Dispensing – Processes of dispensing
Patent
1991-01-07
1991-08-06
Bollinger, David H.
Dispensing
Processes of dispensing
2224021, 222422, B65D 4718
Patent
active
050370014
ABSTRACT:
Delivery of water solutions in metered drops through a metered valve aerosol package by specific selection of propellant and valve actuator allows multidose dispensing of preservative-free product formulations to a selected site of application. A known type of metering valve is used with a water-soluble propellant, which permits dispensing of a single drop of product in the form of a clear drop or an unstable, readily breakable foam. The propellant rapidly evaporates from the drop, while any foam collapses, leaving a clear liquid drop. A preferred propellant is dimethyl ether.
REFERENCES:
patent: 2539929 (1951-01-01), Roberts
patent: 2562111 (1951-07-01), Michel
patent: 2631814 (1953-03-01), Abplanalp
patent: 2715481 (1955-08-01), McGhie et al.
patent: 2723200 (1955-11-01), Pyenson
patent: 2742195 (1956-04-01), Elder, Jr.
patent: 2748985 (1956-06-01), Seymour
patent: 2856235 (1958-10-01), Ward
patent: 2932434 (1960-04-01), Abplanalp
patent: 3170462 (1965-02-01), Hall
patent: 3677447 (1972-07-01), Rentz
patent: 3934585 (1976-01-01), Maurice
patent: 4019657 (1977-04-01), Spitzer
patent: 4439343 (1984-03-01), Albanese
patent: 4585577 (1986-04-01), Bartlett et al.
patent: 4655959 (1987-04-01), Stopper
LandOfFree
Means and method for metered single-drop dispensing of water sol does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Means and method for metered single-drop dispensing of water sol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Means and method for metered single-drop dispensing of water sol will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1981061