Boring or penetrating the earth – Bit or bit element – Impact or percussion type
Patent
1998-05-29
2000-02-08
Dang, Hoang
Boring or penetrating the earth
Bit or bit element
Impact or percussion type
175413, 175415, E21B 1036
Patent
active
060218568
ABSTRACT:
A downhole hammer bit including at least one bit impact head mounted to a vertical guide member by a plurality of retaining ring segments. Opposed surfaces of the bit impact head and the guide member have corresponding circumferential grooves or groove sections that define a channel or channel sections, respectively, for receiving the retaining ring segments. The retaining ring segments are inserted into the respective channel/channel section via a bore that extends from an external surface of the hammer bit. A pin disposed in the bore retains the retaining ring segments in the channel/channel section. The retaining ring segments engage the upper and lower surfaces of the channel/channel sections along an extended arc, reducing the stress and possibility of mechanical failure.
REFERENCES:
patent: 1726049 (1929-08-01), Swift et al.
patent: 2215494 (1940-09-01), Athy
patent: 2243319 (1941-05-01), Ross
patent: 2252912 (1941-08-01), Armentrout
patent: 2336333 (1943-12-01), Zublin
patent: 2949909 (1960-08-01), Macchioni et al.
patent: 3152654 (1964-10-01), Conover
patent: 3735820 (1973-05-01), Curington
patent: 4083415 (1978-04-01), Kitat et al.
patent: 4502734 (1985-03-01), Allan
patent: 4527641 (1985-07-01), Klemm
patent: 4962822 (1990-10-01), Pascale
patent: 5052503 (1991-10-01), Lof
patent: 5065827 (1991-11-01), Meyers
patent: 5139099 (1992-08-01), Hayashi et al.
patent: 5647447 (1997-07-01), Jones
Dang Hoang
Numa Tool Company
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