Precision snap-on knob mechanism

Details Precision snap-on knob mechanism Precision snap-on knob mechanism

1996-08-19

1999-04-13

Marmor, Charles A.

Machine element or mechanism

Control lever and linkage systems

Elements

403326, 13121, 13DIG30, G05G 112

Patent

active

058932984

ABSTRACT:
A knob securing mechanism secures a knob to a shaft. A uniquely shaped retaining clip attaches in a channel of the knob. The channel intersects a bore in the knob which receives the shaft. The shaft has a groove corresponding to the retaining clip such that the retaining clip and the groove couple when the knob is fully seated in the bore of the shaft. The retaining clip operates as a spring to resist axial motion between the knob and shaft. Ramps are formed on the shaft to facilitates both installing and removing the knob from the shaft by application of axial force. Locking lugs on the shaft engage corresponding locking lugs in the knob to secure the knob rotationally to the shaft. The invention is particularly useful for attaching translucent knobs to shafts of an avionics control panel.

REFERENCES:
patent: 2149375 (1939-03-01), Weibe
patent: 3064494 (1962-11-01), Brewster
patent: 3619594 (1971-11-01), Morez
patent: 4435993 (1984-03-01), Scott
patent: 5309798 (1994-05-01), Markwart
patent: 5481949 (1996-01-01), Yen
Product Catalog, Circa 1990-1991, Anderton -United Products, Inc., 500 Memorial Dr., P.O. Box 6723 Somerset, NJ. 08875-6723. Part No. 1100.

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