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US 4,381,169 AGranted
Manipulator
AssigneeMuhr und Bender KG
InventorsRichard Muhr, Karl Steinhoff
Life of this patent
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Abstract
A support carriage of a manipulator carries an outrigger arm on which is mounted a grab assembly. Upper and lower jaws pivotal on the assembly about respective superposed upper and lower parallel axes can be moved by an actuator head engaging both of these jaws from an open position in which the jaws are pivoted apart from each other to a closed position in which the jaws are pivoted together. The lower jaw is moved at first into the closed position and locked therein before the upper jaw is moved all the way down into the closed position.
Claims10
A manipulator for heavy objects, said manipulator comprising:
- a support carriage;
- a manipulator body fixed on and displaceable with said carriage;
- an upper jaw and a lower jaw pivotal on said body about respective superposed upper and lower parallel axes, said upper jaw being formed with a downwardly directed actuation face and said lower jaw being formed with a generally upwardly directed and flat actuation face;
- and
- actuator means including an actuator head having an arcuate and generally upwardly directed operating face engageable with said downwardly directed face of said upper jaw and a generally downwardly directed and flat actuation face flatly engageable with said upwardly directed face of said lower jaw for displacing same between an open position in which said jaws are pivoted apart from each other and a closed position in which said jaws are pivoted together, the faces being so spaced and oriented that on displacement from said open to said closed position said lower jaw is pivoted up into said closed position before said upper jaw is pivoted down into said closed position.
2 more elements
Dependencies are inferred from the claim text.