Coupler locking device

Locks – Special application – For control and machine elements

Patent

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Details

280507, F16B 4100

Patent

active

052840387

ABSTRACT:
A locking device includes a threaded stud with a flat face cut through the threaded surface parallel to the axial direction of the stud, and a knob which locks over a forward section of the stud and includes a casing having an inner surface which defines a hole extending axially through the casing. The inner surface of the casing has a flat surface extending axially which receives the corresponding flat face on the threaded stud to prevent rotation of the casing with respect to the stud. The knob also includes a tumbler housing which is mounted in an axially-fixed position within the casing to rotate freely when a key is inserted into the tumbler housing, and to remain locked in a fixed position when the key is withdrawn. Fitted into the rearward end of the tumbler housing is a sleeve having a threaded axial hole which engages the threaded stud when the tumbler housing is turned by a key to thereby pull the forward section of the stud into the casing hole.

REFERENCES:
patent: 1430837 (1922-10-01), Oakes
patent: 1438574 (1922-12-01), Briggs
patent: 1444214 (1923-02-01), Schultz
patent: 1491691 (1924-04-01), Godshalk
patent: 1554958 (1925-09-01), Falk
patent: 1782584 (1930-11-01), Ryan
patent: 1828658 (1931-10-01), Henke, Jr.
patent: 1921225 (1933-08-01), Hawkins
patent: 1971797 (1934-08-01), Shinn
patent: 2999377 (1961-12-01), Raye
patent: 3139291 (1964-06-01), Geresy
patent: 3605457 (1971-09-01), Foster
patent: 4428211 (1984-01-01), Hermann
patent: 4619122 (1986-10-01), Simpson
patent: 4637234 (1987-01-01), Mielonen
patent: 4711106 (1987-12-01), Johnson
Distributor Net Price Schedule Dead-Bolt Spare Tire Lock, published by C. T. Johnson Enterprises, Inc., Jul. 1, 1988.

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