| US 7,600,823 B2 | ||
| Pick assembly | ||
| David R. Hall, 2185 S. Larsen Pkwy., Provo, Utah 84606 (US); Ronald Crockett, 2185 S. Larsen Pkwy., Provo, Utah 84606 (US); Scott Dahlgren, 2185 S. Larsen Pkwy., Provo, Utah 84606 (US); and Jeff Jepson, 2185 S. Larsen Pkwy., Provo, Utah 84606 (US) | ||
| Filed on Aug. 24, 2007, as Appl. No. 11/844,586. | ||
| Application 11/844586 is a continuation in part of application No. 11/829761, filed on Jul. 27, 2007. | ||
| Application 11/829761 is a continuation in part of application No. 11/773271, filed on Jul. 03, 2007. | ||
| Application 11/773271 is a continuation in part of application No. 11/766903, filed on Jun. 22, 2007. | ||
| Application 11/766903 is a continuation of application No. 11/766865, filed on Jun. 22, 2007. | ||
| Application 11/766865 is a continuation in part of application No. 11/742304, filed on Apr. 30, 2007, granted, now 7,475,948. | ||
| Application 11/742304 is a continuation of application No. 11/742261, filed on Apr. 30, 2007, granted, now 7,469,971. | ||
| Application 11/742261 is a continuation in part of application No. 11/464008, filed on Aug. 11, 2006, granted, now 7,338,135. | ||
| Application 11/464008 is a continuation in part of application No. 11/463998, filed on Aug. 11, 2006, granted, now 7,384,105. | ||
| Application 11/463998 is a continuation in part of application No. 11/463990, filed on Aug. 11, 2006, granted, now 7,320,505. | ||
| Application 11/463990 is a continuation in part of application No. 11/463975, filed on Aug. 11, 2006, granted, now 7,445,294. | ||
| Application 11/463975 is a continuation in part of application No. 11/463962, filed on Aug. 11, 2006, granted, now 7,413,256. | ||
| Application 11/463962 is a continuation in part of application No. 11/463953, filed on Aug. 11, 2006, granted, now 7,464,993. | ||
| Application 11/829761 is a continuation in part of application No. 11/695672, filed on Apr. 03, 2007, granted, now 7,396,086. | ||
| Application 11/695672 is a continuation in part of application No. 11/686831, filed on Mar. 15, 2007, granted, now 7,568,770. | ||
| Prior Publication US 2008/0035386 A1, Feb. 14, 2008 | ||
| Int. Cl. E21C 35/18 (2006.01) | ||
| U.S. Cl. 299—106 [299/104; 299/113] | 25 Claims |
| 1. A high-impact resistant pick in a holder, comprising;
a super hard material bonded to a cemented metal carbide substrate at a non-planar interface;
the cemented metal carbide substrate being bonded to a front end of a cemented metal carbide bolster;
a bore formed in a base end of the carbide bolster generally opposed to the front end; and
a steel shank being fitted into the bore of the bolster at a bolster end of the shank, and a portion of the shank being disposed
within a bore of the holder at a holder end of the shank;
wherein a weeping seal is disposed around the shank and positioned proximate the opening of the bore such that is limites
the rate at which lubricant is expelled from the bore.
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