Tools – Wrench – screwdriver – or driver therefor – Machine
Patent
1984-06-25
1986-06-10
Smith, James G.
Tools
Wrench, screwdriver, or driver therefor
Machine
B25B 1700
Patent
active
045935840
ABSTRACT:
Power tongs are described for making up and breaking apart joints of pipe. The hydraulic system of the tong comprises a tandem fluid motor which enables both forward and reverse operation of the tong in one of several selected speed/torque ranges by operating a pair of control handles. The open throat tong includes a door latching mechanism for automatically locking and unlocking the tong door when activating the tong hydraulic system. The tong dies come into gripping engagement with the pipe over a large composite arcuate angle to increase the pipe gripping ability of the tong.
REFERENCES:
patent: 4215602 (1980-08-01), Carstensen et al.
patent: 4357843 (1982-11-01), Peck et al.
Eckel Manufacturing Co., Inc.
Smith James G.
LandOfFree
Power tongs with improved hydraulic drive does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Power tongs with improved hydraulic drive, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power tongs with improved hydraulic drive will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2402422