A - Human Necessities – 47 – B
Patent
A - Human Necessities
47
B
A47B 95/02 (2006.01) F16B 7/14 (2006.01)
Patent
CA 2153357
The invention relates to locking means for telescopic tubes, and has for its objective the avoidance of separate compression fittings or spring clip means, and the avoidance of the known problem of twist lock means where the members can be over rotated to release the connection and cause damage to the members. The objectives are met by a construction comprising an outer tube of generally oval cross-section, an inner member able to be slidably and rotatably located within the outer tube, and a locking member located on the inner member, said locking member having opposed, curved lobes on radii struck from spaced centres to provide a distance between dead centre positions of each lobe less than the major axis of the generally oval outer tube and greater than the minor axis of the generally oval outer tube, and to provide a minor axial width of the lobe less than the minor axial dimension of the outer tube, the peripheral extent of each lobe being such that the outer extremities of the lobes lie in close, but spaced, relationship to the inner surface of the outer tube when the axial line between the respective dead centres of each lobe is in alignment with the major axis of the outer tube.
James Neill Holdings Limited
Robic
LandOfFree
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