US2007236002A1PendingUtilityA1

Drain, particularly for use in a gravity-fed drainage system

40
Individually held — no corporate assignee on recordPriority: Mar 8, 2006Filed: Mar 6, 2007Published: Oct 11, 2007
Est. expiryMar 8, 2026(expired)· nominal 20-yr term from priority
Inventors:Rodney Knight
E03C 1/20
40
PatentIndex Score
0
Cited by
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References
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Claims

Abstract

A connection includes a first female member and a second male member. Engageable threads are provided on the inner surface of the female member and the outer surface of the male member. At least one slot is formed in the threads on the inner surface of the female member or in the threads on the outer surface of the male member or both, the slot or slots extending substantially longitudinally of the female member and/or the male member. Each of the slots has a depth greater than the depth of the threads so that when the male member is engaged in the female member, a passageway or passageways past the threads is provided by the slot or slots.

Claims

exact text as granted — not AI-modified
1 . A connection comprising a first female member and a second male member, engageable threads on the inner surface of the female member and the outer surface of the male member, at least one slot formed in the threads on the inner surface of the female member or in the threads on the outer surface of the male member, or both, the slot or slots extending substantially longitudinally of the female member and/or the male member, the or each slot having a depth greater than the depth of the threads so that when the male member is engaged in the female member, a passageway or passageways past the threads is provided by the slot or slots.  
   
   
       2 . A connection as claimed in  claim 1 , wherein there are a plurality of slots.  
   
   
       3 . A connection as claimed in  claim 2 , wherein there are four slots.  
   
   
       4 . A connection as claimed in  claim 1 , wherein the slots are provided in the female member.  
   
   
       5 . A connection as claimed in  claim 4 , wherein the slots extend downwardly to a depth such that in use the slot extends past the threads in the male member.  
   
   
       6 . A connection as claimed in  claim 1 , wherein the male and the female members are substantially open at each end thereof.  
   
   
       7 . A connection as claimed in  claim 1 , wherein the slots taper inwardly away from the end from which the slot extends.  
   
   
       8 . A connection as claimed in  claim 1 , wherein the side walls of the slot are shaped so that the closed face of the slot is narrower than the open face of the slot.  
   
   
       9 . A drainage member comprising a female member substantially open at each end, threads on the inner surface of the female member, at least one slot formed in the threads on the inner surface of the female member, the slot or slots extending longitudinally of the female member and the or each slot having a depth greater than the depth of the threads so that the slot or slots provide a passageway or passageways past the threads in use.  
   
   
       10 . A drainage member as claimed in  claim 9 , wherein a plurality of slots are provided.  
   
   
       11 . A drainage member as claimed in  claim 10 , wherein four slots are provided.  
   
   
       12 . A drainage member as claimed in  claim 9 , wherein the slots taper inwardly away from the end from which the slot extends.  
   
   
       13 . A drainage member as claimed in  claim 9 , wherein the side walls of the slot are shaped so that the closed face of the slot is narrower than the open face of the slot.  
   
   
       14 . A drainage construction comprising a first female member and second male member, co-operating threads on the inner surface of the female member and the outer surface of the male member, at least one slot being formed in the threads on the inner surface of the female member or in the threads on the outer surface of the male member, or both, the slot or slots extending substantially longitudinally of the female member or the male member, the or each slot having a depth greater than the depth of the threads across which the slot is provided so that when the male member is engaged in the female member a passageway or passageways past the threads is provided by the slot or slots.  
   
   
       15 . A drainage construction as claimed in  claim 14 , wherein a plurality of slots are provided.  
   
   
       16 . A drainage construction as claimed in  claim 15 , wherein there are four slots.  
   
   
       17 . A drainage construction as claimed in  claim 14 , wherein the slots extend downwardly to a depth such that in use the slot extends past the threads in the male member.  
   
   
       18 . A drainage construction as claimed in  claim 14 , wherein the slots taper inwardly away from the end from which the slot extends.  
   
   
       19 . A drainage construction as claimed in  claim 14 , wherein the side walls of the slot are shaped so that the closed face of the slot is narrower than the open face of the slot.  
   
   
       20 . A drainage construction as claimed in  claim 14 , wherein the slots are provided in the female member.  
   
   
       21 . A drainage construction as claimed in  claim 14 , wherein the male and female members are open at each end.  
   
   
       22 . A drainage construction as claimed in  claim 14 , wherein the male and female member have spaced apart flanges at the inlet end of there of in use, a space being defined between the flanges when in use, the passageway or passageways extending from the space to the open lower end in use of the female member.

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