Inspection system for a defective rotation preventing device in

Details Inspection system for a defective rotation preventing device in Inspection system for a defective rotation preventing device in

1994-04-01

1996-05-07

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418151, 29888022, F01C 104

Patent

active

055139680

ABSTRACT:
An inspection system for a rotation preventing device comprises a balance weight member disposed within a hollow portion of the compressor housing and at least one recessed portion formed in an annular surface of the hollow portion. If, during the assembly of the compressor, a ball from the rotation preventing/thrust bearing device rolls into the hollow portion or is accidentally dropped into the hollow portion, the balance weight member pushes the ball along the annular surface until it falls into the recessed portion. Further rotation of the balance weight locks the ball within the recessed portion, thereby preventing further rotation of the drive shaft. Therefore, defects in assembly due to the rotation prevention mechanism may be easily detected.

REFERENCES:
patent: 4411604 (1983-10-01), Terauchi
patent: 4548556 (1985-10-01), Terauchi
patent: 4552517 (1985-11-01), Shimizu
patent: 5141422 (1992-08-01), Ito et al.

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