and rotated by a securing bolt (18). On tightening the securing bolt (18) the continuous section (16) is partly deformed by the clamping plate/plates (16). Each of the section flanges (22), which tend to taper in cross-section in the direction of the longitudinal opening (20) of groove (12), features at least one weakening notch (24) running in the longitudinal direction (c). Clamping cam tips (26) on flanges (22) lying beyond these weakening notches (24) are, after tightening the securing bolt (18), plastically deformed in the region of the clamping plate/plates (16) which is/are essentially in plan view in the form of a parallelpiped and is/are rotated 30.degree.-60.degree. in the groove (12). Four mechanical steps (64) are formed per clamping plate (16) along with clamping cam tips (20) bent over at the same distance from the longitudinal opening to produce configurational locking.
REFERENCES:
patent: 3908330 (1975-09-01), Frach et al.
patent: 4035097 (1977-07-01), Bachand
patent: 4662776 (1987-05-01), Hedstrom et al.
Kundrat Andrew V.
Swiss Aluminum Ltd.
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