Machines in which the tool is connected to an impulse member

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Patents Grantslast 30 patents

Information Patent Grant
Drillhead unit
- Patent number 4,294,317
- Issue date Oct 13, 1981
- M.A.T. Industries, Inc.
- Michael J. Amoroso
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hydraulic rock drill with stroke responsive advance
- Patent number 3,945,442
- Issue date Mar 23, 1976
- Chicago Pneumatic Tool Company
- Lester A. Amtsberg
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
3918531
- Patent number 3,918,531
- Issue date Nov 11, 1975
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
3918532
- Patent number 3,918,532
- Issue date Nov 11, 1975
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
3796401
- Patent number 3,796,401
- Issue date Mar 12, 1974
- E21 - EARTH DRILLING MINING
Information Patent Grant
3791460
- Patent number 3,791,460
- Issue date Feb 12, 1974
- E21 - EARTH DRILLING MINING