Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1985-02-26
1987-03-03
Lowe, James
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29460, 264269, 26432816, 264127, B29C 4514, F16K 302
Patent
active
046464077
ABSTRACT:
A method of constructing a gate valve includes the step of placing a slidable valve gate (46) in a valve cavity (16) between aligned holes (21) of a valve body (10) in a position for closing a fluid passage through the body. Removable mold fixtures (22, 24 and 26) are attached at each opening into the valve body for covering it and thereby preventing liquid material from flowing out of the hole. The valve body (10) and its attachments are heated and a molten resinous material is inserted into the valve cavity so as to surround the aligned holes (21) and to fill spaces between the body (10) and the valve gate (46). The valve body and the resinous material are then allowed to cool so that the resinous material hardens to form a valve liner in which the valve gate moves for opening and closing the fluid passage (80). The mold fixtures are shaped to form flange rings (76, 78) outside the valve-body openings and to form a cavity (84) for packing material (86). A fluoropolymer is used as the resinous material.
REFERENCES:
patent: 3026899 (1962-03-01), Mischanski
patent: 3206530 (1965-09-01), Boteler
patent: 3407838 (1968-10-01), Boteler
patent: 3438388 (1969-04-01), Shenck, Jr.
patent: 3459213 (1969-08-01), Schenck, et al.
patent: 3545480 (1970-12-01), Gustafson
patent: 3825030 (1974-07-01), Kalsi
patent: 4377274 (1983-03-01), Mayhew
DuPont, "Injection Molding Guide for Melt Processible Fluoropolymers".
DuPont, "Chemical Use Temperature Guide".
DuPont, "Safety in Handling and Use", Tefzel.
Preliminary Information from Technical Services Laboratory about DuPont Teflong (Fluorocarbon Resin and DuPont Tefzel Fluoropolymer), PIB #36 (Revised).
Alphabet Inc.
Lowe James
LandOfFree
Method of making corrosion resistant valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of making corrosion resistant valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making corrosion resistant valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1009213