Static dissipative coupling of an article-pickup tip to a wand

Details Static dissipative coupling of an article-pickup tip to a wand Static dissipative coupling of an article-pickup tip to a wand

1994-02-16

1996-04-30

Cherry, Johnny D.

Handling: hand and hoist-line implements

Utilizing fluid pressure

Venturi effect

361220, B25J 1506, H05F 304

Patent

active

055118402

ABSTRACT:
A vacuum-actuated article handling tool includes an electrically conductive wand body that is selectively coupled to a pickup tip by a static dissipative connecting assembly. The connecting assembly preferably includes a rigid, electrically insulative cap. The cap is rigid in order to securely hold the tip and is electrically insulative in order to prevent direct contact of the conductive tip to the conductive wand body. The connecting assembly includes a resistive member that is preferably flexible. The flexibility allows the resistive member to conform to the shape and position of the tip, so that a repeatable tip-to-wand electrical connection is made. The resistive member is formed of a material that achieves a desired current-limiting resistive path, thereby providing protection for handled articles that are susceptible to damage by electrostatic discharge.

REFERENCES:
patent: 3711742 (1973-01-01), Pinkham
patent: 3982157 (1976-09-01), Azuma et al.
patent: 4744594 (1988-05-01), Poli et al.
patent: 4866565 (1989-09-01), Wray
patent: 5106139 (1992-04-01), Palmer et al.
patent: 5118153 (1992-06-01), Allison et al.
patent: 5169192 (1992-12-01), Allison et al.
patent: 5217273 (1993-06-01), Hendricsen et al.
patent: 5280979 (1994-01-01), Poli et al.

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