A plastic female part 110 for use in a lifting or pulling apparatus has a hole 112 extending into the female part which has a narrower first portion 120 and a wider second portion130. The hole, which may be blind, includes an outer opening 114 and a tapered abutment surface 116 extending radially outwards, maybe at an angle of 80 degrees, from the first portion to the second portion. The second portion may taper out 132 from the abutment surface and then taper in 134 towards the end of the hole. The part may have rim 144 with threading 146 for a lid and buttressing (118 fig.5) between the outer wall of the abutment surface and the outer wall of the first portion of the hole.
Apparatus for use in pulling or lifting an object
2024-06-26
Patent
Elektronische Ressource
Englisch
LIFTING-PULLING APPARATUS HAVING LIFTING-PULLING FORCE
Europäisches Patentamt | 2020
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