Class 141/8 - Vacuum

Subclass of Class 141 - Fluent material handling, with receiver or receiver coacting means
Definition: Processes in which gaseous material is removed from a receiver.
No. of patents: 125
Last issue date: 10/11/2011

Number	Title	Issue Date
4058252	Automatic sample processing apparatus An automatic sample preparation apparatus including a centrifuge apparatus for centrifugally separating the lighter components of a sample mixture from its heavier components and an automatic sample loading apparatus which utilizes centrifugal forces to l...	11/15/1977
3973310	Method of and an apparatus for filling membrane cassettes For filling and adjusting double-membrane cassettes acting as link members in piston metering pumps, the sealing surfaces of the membranes are first coated with a resilient pressure-deformable cement. The membrane cassette is introduced still unclosed int...	08/10/1976
3964527	Method and apparatus for filling spacing core Spacing core materials, such as honeycomb, may be filled with fiberous insulation batting by placing the spacing core on a vibrator over the batting. The lower edges of the core cut through the fiberous material and permit it to fill the core. Additionall...	06/22/1976

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