Method of making a dynamic seal for a liquid pump or spray gun

Details Method of making a dynamic seal for a liquid pump or spray gun Method of making a dynamic seal for a liquid pump or spray gun

1991-09-09

1992-05-26

Silbaugh, Jan H.

Metal working

Method of mechanical manufacture

Combined manufacture including applying or shaping of fluent...

298883, 264242, 264262, 264263, 264267, B29C 4318

Patent

active

051155524

ABSTRACT:
To seal against liquid leaking out around a rod which is slidably movable lengthwise axially within a chamber containing the liquid through an opening in the rear wall of the chamber, a ring of thermoplastic material is placed in the chamber around the rod and pressed against the rear wall of the chamber while applying heat to cause the thermoplastic material to flow into the opening around the rod and onto the outside of the wall so that when the heat is removed the material sets and latches itself onto the rear wall to seal off the space around the rod while still allowing the rod to slide easily.

REFERENCES:
patent: 2853321 (1958-09-01), Davey
patent: 3129009 (1964-04-01), Simpson
patent: 3209830 (1965-10-01), Orr et al.
patent: 3754317 (1973-08-01), Taylor
patent: 3928103 (1975-12-01), Hipsher et al.
patent: 4196162 (1980-04-01), Stichter
patent: 4441721 (1984-04-01), Harris et al.
patent: 4740347 (1988-04-01), Sloan, Jr. et al.
patent: 4869603 (1989-09-01), Melzer et al.

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