Animal husbandry – Animal controlling or handling – Stanchion
Patent
1996-06-21
1998-02-10
Hirsch, Paul T.
Animal husbandry
Animal controlling or handling
Stanchion
119740, 119750, A01K 106
Patent
active
057157758
ABSTRACT:
A pivot arrangement for holding structural members, such as cattle stanchions, in pivotal engagement, with improved durability and wear resistance at the pivot point. In the stanchion (25) containing the pivot holes (36) and (37), an ultrahigh molecular weight, high density resin plastic insert (38) is positioned on the interior of the stanchion in the area surrounding the pivot holes (36) and (37). The resin insert has wear-resistant properties greater than the metal material from which the stanchion (25) is made. A pre-drilled bearing channel (42) in the plastic insert (38) is aligned to register concentrically with the pivot holes (36) and (36), and the plastic insert is secured in this position by dimples in the walls of the stanchion (25). The bore of the bearing channel (42) is slightly smaller than the diameter of holes (36) and (37), and therefore, when the pivot pin from a cooperating stanchion (26) is placed in the aligned pivot holes and bearing channel, the wearing caused by rotation of the pivot pin is borne by the bearing channel, out of contact with the walls of stanchion (25).
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Hercules Incorporated specification sheet for 1900 UHMW Polymer, dated 1979 .
Barber Frank T.
Cates Charles E.
Hirsch Paul T.
Nielsen Industries, Inc.
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