Fixing structure for fixing a pin to a link in a caterpillar

Details Fixing structure for fixing a pin to a link in a caterpillar Fixing structure for fixing a pin to a link in a caterpillar

2005-08-09

2005-08-09

Brittain, James R. (Department: 3677)

Joints and connections

Including ancillary means blocking disconnection of joint

C305S204000

Reexamination Certificate

active

06926460

ABSTRACT:
An link of a caterpillar which is allowed to maintain stabilized durability for a long period. The fixing structure has a link, and a pin inserted into a pin inserting bore formed in the link. A peripherally extending concave groove formed on the end portion of the pin and an opening periphery conjugate to forms an annular space. In order to limit relative escaping motion of the pin in the off-opening side (toward receding direction), a escape limiting ring is fitted into the annular space. The hardness of the bottom surface of the peripherally extending concave groove is lowered than the surface hardness of a link engaging portion of the pin.

REFERENCES:
patent: RE22488 (1944-05-01), Focke
patent: 4150856 (1979-04-01), Hakkenberg et al.
patent: 5076149 (1991-12-01), Everts
patent: 6422667 (2002-07-01), Miyaura
patent: 46-18569 (1971-06-01), None
patent: 2001-10552 (2001-01-01), None

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