Tooth assembly and retaining mechanism

Details Tooth assembly and retaining mechanism Tooth assembly and retaining mechanism

1995-07-25

1996-10-08

Melius, Terry Lee

Excavating

Digging edge

Tooth or adaptor

37452, 37457, E02F 928

Patent

active

055619258

ABSTRACT:
A tooth assembly includes a tip and an adapter, with the tip being replaceably secured to the adapter by a retaining mechanism. It is advantageous to have a tooth assembly that, due to mating load transfer surfaces between the tip and adapter, allows the effective transfer of forces from the tip directly into the adapter without creating undesired resultant forces on the retaining mechanism. In the subject arrangement, the retaining mechanism utilizes a double flex pin that eliminates the need for supplemental devices or components to retain such retaining pin. In particular, the pin is provided with a pair of protrusions defining a detent valley therebetween on one surface thereof that receives a detent protrusion provided on the nose of the adapter. The retaining pin is caused to flex in one direction by insertion through a curved passage through the tip and adapter to snugly secure the tip to the adapter and is caused to flex in a direction perpendicular to the first direction to locate the detent protrusion of the adapter in the detent valley of the pin. The force necessary to flex the pin sufficiently to allow the detent to escape from the detent valley prevents the pin from being lost during use.

REFERENCES:
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patent: 5233770 (1993-08-01), Robinson
patent: 5272824 (1993-12-01), Cornelius
patent: 5423138 (1995-06-01), Livesay et al.
patent: 5469648 (1995-11-01), Jones et al.

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