Patent US4145291A successfully refreshed from Google Patents.
← Back to Patent Explorer
US4145291A Expired / Lapsed US ⏱️ 0.0 years remaining

Disinfecting means within a water dispenser

Assignee: McKesson Corp
•
Filing: 1977-09-07
•
Granted: 1979-03-20
•
Expires: 1997-09-07
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Apparatus for disinfection of drinking water where the water is stored in a tank or other container from which it is dispensed. The invention is characterized by use of a porous ceramic body having metallic silver dispersed within the same and which is immersed in the water. Silver ion is released from the absorbed liquid of the body at a controlled level of concentration to inhibit the growth of organisms.

Inventors

  • 👤 Ortha M. Console
  • 👤 Alvah M. Griffin

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 08:55
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/16; A61L2/18; C; C02; C02F; C02F1/00; C02F1/001; C02F1/003; C02F1/50; C02F1/505

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 231 words
In water dispensing apparatus, a container for storing water, a vessel below the container having an upper open end adapted to communicate with the lower open end of the container, means for dispensing water from the vessel, upwardly open basket means generally surrounding and extending below the lower open end of the container, the basket means having openings for flow of water from the interior of the same into the vessel, and a ceramic body disposed within the lower portion of the basket means below said lower open end of the container and immersed in the water within the vessel, said body being formed of porous ceramic material having metallic silver dispersed within the same and adapted to absorb water through its exterior surfaces and retain absorbed water in static condition within the body, said basket and said ceramic body being so disposed as to cause water to flow from the container downwardly toward and about the exterior surfaces of the body and through the openings in the basket when water is dispensed from the vessel, said ceramic body being provided with ribs on the lower side of the same which support the body on and spaced from the adjacent surface of the basket, and in which the central portion of the body has a hole extending through the same, said ribs serving to aid flow of water about the body.
Claim 2
Dependent Claim 231 words
In water dispensing apparatus, a container for storing water, a vessel below the container having an upper open end adapted to communicate with the lower open end of the container, means for dispensing water from the vessel, upwardly open basket means generally surrounding and extending below the lower open end of the container, the basket means having openings for flow of water from the interior of the same into the vessel, and a ceramic body disposed within the lower portion of the basket means below said lower open end of the container and immersed in the water within the vessel, said body being formed of porous ceramic material having metallic silver dispersed within the same and adapted to absorb water through its exterior surfaces and retain absorbed water in static condition within the body, said basket and said ceramic body being so disposed as to cause water to flow from the container downwardly toward and about the exterior surfaces of the body and through the openings in the basket when water is dispensed from the vessel, said ceramic body being provided with ribs on the lower side of the same which support the body on and spaced from the adjacent surface of the basket, and in which the central portion of the body has a hole extending through the same, said ribs serving to aid flow of water about the body.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-03-19 1982-09-18 1983-03-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-03-19 1986-09-18 1987-03-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-03-19 1990-09-18 1991-03-20 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag