EP 0353280 A4 19910403 - METHOD AND APPARATUS FOR COATING INTERNAL CAVITIES

Title (en)

METHOD AND APPARATUS FOR COATING INTERNAL CAVITIES

Publication

EP 0353280 A4 19910403 (EN)

Application

EP 89902131 A 19890113

Priority

US 14380488 A 19880114

Abstract (en)

[origin: WO8906757A1] An apparatus for coating a hollow object at precise bands within the internal cavity of the object, and the resulting product. Selected portions of the internal cavity (19) of a hollow object, such as a threaded fastener (4), are coated using a rotating probe (170) having at least one opening (176) through which fluid coating material is dispensed by centrifugal force. The probe (170) moves vertically up and then down through the fastener (4) while fluid, moved through the probe (170) by a metering pump (75), is dispensed over a predetermined portion of the path. A computer controls fluid pumping rate, and a vertical movement and rotational speed of the probe (170) to precisely coat a band on the internal cavity (19) of the fastener (4). One product that can be made by the inventive process is a fastener nut having threads coated with "Teflon".

IPC 1-7

F16B 37/00; B05B 3/02; B05B 9/03; B05B 12/04; B05B 13/04; B05B 13/06; B05B 15/02; B05D 1/02; B05D 5/08; B05D 7/22; B05D 7/24

IPC 8 full level

F16B 33/06 (2006.01); B05B 13/06 (2006.01); B05C 7/02 (2006.01); B05D 1/02 (2006.01); B05D 7/22 (2006.01)

CPC (source: EP KR)

B05B 3/1064 (2013.01 - EP); B05B 13/0636 (2013.01 - EP); B05D 7/22 (2013.01 - EP); F16B 37/00 (2013.01 - KR); F16B 33/06 (2013.01 - EP)

Citation (search report)

[X] US 3252442 A 19660524 - HAZLETT WILLIAM A
[X] AT 383053 B 19870511 - INDUSTRIEANLAGEN PLANUNGS UND [AT]
See references of WO 8906757A1

Designated contracting state (EPC)

AT BE CH DE FR GB IT LI LU NL SE

DOCDB simple family (publication)

WO 8906757 A1 19890727; BR 8900149 A 19890912; CA 1337031 C 19950919; CN 1038226 A 19891227; EP 0353280 A1 19900207; EP 0353280 A4 19910403; JP H03502546 A 19910613; KR 900700778 A 19900817; MX 166819 B 19930208

DOCDB simple family (application)

US 8900168 W 19890113; BR 8900149 A 19890113; CA 588147 A 19890113; CN 89101536 A 19890114; EP 89902131 A 19890113; JP 50198289 A 19890113; KR 890701699 A 19890912; MX 1451589 A 19890112