Dispensing – Movably mounted supply container – Moving relatively to trap – impeller or valve to cause discharge
Patent
1990-10-09
1992-01-21
Huppert, Michael S.
Dispensing
Movably mounted supply container
Moving relatively to trap, impeller or valve to cause discharge
222634, 222401, 406132, B67D 564
Patent
active
050821482
ABSTRACT:
A powder dispenser basically characterized by a powder reservoir (14) positioned above a mixing chamber (18). The mixing chamber (18) is separated from the powder reservoir by a first wall (16). The first wall (16) includes a powder outlet (22) bordered by a downwardly directed upper valve seat (24). The mixing chamber (18) includes a second wall (20) spaced axially below the first wall (16). The second wall (20) includes an air inlet (32) bordered by an upwardly directed lower valve seat (28). An axially movable valve plug (32) is located within the mixing chamber (18). The valve plug (32) has upper and lower surfaces (34 and 36), with the lower surface normally resting on the lower valve seat (28), and its upper surface (34) normally spaced axially from the upper valve seat (24). The dispenser also includes a pump for delivering air to and through the air inlet (26), and against the lower surface of the valve plug (32), to move the valve plug upwardly and place its upper surface (34) into seating engagement with the upper valve seat. Air flow through the air inlet (26) and into and through the mixing chamber (18). As it flows through the mixing chamber (18) the air picks up the powder and carries it out through a discharge passageway (40) for dispensing the powder. Airflow from the pump vibrates the valve plug (32) and an upwardly extending member (148) which is secured to the valve plug (32). The movement disturbs the powder in the reservoir, encouraging powder to flow downwardly through opening (22) into the mixing chamber (18). A cam (152) and cam follower (150) system is provided to urge the valve plug (32) upwardly into a seated position against a circular seat (24), in response to a rotation of an upper plunger part (46) relative to a lower plunger part (78).
REFERENCES:
patent: 1272283 (1918-07-01), Madden
patent: 1540198 (1925-06-01), Treadwell
patent: 1777278 (1930-09-01), Huntington
patent: 1930872 (1933-10-01), Blackmum
patent: 2068871 (1937-01-01), Rose
patent: 2156268 (1939-05-01), Rose
patent: 2215937 (1940-09-01), Rutkowski
patent: 2525742 (1950-10-01), Weiss et al.
patent: 2974879 (1961-03-01), Raehs et al.
patent: 3036781 (1962-05-01), Raehs et al.
patent: 3092331 (1963-06-01), Kiashek
patent: 3733010 (1973-05-01), Riccio
patent: 4084731 (1978-04-01), Ayres
patent: 4472091 (1984-09-01), Callahan
Barnard Delbert J.
Huppert Michael S.
Huson Gregory L.
LandOfFree
Powder dispenser does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Powder dispenser, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Powder dispenser will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-111287