US 4,513,887 AGranted

Instant hot water dispenser

AssigneeEmerson Electric Co.

InventorsCharles A. Wicke, Wayne C. Riley

Life of this patent

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Abstract

An instant hot water dispenser has an upper plastic tank section connected to a lower brass tank section by a safety clamping arrangement which includes outturned tabs on the upper plastic tank section which interfit in notches in the brass lower tank section and a retainer ring located between the plastic tabs and outturned metal flanges on the brass tank section. An O-ring seal between the plastic upper tank and the brass tank provides a fluid seal. Various of the plumbing connections are integrally molded with the plastic top and expansion chamber cover which is separated from the main water tank by a common wall or partition. An aspirator opening in an integrally formed plastic stem in the expansion chamber cover aspirates water from the expansion chamber as incoming cold water passes the aspirator opening.

Claims1

Dependent claims

An instant hot water heater dispenser comprising:

a. tank means for storing and heating water prior to dispensing thereof, the tank means having an upper tank wall portion;
b. wall means formed integrally with the upper tank wall portion for defining an open top water expansion chamber;
c. a valve chamber wall formed integrally with the wall means;
d. a cover for sealingly closing the expansion chamber, the cover including:
i. a vent and a cold water inlet stem formed integrally with the cover, the inlet stem extending downwardly from the cover and having an aspirator opening to provide communication between the inlet water and the expansion chamber;
and
ii. a valve chamber wall formed integrally with the cover for cooperating with the wall means valve chamber wall to define a valve chamber for confining an aspirating valve member therein;
and
e. retainer means for locking the cover in place to the expansion chamber wall means.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/552,465Filed 16 Nov 1983 · division
Priority: 22 Sep 1982
Granted: 30 Apr 1985
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

F16B 7/0413
For rods or tubes being coaxial: for tubes using the innerside thereof
F24H 1/202
Using electric energy supply: with resistances
F24H 9/14
Details: arrangements for connecting different sections, e.g. in water heaters
F24H 9/146
Arrangements for connecting different sections, e.g. in water heaters: connecting elements of a heat exchanger