Title:
フィードテーブルと旋回支持ピンとの間の離脱防止装置
Document Type and Number:
Japanese Patent JP4486436
Kind Code:
B2
Abstract:
A restraining arrangement (48) for limiting the separation of a feed table (36) having a pivot pin (106) and a positioner block (30) of a mobile track drill. The restraining arrangement includes a first constraint device (114) positioned on the positioner block (30) and a second constraint device (116) secured to the feed table (36). The first constraint device (114), consisting of a bushing (118) having a pair of extending ears (128), is retained within a pair of female constraint members (138) each having a recessed groove (140). The recessed groove (140) formed in each of the pair of female constraint members (138) is sized to receive the extending ears (128) to allow the bushing (118) and the female constraint members (138) to rotate relative to each other while limiting the separation between the feed table (36) and the positioner block (30) along the rotational axis of the pivot pin (106).
Inventors:
James M Bowe
Larry W. McClure
Larry W. McClure
Application Number:
JP2004232963A
Publication Date:
June 23, 2010
Filing Date:
August 10, 2004
Export Citation:
Assignee:
Telex Corporation
International Classes:
E21B7/02; E21B3/04
Domestic Patent References:
| JP11310916A | ||||
| JP2004183312A | ||||
| JP58099389U |
Foreign References:
| US3322378 | ||||
| US4858700 |
Attorney, Agent or Firm:
Kazuo Shamoto
Shinjiro Ono
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Akutsu Katsuhisa
Shinjiro Ono
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Akutsu Katsuhisa