Dispensing – With discharge assistant – With biasing means for discharge assistant and/or its casing
Patent
1983-03-04
1985-03-12
Tollberg, Stanley H.
Dispensing
With discharge assistant
With biasing means for discharge assistant and/or its casing
239333, B65D 4734
Patent
active
045039984
ABSTRACT:
A trigger sprayer pump for dispensing a fluid from a container includes a body containing a pumping chamber having an inlet and an outlet conduit. A piston is reciprocably mounted in the pumping chamber, the piston having a convexly contoured outer end surface. A trigger pivotally mounted and locked to the body has a plurality of triangular supports co-joined to form a tapered socket receiving the outer end surface of the piston. A channel-defining insert is received in the outlet conduit, the insert having a centrally situated, forwardly facing, fixed surface. The fixed surface can be concave or a convex protuberance. An elastic, cup-shaped member secured at its periphery to the body has a central aperture situated in contact with and closed by the fixed surface. The central aperture of the cup-shaped member is a cavity in the center of the interior surface of the member extending only partway through the member, at least two depressions on the exterior surface of the member spaced from each other yet each intersecting the cavity, and a swirl chamber situated between and connected to the depressions. The top of the pump is mechanically secured to the outside of the outlet conduit by tabs straddling and locking to the conduit.
REFERENCES:
patent: 3602407 (1971-08-01), Valbert
patent: 3650473 (1972-03-01), Malone
patent: 4161288 (1979-07-01), McKinney
patent: 4191313 (1980-03-01), Blake et al.
patent: 4227650 (1980-10-01), McKinney
patent: 4257539 (1981-03-01), Cary et al.
Tollberg Stanley H.
Universal Dispensing Systems, Inc.
LandOfFree
Trigger sprayer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Trigger sprayer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trigger sprayer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-703650