Primed siphonic flush toilet

Abstract

A siphonic flush toilet includes a tank adapted to hold flush water which includes a jet opening and a rim opening. A bowl assembly is also included which has a bowl with a rim conduit connected to the rim opening and a jet feed connected to the jet opening. A rim trap assembly is connected to a flush valve and opening of the flush valve allows flush water to enter the rim conduit and the jet feed. Closure of the flush valve stops flush water from entering the rim conduit and the jet feed while retaining flush water in the rim trap assembly to maintain a prime within the connected jet feed.

What is claimed is: 
     
         1 . A siphonic flush toilet comprising:
 a tank which is adapted to hold flush water, the tank having a jet opening and a rim opening;   a bowl assembly having a bowl with a rim conduit connected to said rim opening and a jet feed connected to said jet opening; and   a rim trap assembly connected to a flush valve, wherein opening of said flush valve allows flush water to enter said rim conduit and said jet feed, and wherein closure of said flush valve stops flush water from entering said rim conduit and said jet feed while retaining flush water in said rim trap assembly to maintain a prime within said connected jet feed.   
     
     
         2 . The flush toilet according to  claim 1 , wherein said rim trap assembly comprises:
 a dual inlet pipe having a rim inlet pipe associated therewith wherein said rim inlet pipe is connected to said rim opening and said dual inlet pipe is connected to said jet opening.   
     
     
         3 . The flush toilet according to  claim 2 , wherein said rim trap assembly further comprises a rim trapway connected to said rim inlet pipe, wherein said rim trapway holds flush water after said valve is closed. 
     
     
         4 . The flush toilet according to  claim 3 , further comprising:
 a float coupled to said flush valve and maintained in said tank, wherein said float permits closure of said flush valve prior to air entering said dual inlet pipe while said tank is filling with flush water.   
     
     
         5 . The flush toilet according to  claim 3 , wherein said rim trap assembly further comprises:
 an overflow tube extending upwardly from and contiguous with said rim trapway; and   a bowl fill tube which deposits water into said overflow tube when flush water in said tank is below a predetermined level.   
     
     
         6 . The flush toilet according to  claim 5 , further comprising:
 a float coupled to said flush valve, such that when said float reaches said predetermined level said water supply stops delivering water to said tank.   
     
     
         7 . The flush toilet according to  claim 1 , wherein closure of said flush valve maintains a partial prime in said rim trap assembly. 
     
     
         8 . A siphonic flush toilet, comprising:
 a tank having a jet opening and a rim opening and maintaining flush water therein;   a rim trap assembly maintained within said tank, said rim trap assembly having a dual inlet pipe, said dual inlet pipe having a valve seat with a jet water inlet at one end and a jet water outlet at an opposite end, said jet water outlet connected to said jet opening, said dual inlet pipe also having a rim trapway with a rim water inlet at one end maintained within said dual inlet pipe and a rim water outlet at an opposite end, said rim water outlet connected to said rim opening;   a flush valve normally closed on said valve seat; and   a bowl assembly having a rim feed connected to said rim opening and a jet feed connected to said jet opening;   wherein opening of said flush valve retains flush water in at least said dual inlet pipe and said jet feed.   
     
     
         9 . The flush toilet according to  claim 8 , wherein said bowl assembly further comprises:
 an upper section; and   a lower section, wherein said sections are delineated by a water line maintained after completion of a flush cycle, and when said flush valve is opened;   said rim water outlet feeds flush water into said rim feed and said upper section, and   said jet water outlet feeds flush water into said jet feed and said lower section.   
     
     
         10 . The flush toilet according to  claim 9 , wherein said bowl assembly further comprises a waste outlet maintained in said lower section and wherein said jet feed has a jet outlet port at an end opposite said jet opening, wherein said jet outlet port is positioned opposite said waste outlet. 
     
     
         11 . The flush toilet according to  claim 10 , further comprising:
 a waste trap contiguous with said waste outlet, said waste trap having a weir which defines said water line at completion of the flush cycle.