Joints and connections – Articulated members – Lockable at fixed position
Patent
1997-02-27
1999-04-27
Knight, Anthony
Joints and connections
Articulated members
Lockable at fixed position
4031091, 4033744, F16B 710
Patent
active
058972684
ABSTRACT:
A device for assembling and locking two tubes has a radially symmetrical central member having a cylindrical screwthread on a front part and a cylindrical peg at the rear. The latter is inserted in a first tube. The front part is covered by two half-shells with a cylindrical outside wall, bearing on each other along a rectilinear ramp surface. One of the half-shells is unable to move in translation. The other is entrained in translation by the screwthread when the tube is rotated, which tends to move the two half-shells away from the central member, although they remain parallel to each other, until they come into contact with the inside wall of the second tube. The contact surface is cylindrical. The invention is useful, for example, in manufacture of telescopic rods.
REFERENCES:
patent: 2261505 (1941-11-01), Schlesinger
patent: 2291747 (1942-10-01), Neuwirth
patent: 2494878 (1950-01-01), Jensen
patent: 3198562 (1965-08-01), Smith
patent: 4134703 (1979-01-01), Hinners
patent: 4238164 (1980-12-01), Mazzolla
patent: 5085063 (1992-02-01), Van Dyke et al.
patent: 5232304 (1993-08-01), Huang
Deville Sa Secateurs Pradines
Knight Anthony
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