Coating implements with material supply – Including means to apply material-moving force – Piston-provided reservoir
Patent
1990-10-01
1995-04-18
DeMille, Danton D.
Coating implements with material supply
Including means to apply material-moving force
Piston-provided reservoir
401188R, 401190, 401271, 401280, B05C 17015, A46B 1102, A45D 4026
Patent
active
054072875
ABSTRACT:
A fountain toothbrush has in its handle a toothpaste reservoir constantly pressurized by a charge of actuator gas acting through a cup-like piston disposed at the upstream end of the reservoir. The gas pressure pushes the piston and toothpaste downstream while resiliently urging the piston sidewall against the reservoir boundary wall to forwardly extrude toothpaste adjacent the boundary wall. A valve for selectively passing toothpaste from the reservoir to the brush head includes an apertured gate and a structurally separate actuator for translating the gate in a valve chamber in opposition to a bias spring. Separating the gate from the actuator permits the gate to be positively sealed against the chamber outlet by the toothpaste in the closed valve position. A lengthwise segment of the gate has a reduced thickness dimension so as not to fill the upstream side of the valve chamber, thereby avoiding the creation of a partial vacuum that would otherwise hold the gate in its open position.
REFERENCES:
patent: 995626 (1911-06-01), Moran
patent: 1085839 (1914-02-01), Acton
patent: 1134865 (1915-04-01), Jones
patent: 1258677 (1918-03-01), Haskell
patent: 1653987 (1927-12-01), Cliffe
patent: 1937006 (1933-11-01), Aronson
patent: 2226663 (1940-12-01), Hill et al.
patent: 2416684 (1947-03-01), Fischer
patent: 2441520 (1948-05-01), Ulvick
patent: 2527317 (1950-10-01), Magann et al.
patent: 2625302 (1953-01-01), Mahoney
patent: 2652949 (1953-09-01), Martin
patent: 2790190 (1957-04-01), Mastrandrea
patent: 2987743 (1961-06-01), Capps
patent: 3256894 (1966-06-01), Sherman
patent: 3367545 (1968-02-01), Cook
patent: 3375056 (1968-03-01), Rosan
patent: 3854826 (1974-12-01), Adams
patent: 3937235 (1976-02-01), Broughton
patent: 3995648 (1976-12-01), Kuryla
patent: 3997273 (1976-12-01), Germann
patent: 4269207 (1981-05-01), Konrad et al.
patent: 4530369 (1985-07-01), Adams
patent: 4693622 (1987-09-01), Booth
patent: 4695177 (1987-09-01), Kuo
Braun John C.
Hill Thomas C.
Jones William
Braun John C.
DeMille Danton D.
LandOfFree
Toothbrush with self-contained toothpaste 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 Toothbrush with self-contained toothpaste dispenser, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Toothbrush with self-contained toothpaste dispenser will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-63476