Agitating – Stirrer within stationary mixing chamber – Rotatable stirrer
Patent
1990-07-27
1992-10-06
Hornsby, Harvey C.
Agitating
Stirrer within stationary mixing chamber
Rotatable stirrer
366270, 366330, 366343, 403316, 403318, 416207, B01F 722, F16B 300
Patent
active
051526069
ABSTRACT:
A mixer impeller, which is adapted to mix and blend liquids and liquid suspensions in industrial and commmercial applications and is subject to forces which tend to work the impeller loose from attachment with its driving shaft, is secured to the shaft by collars (locking rings) which are threaded on the ends of hubs from which the blades of the impeller extend. In order to secure the attachment of the collars to the hub, a locking key is inserted between the collar and the shaft. The inner periphery of the collars are tapered outwardly away from the shaft. The neck of the locking key has portions which are deflected against these tapered inner peripheries when a pin is inserted through the neck of the locking key. A ramp on the collar mates with a ramp on the key to prevent reverse rotation (working loose) of the collar. The impeller is restrained against axial movement by the collar and against rotational movement by being keyed to the shaft and restricted by the ramp on the collar. Removal of the key for impeller replacement and maintenance is readily accomplished using the ramps on the surfaces of the collars and shoulder of the key which bear against each other. Upon removal of the locking pin, the inside of the neck deflects inwardly and the key is urged out of the collar, when the collar is unscrewed from the hub.
REFERENCES:
patent: 810148 (1906-01-01), Hornby
patent: 938546 (1909-11-01), Bernhard
patent: 1264230 (1918-04-01), Vierus
patent: 2182240 (1939-12-01), Sinclair
patent: 3994604 (1976-11-01), Visser
patent: 4285637 (1981-08-01), Thompson
patent: 4290711 (1981-09-01), Paine et al.
patent: 4697303 (1987-10-01), Matsui et al.
patent: 4722608 (1988-02-01), Salzman et al.
"Current Design" of A-6000 Impeller mounting arrangement (sketch), date unknown.
Borraccia Dominic
Everdyke Jonathan C.
Gambrill Jeffrey S.
Webster Walter C.
Cooley C.
General Signal Corporation
Hornsby Harvey C.
Kleinman Milton E.
Lukacher Martin
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