Lockbolt collar

Details Lockbolt collar Lockbolt collar

1977-08-17

1979-01-30

Bonck, Rodney H.

Joints and connections

Interfitted members with external bridging piece

403408, F16B 1905

Patent

active

041365968

ABSTRACT:
The improved lockbolt collar comprises a substantially cylindrical first section and an outwardly flaring skirt connected to the cylindrical section. During the initial setting operation, the cylindrical portion of the collar is swaged into engagement with appropriate locking grooves on a lockbolt pin. In a second setting operation, the skirt is deformed inwardly so as to engage the locking grooves. As a result of the angular relationship of the skirt to the cylindrical section, the second setting step has the effect of elongating the collar to form a tightened joint.

REFERENCES:
patent: 2804798 (1957-09-01), Brilmyer
patent: 2978946 (1961-04-01), Looker
patent: 3057246 (1962-10-01), Brilmyer
patent: 3094017 (1963-06-01), Champoux et al.
patent: 3236143 (1966-02-01), Wing
patent: 3262353 (1966-07-01), Waeltz et al.

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