Tooth assembly with leaf spring retainer

Details Tooth assembly with leaf spring retainer Tooth assembly with leaf spring retainer

1993-05-10

1993-12-28

Taylor, Dennis L.

Excavating

Digging edge

Tooth or adaptor

37456, 37455, E02F 928

Patent

active

052728242

ABSTRACT:
Tooth assemblies having a tooth attached to an adapter by a retaining mechanism is normally utilized in order to readily replace the tooth which is a high wear element. It is advantageous to have a retaining mechanism that is both simple, easy to install and remove and provides a high holding force to the pin to offset any tendency of the pin coming out during use. In the subject arrangement, a substantially flat leaf spring retainer is provided and is located in a retainer opening transverse to a pin. Upon installing the pin, the leaf spring is forced to flex. The force needed to flex the leaf spring is likewise the effective force holding the pin in its assembled position. A central groove is defined in the pin and is of a sufficient size to receive the portion of the leaf spring in contact therewith once the pin is in its installed position. Once the leaf spring drops into the central groove, the degree of deflection of the leaf spring is reduced resulting in the life of the leaf spring being increased. By having the retainer opening transverse to the pin opening, the strength of the nose portion is maintained. Likewise, the leaf spring can be made from a substantially flat member.

REFERENCES:
patent: 3494245 (1970-02-01), Helton
patent: 3650053 (1972-03-01), Baer
patent: 3997989 (1976-12-01), Stepe
patent: 4516340 (1985-05-01), Launder
patent: 4727663 (1988-03-01), Hahn
patent: 4965945 (1990-10-01), Emrich
patent: 5009017 (1991-04-01), Diekevers et al.
patent: 5068986 (1991-12-01), Jones

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