Title:
A liquid pressure type sealing device of the discharge valve assembly object of thermoplastics
Document Type and Number:
Japanese Patent JP6141848
Kind Code:
B2
Abstract:
A seal assembly, for use within a hot melt adhesive or other thermoplastic material dispensing valve assembly, comprises a sealing cartridge comprising a first primary seal, a secondary seal, and a viscous incompressible silicone grease disposed internally within the sealing cartridge. The viscous silicone grease effectively distributes the pressure forces such that internal pressure forces within the silicone grease are substantially equal to the external pressure forces of the hot melt adhesive whereby a pressure differential across the primary seal member is effectively eliminated thereby effectively eliminating the tendency for leakage of the hot melt adhesive or other thermoplastic materials.
Inventors:
Grant MAGAFEE
Application Number:
JP2014528505A
Publication Date:
June 07, 2017
Filing Date:
August 28, 2012
Export Citation:
Assignee:
Illinois Tours Works Inc.
International Classes:
F16K41/04; B05B15/00; B05C21/00; F16J15/14; F16J15/16
Domestic Patent References:
| JP2003245581A | ||||
| JP2005503519A |
Foreign References:
| US5056758 | ||||
| US3578341 |
Attorney, Agent or Firm:
Atsushi Aoki
Tetsuro Shimada
Shinji Mitsuhashi
Koichi Ito
Tatsuki Sone
Takuya Shinoda
Tetsuro Shimada
Shinji Mitsuhashi
Koichi Ito
Tatsuki Sone
Takuya Shinoda
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