Plastic and nonmetallic article shaping or treating: processes – Explosive or propellant article shaping or treating – Forming or treating particulate material
Patent
1987-08-03
1990-04-10
Nelson, Peter A.
Plastic and nonmetallic article shaping or treating: processes
Explosive or propellant article shaping or treating
Forming or treating particulate material
264 31, 86 2012, 86 45, 102291, C06B 2100
Patent
active
049158830
ABSTRACT:
An annular bayonet vacuum cup allows a vacuum to be pulled on an annular bayonet and the bayonet to be filled with propellant that is devoid of air. The vacuum cup is transparent/translucent and allows the propellant to be seen as it leaves the exit end of the bayonet. This alerts an operator to cut off the vacuum pressure thereby to keep the excess of propellant flow to a minimum, which excess drops into the vacuum cup and is prevented from contaminating the vacuum line. The vacuum cup is disposable (an O-ring sealing ring being reusable) and eliminates propellant clean-up.
REFERENCES:
patent: 3222433 (1965-12-01), Makay, Jr.
patent: 3405201 (1968-10-01), Roach
patent: 3890877 (1975-06-01), Lista et al.
patent: 3952627 (1976-04-01), Gardiner et al.
patent: 4103584 (1978-08-01), Lista et al.
patent: 4154141 (1979-05-01), Sayles
patent: 4503773 (1985-03-01), Bolieau
Morton Thiokol Inc.
Nelson Peter A.
White Gerald K.
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