Joint for coupled pile driving mandrel
United States Patent 3365220
US Patent References:
/0456756.html
- - 0456756
Drill stem coupling
- - 2075483
Spout with adjustable discharge head
- - 2790632
Rock drills
- - 2819880
Core structures for driving and retapping shell type piles
- - 2996887
/0456756.html
- - 0456756
Drill stem coupling
- - 2075483
Spout with adjustable discharge head
- - 2790632
Rock drills
- - 2819880
Core structures for driving and retapping shell type piles
- - 2996887
Inventors:
Fredric, Rusche
Publication Date:
01/23/1968
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Primary Class:
Other Classes:
285/397, 285/330, 403/365, 285/305, 285/306
International Classes:
E02D5/52; E02D7/30; E02D5/22; E02D7/00
US Patent References:
| 3198555 | Pipe coupling with lug engaging rotatable collar |
Foreign References:
| GB191517310A | ||||
| GB668607A | ||||
| IT564671B | ||||
| NO102707A |