Method and means for limiting the extent of release travel of pi

Details Method and means for limiting the extent of release travel of pi Method and means for limiting the extent of release travel of pi

1987-06-23

1988-05-03

Marbert, James B.

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Locking device

294106, 294115, B25B 1508, B75J 1500

Patent

active

047415681

ABSTRACT:
A piston-operated robotic gripper system has gripper means including a piston mounted within a cylinder for movement between a first position and a second position, with the piston operatively linked to move grasping means between a first retracted position and a second extended position corresponding to the first and second piston positions, respectively. Conduit means are connected to first and second sides of the piston to introduce pressurized fluid into the cylinder on the first side of the piston to cause the piston and grasping means to move to their first positions and to introduce pressurized fluid into the cylinder on the second side of the piston while exhausting the fluid from the cylinder on the first side of the piston to cause the piston and grasping means to move to their second positions. Valve means located in conduit means connected to the second side of the piston stops the exhausting of fluid from the cylinder on the first side of the piston, so that the remaining fluid on that side will increase in pressure until the force acting on the first side of the piston equals the force acting on the second side of the piston, thereby causing the piston and the grasping means to be held at positions intermediate to their first and second positions.

REFERENCES:
patent: 4607893 (1986-08-01), Nusbaumer et al.
patent: 4660877 (1987-04-01), Schmidt et al.

Affiliated with

Also associated with

Rating

Method and means for limiting the extent of release travel of pi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and means for limiting the extent of release travel of pi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and means for limiting the extent of release travel of pi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1501978