Fluid handling – With casing – support – protector or static constructional... – Static constructional installations
Patent
1981-09-14
1984-06-05
Schwadron, Martin P.
Fluid handling
With casing, support, protector or static constructional...
Static constructional installations
251 7, 72407, F16L 500
Patent
active
044522711
ABSTRACT:
An extended vertical and parallel squeezing device for plastic pipe in a plastic pipe distribution system for fluent materials such as gas and water. According to the invention, height adjustable valve boxes are provided at predetermined squeeze-off points. The plastic pipe squeeze device comprises a pair of squeeze bars which are rotated about a common axis from above the ground via the valve box. A hollow circular shaft and a second shaft internally therein have pipe engaging members at the lower ends thereof, respectively, and a drive means is provided at the opposite ends of the vertical shaft for relatively rotating same so that the pipe engaging members rotate towards each other to squeeze the plastic pipe therebetween. Stop means are provided to limit the amount of squeeze and avoid damage to the plastic pipe and a spacer, offset from the point of engagement of the pipe engaging members provide space for distortion of the pipe from round to oval as it is squeezed. Cranks at the top and bottom coupled to oppositely rotated screws and a rachet mechanism provide the drive for rotating the inner and outer pipe in opposite relative rotational directions.
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Socket and Saddle Fusion Tools for Plastic Pipe, Plastic Pipe Tools and Equipment, Jan. 1977.
Aldyl "A" New Products, Dupont.
Aldyl "A" Installation, Dupont.
Plastics in Gas Distribution, Dupont.
Handley Industries, Inc.
Novack Sheri
Schwadron Martin P.
Zegeer Jim
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