Handling: hand and hoist-line implements – Hook – hoistline – or grab type – Locking device
Patent
1987-08-03
1990-01-30
Cherry, Johnny D.
Handling: hand and hoist-line implements
Hook, hoistline, or grab type
Locking device
2941191, 294902, 901 37, 901 39, 269267, B25J 914
Patent
active
048969141
ABSTRACT:
A robotic hand to grasp objects, either of regular or irregular configuration, and to provide information related to the shape of the object. Numerous embodiments are described: each embodiment includes a housing and a plurality of finger units that are deployed from the housing, with tips of fingers contacting the object at a sufficient number of points to support the object. Each finger unit is provided with a guide whereby the finger unit is constrained to move along a fixed path. Pneumatic, hydraulic and electromechanical deployment systems are typically used. Deployment is in unison, individually or in groups. Each finger unit is provided with a suitable form of distance measuring system so as to determine the distance of travel of each finger unit from the housing along the fixed path to its position of contact. Typical systems for distance measurement include resistive, capacitive, inductive and digital encoder reading. The embodiments are of particular value when operated remotely, and where visual observation of an object is obscured. Information obtained from the distance measuring systems is processed in a computer to determine actual shape and other shape parameters of the object.
REFERENCES:
patent: 4047709 (1977-09-01), Thyberg et al.
patent: 4088312 (1978-05-01), Frosch et al.
patent: 4572564 (1986-02-01), Cipolla
patent: 4609220 (1986-09-01), Scott
patent: 4632444 (1986-12-01), Martinez et al.
patent: 4770455 (1988-09-01), Collins, Jr.
Cherry Johnny D.
Kramer Dean J.
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