F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
F16B 39/32 (2006.01) F16B 39/24 (2006.01)
Patent
CA 2283606
A fastener for anchoring in a support structure, such as a ceiling made of gypsum, in combination with a locking ring for substantially preventing the fastener from accidentally loosening from the ceiling comprises a first member adapted to be inserted in the support structure for firmly anchoring the fastener thereto and also comprising a second member adapted to be located externally of the ceiling. The locking ring includes anchoring teeth for stationarily mounting the locking ring to the ceiling. The second member and the locking ring comprise co-operating locking ratchet elements for locking the fastener to the locking ring and thus preventing the fastener from loosening from the ceiling. The second member comprises a pair of diametrically opposed first ratchet teeth for co-operating with a series of second ratchet teeth provided on the locking ring such that the second ratchet teeth ride along the first ratchet teeth upon rotation of the fastener and with the locking ring being anchored to the ceiling. The locking ring defines at a central opening thereof at least one notch with the fastener defining at least one tab with the notch being slidable through the tab for mounting the locking ring to the fastener and then allowing it to rotate between the tab and the second member, whereby the locking ring is prevented from being removed from the fastener unless the tab and notch are aligned.
Bouchard Andre
Mcduff Pierre R.
Mcsherry Thomas W.
Nguyen-Huu Lang
Villagrasa Michel
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