Claims
- 1. A method of applying a liquid to an inner surface of an opening having an up and down orientation in an object, said method comprising:
- providing an elongated tubular applicator having a completely exposed exterior surface and an interior return passage extending longitudinally in said applicator,
- positioning said applicator with an up and down orientation,
- supplying a layer of the liquid continuously to said exposed exterior surface and thereby causing the liquid layer to flow downwardly solely by gravity along said exposed exterior surface with one side of said liquid layer retained on said exposed exterior surface solely by adhesion between said liquid and said exposed exterior surface and with the other side of said liquid layer completely exposed to the outside,
- outwardly deflecting the downwardly flowing liquid layer along said exposed exterior surface and thereby forming an outwardly projecting annular bead of the liquid,
- sucking excess liquid from said exposed exterior surface and into said interior passage in said applicator below said bead to prevent dripping of the liquid from said applicator,
- inserting said applicator into said opening to bring said bead of liquid into contact with said inner surface of said opening,
- producing relative longitudinal movement between said applicator and said inner surface while maintaining said bead of liquid in contact with said inner surface to apply the liquid thereon,
- said exposed exterior surface of said applicator being maintained out of contact with said inner surface of said opening,
- and reversing said relative longitudinal movement to cause withdrawal of said applicator from said opening.
- 2. A method according to claim 1, including regulating said sucking to control the amount of the liquid applied to said inner surface.
Parent Case Info
This application is a continuation of the applicant's copending application, Ser. No. 506,355, filed Sept. 16, 1974, now abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1201935 |
Aug 1970 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
506355 |
Sep 1974 |
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