Tool driving or impacting – Drive controlled by relative axial movement of tool
Reexamination Certificate
2006-01-17
2006-01-17
Huynh, Louis K. (Department: 3721)
Tool driving or impacting
Drive controlled by relative axial movement of tool
C173S141000
Reexamination Certificate
active
06986394
ABSTRACT:
In the field of borehole creation there is a need for a reciprocable impact hammer with a tool that is rotatable while under load. A reciprocable impact hammer (10) for use in a downhole location comprises a tool support member (11); a hammer member (12); a jack mechanism (13); a connector member (14); and a transmission (16). The transmission (16) converts linear motion of the connector member (14) to rotary motion of the hammer member (12) whereby when a force acts on the connector member (14) via the hammer member (12) and the tool support member (11) operation of the jack mechanism (13) causes initial elongation of the impact hammer (10) followed in succession by:(i) collapsing of the hammer member (12) and the tool support member (11) together such that the hammer member (12) separates from the connector member (14) and imparts an impulse to the tool support member (11); and(ii) movement of the connector member (14) towards the hammer member (12) under the influence of the force whereby the transmission (16) causes rotation of the remainder of the impact hammer (10).
REFERENCES:
patent: 2813516 (1957-11-01), Dulaney
patent: 2988417 (1961-06-01), Emmons et al.
patent: 3946819 (1976-03-01), Hipp
patent: 5131476 (1992-07-01), Harrington
patent: 5139094 (1992-08-01), Prevedel et al.
patent: 5156223 (1992-10-01), Hipp
patent: 5293959 (1994-03-01), Kimberlin
patent: 5305837 (1994-04-01), Johns et al.
patent: 5322136 (1994-06-01), Bui et al.
patent: 5339913 (1994-08-01), Rives
patent: 5564510 (1996-10-01), Walter
patent: 6164393 (2000-12-01), Bakke
patent: 6209666 (2001-04-01), Beccu et al.
patent: 6315063 (2001-11-01), Martini
patent: 6609577 (2003-08-01), Beccu
Chukwurah Nathaniel
Finnegan Henderson Farabow Garrett & Dunner LLP
Huynh Louis K.
Varco I/P Inc.
LandOfFree
Reciprocable impact hammer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reciprocable impact hammer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reciprocable impact hammer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3554352