Ball and socket joint for snowblower chute control rod linkages

Details Ball and socket joint for snowblower chute control rod linkages Ball and socket joint for snowblower chute control rod linkages

1993-01-15

1994-10-04

Reese, Randolph A.

Excavating

Snow or ice removing or grooming by portable device

Motorized rotary excavating tool

403134, E01H 509

Patent

active

053514238

ABSTRACT:
The snow discharge spout pipe from a snowblower is conventionally extended by spout extensions commanded by control rod linkages. The present ball and socket joints are used to interconnect each pair of successive link arms to one another, and some link arms to the snowblower casing. These joints are of the universal joint type, including a ball rotatable into a spherical socket. Each end of a link arm has such a joint. Each socket is composed of two ring members in mutual contact at their flat inner radial faces. These faces are precisely machined to obtain the desired clearance between the spherical surfaces of the ball and ring members. Each ball includes an axial bore, rotatably receiving a shoulder bolt. The bolt and ball have lubricating passages opening at the relatively movable bearing surfaces of the bolt, ball and ring members.

REFERENCES:
patent: 3075813 (1963-01-01), Vohl
patent: 3483960 (1969-12-01), Wightman et al.
patent: 3552045 (1971-01-01), Fieber
patent: 3808715 (1974-05-01), Haban
patent: 4312143 (1982-01-01), Kado
patent: 4549365 (1985-10-01), Johnson
patent: 4862607 (1989-09-01), Wacker
patent: 5100254 (1992-03-01), Wasada
patent: 5114261 (1992-05-01), Sugimoto et al.
patent: 5209596 (1993-05-01), Matczak et al.

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