Dispensing – With discharge assistant – Container with follower
Patent
1986-04-15
1988-06-28
Rolla, Joseph J.
Dispensing
With discharge assistant
Container with follower
222151, 222391, 22240212, 222509, 222559, B67D 542
Patent
active
047533730
ABSTRACT:
The present invention is a positive displacement dispenser which is particularly useful in dispensing viscous materials such as toothpaste. This dispenser has a longitudinally-extending housing which defines a chamber for material to be dispensed, a discharge orifice in the housing through which the material is dispensed from the chamber, a threaded rod having an axis extending through the chamber, a piston with a threaded opening mounted on the rod so that rotation of the rod moves the piston, an actuating lever pivotally mounted to the housing, and a rotatable wheel operatively coupling the threaded rod and the actuating lever so that depression of the actuating lever causes the wheel to turn the threaded rod and advance the piston. The rotatable wheel is coaxially-mounted to the threaded rod and has a plurality of pins mounted on a circular path surrounding the axis of the wheel. A drive bar is attached to the actuating lever such that depression of the lever causes the drive bar to engage one of the pins and rotate the wheel a fixed amount. A return spring which is also attached to the actuating lever returns the actuating lever to its original position and simultaneously urges the drive bar against an adjacent pin.
REFERENCES:
patent: 1468534 (1923-09-01), Lang
patent: 1716487 (1929-06-01), Davis
patent: 1944067 (1934-01-01), Collins
patent: 2080343 (1937-05-01), Smith
patent: 2789737 (1957-04-01), Palo
patent: 2816309 (1957-12-01), Worth et al.
patent: 3027052 (1962-03-01), Marraffino
patent: 3211347 (1965-10-01), Phillips, Jr.
patent: 3563414 (1971-02-01), Coulombe et al.
patent: 3687339 (1972-08-01), Dessureault
patent: 3728035 (1973-04-01), Reitknecht
patent: 3753516 (1973-08-01), Crider
patent: 3756730 (1973-09-01), Spatz
patent: 3774816 (1973-11-01), Bratton
patent: 3853243 (1974-12-01), Forman
patent: 3885707 (1975-05-01), Wittwer
patent: 3993226 (1976-11-01), Pavenick
patent: 4019655 (1977-04-01), Moeller
patent: 4139127 (1979-02-01), Gentile
patent: 4144988 (1979-03-01), Bergman
patent: 4145147 (1979-03-01), Schuck
patent: 4189065 (1980-02-01), Herold
patent: 4303110 (1981-12-01), Chen
patent: 4369901 (1983-01-01), Hidding
patent: 4418840 (1983-12-01), Gardner, Sr.
patent: 4424916 (1984-01-01), Pearson
patent: 4437584 (1984-03-01), Connors et al.
patent: 4437591 (1984-03-01), von Schuckmann
patent: 4457641 (1984-07-01), Smith
patent: 4479592 (1984-10-01), Rusing et al.
patent: 4485943 (1984-12-01), Czech
patent: 4508239 (1985-04-01), Rozzen
patent: 4508240 (1985-04-01), Arango
patent: 4511068 (1985-04-01), Bossina
patent: 4515293 (1985-05-01), Hill et al.
patent: 4538747 (1985-09-01), von Schuckmann
patent: 4564130 (1986-01-01), Evlenburg
patent: 4598843 (1986-07-01), Foster et al.
patent: 4629097 (1986-12-01), Moore
Risdon Corporation
Rolla Joseph J.
Shaver Kevin P.
LandOfFree
Positive displacement 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 Positive displacement dispenser, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Positive displacement dispenser will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1910945