Instant hot water dispensing system
Patent 4077545 Issued on March 7, 1978. Estimated Expiration Date: 
March 7, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 7, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorAssigneeApplicationNo. 05/725591 filed on 09/22/1976US Classes:222/144.5, With selecting means137/339, With diversion of part of fluid to heat or cool the device or its contents137/341, With electric heating element137/625.41, Rotary valve137/801, FAUCETS AND SPOUTS222/146.5, By electrical energy392/471Combined liquid flow heater and pump unitExaminersPrimary: Reeves, Robert B.Assistant: Silverberg, Fred A. Attorney, Agent or FirmInternational ClassF24H 1/10 (20060101)AbstractAn instant hot water dispenser system utilizes the same spout to dispense instant hot water as is used to dispense water from the plumbing system of the building and mixtures thereof. The instant hot water dispenser utilizes a small electrically heated hot water tank located adjacent to the faucet and includes a faucet spout having an inside passage for dispensing instant hot water and an outer passage for dispensing plumbing system water. The outer water passage provides an insulating water jacket surrounding the instant hot water passage to prevent high temperatures of the spout surface and eliminate the possibility of burns to the user. Various valving arrangements are disclosed to dispense through the spout plumbing system water only, instant hot water only, a mixture of instant hot water and plumbing system water, etc. | |
