Title: Earth boring tool

Abstract: A roller reamer body is provided with junk receiving pockets that are downward extensions of the body cavities in which the rollers and their shaft mounting blocks are disposed. The slots have upwardly slidably openable or removable outside wall panels so that junk can be dumped from the slots while the reamer is still vertical in the drill string, making it unnecessary to disconnect the reamer to dump the junk.

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Inventors: Garrett, William R. (Houston, TX, US)

Application Number: 873246
Filing Date: 1978-01-30
Publication_date: 1980-02-19
Assignee: Smith International, Inc. (Newport Beach, CA)
Primary Class(es): 175/312 175/39, 175/325.4, 175/346
Other Classes:
US Patent Ref:

1616666	Feb, 1927	Nebergall	175/325.
1996322	Apr, 1935	Carlson	175/345.
2035888	Mar, 1936	Howard	175/347.
2084421	Jun, 1937	Wright	175/406.
2233260	Feb, 1941	Hawthorne	175/408.
2315629	Apr, 1943	LeBus	175/311.
2544728	Mar, 1951	Safford	175/311.
2681795	Jun, 1954	Gregory	175/309.
2738165	Mar, 1956	McNatt	175/308.
2965406	Dec, 1960	LeBu, Sr.	175/308.
3303900	Feb, 1967	Kloese, Jr. et al.	175/406.
3306381	Feb, 1967	Garrett et al.	175/346.
3703096	Nov, 1972	Vitte, Jr. et al.	175/39.
3820613	Jun, 1974	White	175/345.
3907048	Sep, 1975	Gray	175/325.
3945447	Mar, 1976	Peterson	175/334.
3977481	Aug, 1976	Fisk et al.	175/345.
4013325	Mar, 1977	Rear	175/348.

Other Refs:
Primary Examiner: Leppink, James A.
Assistant Examiner: Favreau, Richard E.
Attorney: Robinson; Murray, Conley; Ned L., Rose; David Alan