Sheet feeding or delivering – Feeding – Separators
Patent
1988-03-21
1989-04-18
Shaver, Kevin P.
Sheet feeding or delivering
Feeding
Separators
271 90, B65H 308
Patent
active
048220221
ABSTRACT:
A device for lifting a limp sheet member is disclosed. This device comprises a first tubular sleeve member which encloses an elongated interior region extending along a reference axis. The sleeve member has substantially planar, circular, aperture-defining rim disposed about and coaxial with the reference axis at the distal end of the interior region. The proximal end of the interior region is coupled to a region of relatively low pressure. The device also comprises structure for defining a composite airflow path from a region of relatively high pressure, through the first rim and interior region to the low pressure region, and includes vanes, grooves or sleeves for establishing an airflow vortex in the composite airflow path substantially at the first rim and disposed about the reference axis.
REFERENCES:
patent: 3993301 (1976-11-01), Vits
patent: 4632046 (1986-12-01), Barrett et al.
patent: 4638749 (1987-01-01), Wood
patent: 4641827 (1987-02-01), Walton et al.
patent: 4645193 (1987-02-01), Walton et al.
patent: 4735449 (1988-04-01), Kuma
Technical Digest, No. 20, Oct. 1970, "Pickup and Orienting Tool", by D. Demuzio, H. Huber.
Ito (Attenasio) "Design of a Vacuum Picker for Automated Handling of Textiles", Bachelor of Science Thesis, MIT, submitted Jun. 1, 1987.
Beegle Mona C.
Shaver Kevin P.
The Charles Stark Draper Laboratory Inc.
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