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Publication numberUSD566137 S1
Publication typeGrant
Application numberUS 29/283,821
Publication dateApr 8, 2008
Filing dateAug 24, 2007
Priority dateAug 11, 2006
Publication number283821, 29283821, US D566137 S1, US D566137S1, US-S1-D566137, USD566137 S1, USD566137S1
InventorsDavid R. Hall, Ronald Crockett, Scott Dahlgren, Jeff Jepson
Original AssigneeHall David R, Ronald Crockett, Scott Dahlgren, Jeff Jepson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Pick bolster
US D566137 S1
Abstract  available in
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  1. The ornamental design for a pick bolster, as shown and described.

FIG. 1 is a top plan view of a pick bolster showing our new design.

FIG. 2 is a bottom plan view thereof.

FIG. 3 is a side view thereof.

FIG. 4 is a bottom perspective view thereof; and,

FIG. 5 is a top perspective view thereof.

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US8281882May 29, 2009Oct 9, 2012Schlumberger Technology CorporationJack element for a drill bit
US8297378Nov 23, 2009Oct 30, 2012Schlumberger Technology CorporationTurbine driven hammer that oscillates at a constant frequency
US8360174Jan 30, 2009Jan 29, 2013Schlumberger Technology CorporationLead the bit rotary steerable tool
US8499857Nov 23, 2009Aug 6, 2013Schlumberger Technology CorporationDownhole jack assembly sensor
US8522897Sep 11, 2009Sep 3, 2013Schlumberger Technology CorporationLead the bit rotary steerable tool
US9518464May 18, 2015Dec 13, 2016The Sollami CompanyCombination polycrystalline diamond bit and bit holder
USD620510 *Feb 26, 2008Jul 27, 2010Schlumberger Technology CorporationDrill bit
USD674422 *Oct 15, 2010Jan 15, 2013Hall David RDrill bit with a pointed cutting element and a shearing cutting element
USD678368 *Oct 15, 2010Mar 19, 2013David R. HallDrill bit with a pointed cutting element
U.S. ClassificationD15/21, D15/29