Agitating – In vacuum chamber
Patent
1989-02-07
1989-12-26
Hornsby, Harvey C.
Agitating
In vacuum chamber
222388, 222568, 366177, 366189, 366194, 366249, 366289, 425203, B01F 1306, B01F 1502, B01F 722, B29B 716
Patent
active
048894320
ABSTRACT:
A dental mixer apparatus including an upright mixing chamber having an upper open end for receiving dental impression materials and a plunger member suspended coaxially upon an elongated rotary driven mixer shaft for vertical reciprocable movement between a lower operative position in which the plunger is received within the mixing chamber and an upper inoperative position above the mixing chamber. A rotary mixer head is driven by the mixer shaft below the mixing chamber for mixing the materials within the mixing chamber. A suction conduit is provided to suck air from the mixing chamber in order to minimize voids and bubbles within the mixed ingredients. The mixer shaft is supported by a support bracket which is pivotally mounted to permit the mixer shaft and plunger to swing away from their normal vertical position above the mixing chamber to provide more working space above the mixing chamber. Optionally, the mixing chamber may be supported in a receptacle hinged to a base member to permit swinging movement of the mixing chamber away from its position beneath the mixer head. The plunger may also be depressed to discharge the mixed ingredients from an opening in the bottom of the mixing chamber.
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patent: 3468520 (1969-09-01), Duryea et al.
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patent: 4277184 (1981-07-01), Solomon
patent: 4577973 (1986-03-01), Occelli
patent: 4668561 (1987-05-01), Ney
patent: 4721390 (1988-01-01), Lidgren
patent: 4787751 (1988-11-01), Bakels
Haugland Scott J.
Hornsby Harvey C.
Lackey Harrington A.
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