Abstract

A hand held shower head with a filter replacing pre-alarm assembly includes a propeller wheel with a magnetically induced signal emitter and a correspondingly placed signal receptor, as well as a digital display connected to the signal receptor. Upon a total accumulated quantity of water flow through a filter positioned within a hand held portion, a pre-alarm signal is generated, and upon reaching a critical point, a buzzer is activated to remind the user to replace the filter to ensure a quality filtered water.

Inventors:	Hsu; Chao Fou (Sanmin Chiu, Kaohsiung, TW)
Appl. No.:	11/029,409
Filed:	January 6, 2005

Foreign Application Priority Data

Mar 16, 2004 [TW]			93107331 A
Mar 16, 2004 [TW]			93107337 A

Current U.S. Class:	210/87 ; 210/449; 210/460
Current International Class:	B01D 35/143 (20060101)
Field of Search:	210/449,460,85,87,89,238 340/610

References Cited [Referenced By] u.S. Patent Documents

4107046	August 1978	Corder
5540107	July 1996	Silverman et al.
5858215	January 1999	Burchard et al.
6016977	January 2000	Farley
6093313	July 2000	Bovaird et al.
6270023	August 2001	Farley
6641717	November 2003	Okano et al.
6927501	August 2005	Baarman et al.
2003/0125842	July 2003	Chang et al.

Primary Examiner: Cecil; Terry K Attorney, Agent or Firm: Bacon & Thomas, PLLC

Claims

What is claimed is:

1. A hand held shower head and filter with a filter replacing alarm assembly, comprising: a shower head having a hollow body and a water inlet having screw threads formed thereon connected with a filter hand hold, said filter handhold including a filter therein; in front, said shower head has firmly mounted a cover member by means of a screw, and said cover member has a plurality of spray holes to allow water to spray out of said shower head; in rear, said shower head has tightly affixed an LCD display circuit used in displaying an instruction sent by a microprocessor of a signal circuit device; a base seat affixed in the inner of said shower head, wherein a bottom surface of said base seat forms an indented water chamber, said base seat has a water inlet channel and an outlet channel which are formed at two sides of said water chamber and connected with each other; a rotation axle is downwardly protruded into said water chamber from a central area of a bottom surface of said base seat; a cover seat is tightly affixed on a bottom side of said base seat with the bottom surface of said base seat abutting to a top surface of said cover seat, said cover seat has a water inlet which has two ends corresponding to said inlet channel and said water inlet respectively and is formed on a side surface of said cover seat, said cover seat has a water outlet which is corresponding to said outlet channel and is formed on a top surface of said cover seat; a supporting axle is upwardly protruded from a central area of the top surface of said cover seat, and a central dowel having an internally threaded hole defined therein is downwardly protruded from a bottom side of said cover seat; a propeller wheel is situated and supported in said water chamber of said base seat, wherein said propeller wheel is a circular body having a plurality of curved propeller blades extended radially therefrom, and a magnetic element is embedded on a top side of said circular body, wherein two central axial recesses are coaxial at a center of a top side and a bottom side of said propeller wheel respectively; and; a signal circuit device comprising a microprocessor, a DC power supply electrically connected to said microprocessor, a transducer electrically connected to said microprocessor, a reset switch electrically connected to said microprocessor, a reset switch electrically connected to said microprocessor, an LCD display circuit electrically connected to said microprocessor, a buzzer electrically connected to said microprocessor and a signal receiver which is enclosed at a top surface of said base seat and corresponding to the magnetic element of said propeller wheel.

2. A hand held shower head with filter replacing pre-alarm assembly, comprising: a shower head having a hollow body which is secured at an elongate thread portion connected with a filter hand hold, said filter handhold including a filter therein; a water chamber formed in a bottom surface of said elongate thread portion, said shower head has a water inlet and a water outlet formed at two sides of said water chamber respectively and connected with each other, in a front of said shower head hollow body is firmly mounted a cover member which has a plurality of spray holes to allow the water to spray out of said shower head; in a rear of said shower head hollow body is tightly affixed an LCD display circuit device including a microprocessor, said LCD display displays an instruction sent by the microprocessor of a signal circuit device; and a propeller wheel situated and supported in said water chamber of said elongate thread portion, wherein said propeller wheel is a circular body having a plurality of curved propeller blades extended radially therefrom, and a magnetic element embedded therein on a top side of said circular body, wherein two central axial recesses are coaxial at a center of a top side and a bottom side of said propeller wheel respectively, and a signal receiver which is enclosed within said elongate thread portion above a top surface of said water chamber and corresponding to the magnetic element of said propeller wheel.