CA2156167C - Soupape servant a inverser le debit d'un fluide en pression dans un appareil de percage a percussion - Google Patents

Soupape servant a inverser le debit d'un fluide en pression dans un appareil de percage a percussion Download PDF

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Publication number
CA2156167C
CA2156167C CA002156167A CA2156167A CA2156167C CA 2156167 C CA2156167 C CA 2156167C CA 002156167 A CA002156167 A CA 002156167A CA 2156167 A CA2156167 A CA 2156167A CA 2156167 C CA2156167 C CA 2156167C
Authority
CA
Canada
Prior art keywords
valve
pressure
fluid
passageway
piston
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CA002156167A
Other languages
English (en)
Other versions
CA2156167A1 (fr
Inventor
Chuen-Cheng Fu
Warren T. Lay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Epiroc Drilling Tools LLC
Original Assignee
Ingersoll Rand Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/028,749 external-priority patent/US5301761A/en
Application filed by Ingersoll Rand Co filed Critical Ingersoll Rand Co
Publication of CA2156167A1 publication Critical patent/CA2156167A1/fr
Application granted granted Critical
Publication of CA2156167C publication Critical patent/CA2156167C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Lift Valve (AREA)
  • Earth Drilling (AREA)
CA002156167A 1993-03-09 1994-02-03 Soupape servant a inverser le debit d'un fluide en pression dans un appareil de percage a percussion Expired - Lifetime CA2156167C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/028,749 US5301761A (en) 1993-03-09 1993-03-09 Pressure reversing valve for a fluid-actuated, percussive drilling apparatus
US028,749 1993-03-09
PCT/US1994/001252 WO1994020725A1 (fr) 1993-03-09 1994-02-03 Soupape d'inversion de pression pour appareil de forage a percussion

Publications (2)

Publication Number Publication Date
CA2156167A1 CA2156167A1 (fr) 1994-09-15
CA2156167C true CA2156167C (fr) 2005-12-20

Family

ID=35645787

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002156167A Expired - Lifetime CA2156167C (fr) 1993-03-09 1994-02-03 Soupape servant a inverser le debit d'un fluide en pression dans un appareil de percage a percussion

Country Status (1)

Country Link
CA (1) CA2156167C (fr)

Also Published As

Publication number Publication date
CA2156167A1 (fr) 1994-09-15

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Effective date: 20140203