US2006039813A1PendingUtilityA1

Domed cover for pump head

41
Individually held — no corporate assignee on recordPriority: Aug 19, 2004Filed: Aug 18, 2005Published: Feb 23, 2006
Est. expiryAug 19, 2024(expired)· nominal 20-yr term from priority
Inventors:Paul Roger ThomasMitchell Andrews
F04B 39/125
41
PatentIndex Score
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Cited by
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References
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Claims

Abstract

A cover for the head of a pump defines one or more cavities with radiused corners between the upper and side surfaces of the cavity so as to form a domed chamber.

Claims

exact text as granted — not AI-modified
1 . A cover for a head of a pump, the head defining at least one chamber for receiving a gas expelled from a pumping chamber of the pump, the head having a mounting surface against which the cover is mounted, comprising: 
 a mounting surface of the cover for meeting with and mounting against the mounting surface of the head;    at least one chamber extending inwardly from the mounting surface of the cover, the chamber opening to the chamber defined by the head and the chamber of the cover having side wall portions extending from the mounting surface of the cover and an inner wall portion that spans the side wall portions, the side wall portions being joined to the inner wall portions by transition zones that are radiused so as to form a domed transition between the side wall portions and the inner wall portion of the cover chamber surfaces.    
   
   
       2 . A cover as claimed in  claim 1 , further comprising a second chamber extending inwardly from the mounting surface of the cover, the chamber opening to the chamber defined by the head and the chamber of the cover having side wall portions extending from the mounting surface of the cover and an inner wall portion that spans the side wall portions, the side wall portions being joined to the inner wall portion by transition zones that are radiused so as to form a domed transition between the side wall portions and the inner wall portion of the cover chamber surfaces.  
   
   
       3 . A cover as claimed in  claim 2 , wherein the cover is adapted to fit a head that defines a single chamber that spans both chambers of the cover.  
   
   
       4 . A cover as claimed in  claim 1 , wherein the radii of the transition surfaces are in the range of 0.02 to 1.5 inches.  
   
   
       5 . A cover as claimed in  claim 1 , wherein the radii of the transition surfaces are in the range of 0.09 to 0.65 inches.  
   
   
       6 . A cover as claimed in  claim 1 , wherein radiused corners join the side wall portions to one another.  
   
   
       7 . A cover as claimed in  claim 1 , wherein the radii of the corners are in the range of 0.02 to 1.5 inches.  
   
   
       8 . A cover as claimed in  claim 1 , wherein the radii of the corners are in the range of 0.09 to 0.65 inches.

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