US2014010692A1PendingUtilityA1

Economical pump

21
Individually held — no corporate assignee on recordPriority: Jul 5, 2012Filed: Jun 24, 2013Published: Jan 9, 2014
Est. expiryJul 5, 2032(~5.9 yrs left)· nominal 20-yr term from priority
Inventors:Allan T. Dike
F04B 53/1005E21B 43/127
21
PatentIndex Score
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Cited by
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References
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Claims

Abstract

A fluid pump can include one section which reciprocates relative to another section, whereby fluid is pumped between the sections. The fluid pump can be devoid of any dynamic seal. Each of the pump sections can include a check valve. Structural components of the pump can be made of a non-metal material. One section can be received in a bore of the other section, and a relatively small gap between the bore and the one section can allow minimal leakage of the fluid between the bore and the one section.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A fluid pump, comprising:
 a first section which reciprocates relative to a second section, whereby fluid is pumped between the first and second sections, and   wherein the fluid pump is devoid of any dynamic seal.   
     
     
         2 . The fluid pump of  claim 1 , wherein the first section is received in a bore of the second section, and a relatively small gap between the bore and the first section allows minimal leakage of the fluid between the bore and the first section. 
     
     
         3 . The fluid pump of  claim 1 , wherein each of the first and second sections comprises a check valve. 
     
     
         4 . The fluid pump of  claim 3 , wherein the check valve comprises a ball which seals against a non-metal seat. 
     
     
         5 . The fluid pump of  claim 4 , wherein the ball is contained in a non-metal casing. 
     
     
         6 . The fluid pump of  claim 1 , wherein the first section is received in a bore of the second section, and wherein recesses are formed on an outer surface of the first section, whereby the recesses reciprocate in the bore. 
     
     
         7 . The fluid pump of  claim 1 , wherein a volume of a chamber of the pump varies in response to reciprocation of the first section relative to the second section. 
     
     
         8 . A fluid pump, comprising:
 a first section which reciprocates relative to a second section, whereby fluid is pumped between the first and second sections, and   wherein each of the first and second sections comprises a check valve.   
     
     
         9 . The fluid pump of  claim 8 , wherein the fluid pump is devoid of any dynamic seal. 
     
     
         10 . The fluid pump of  claim 8 , wherein the first section is received in a bore of the second section, and a relatively small gap between the bore and the first section allows minimal leakage of the fluid between the bore and the first section. 
     
     
         11 . The fluid pump of  claim 8 , wherein the check valve comprises a ball which seals against a non-metal seat. 
     
     
         12 . The fluid pump of  claim 11 , wherein the ball is contained in a non-metal casing. 
     
     
         13 . The fluid pump of  claim 8 , wherein the first section is received in a bore of the second section, and wherein recesses are formed on an outer surface of the first section, whereby the recesses reciprocate in the bore. 
     
     
         14 . The fluid pump of  claim 8 , wherein a volume of a chamber of the pump varies in response to reciprocation of the first section relative to the second section. 
     
     
         15 . A fluid pump, comprising:
 a first section which reciprocates relative to a second section, whereby fluid is pumped between the first and second sections, and   wherein the first section is received in a bore of the second section, and a relatively small gap between the bore and the first section allows minimal leakage of the fluid between the bore and the first section.   
     
     
         16 . The fluid pump of  claim 15 , wherein the fluid pump is devoid of any dynamic seal. 
     
     
         17 . The fluid pump of  claim 15 , wherein each of the first and second sections comprises a check valve. 
     
     
         18 . The fluid pump of  claim 17 , wherein the check valve comprises a ball which seals against a non-metal seat. 
     
     
         19 . The fluid pump of  claim 18 , wherein the ball is contained in a non-metal casing. 
     
     
         20 . The fluid pump of  claim 15 , wherein recesses are formed on an outer surface of the first section, whereby the recesses reciprocate in the bore.

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