Liquid adhesive applicator means and associated method
First Claim
1. A portable, hand-held adhesive applicator comprising a reservoir containing liquid adhesive, said liquid adhesive being maintained in said reservoir in an unheated liquid state at room temperature, a cylindrical, rotatable, coating roller in operative communication with said reservoir to receive liquid adhesive from the reservoir for application of a layer of uniform thickness of said adhesive onto a surface to be coated with the adhesive, a removable cover means for selectively enclosing or exposing the coating roller, and means to provide a substantially air-tight closure of the reservoir and coating roller with respect to ambient atmosphere for inhibiting drying of the liquid adhesive when the cover means encloses the coating roller and reservoir whereby the adhesive remains in liquid state in readiness for use, without external heating, to apply a uniformly thin layer of said adhesive onto the surface to be coated, said reservoir having an opening for refilling the reservoir with liquid adhesive, said refilling opening being remote from said coating roller, said reservoir having opposite ends, said coating roller being at one of said ends, said refilling opening including a filling spout at the other of said ends, said filling spout including a removable cap thereon, said cover means comprising a first cover at said one of said ends enclosing the coating roller and a second cover at said other of said ends enclosing said filling spouts and said removable cap, said first and second covers being respectively and independently separable from said reservoir, said reservoir including a portion exposed between said first and second covers and shaped for manual engagement in a hand-held operation of said unit.
1 Assignment
0 Petitions
Accused Products
Abstract
An applicator for applying liquid adhesive to the surface of a sheet of material in which the applicator has a reservoir containing the liquid adhesive and a cylindrical, rotatable, coating roller in operative communication with the reservoir to apply a wide layer of uniform thickness of the adhesive onto the surface. A cover is provided for selectively enclosing the coating roller and the reservoir and providing a substantially air-tight closure of the reservoir and coating roller to inhibit drying of the liquid adhesive. The adhesive remains in liquid state in the reservoir in readiness for use without external heating. The applicator can be in the form of a portable, hand-held unit or a motor-driven automatic unit.
8 Citations
17 Claims
- 1. A portable, hand-held adhesive applicator comprising a reservoir containing liquid adhesive, said liquid adhesive being maintained in said reservoir in an unheated liquid state at room temperature, a cylindrical, rotatable, coating roller in operative communication with said reservoir to receive liquid adhesive from the reservoir for application of a layer of uniform thickness of said adhesive onto a surface to be coated with the adhesive, a removable cover means for selectively enclosing or exposing the coating roller, and means to provide a substantially air-tight closure of the reservoir and coating roller with respect to ambient atmosphere for inhibiting drying of the liquid adhesive when the cover means encloses the coating roller and reservoir whereby the adhesive remains in liquid state in readiness for use, without external heating, to apply a uniformly thin layer of said adhesive onto the surface to be coated, said reservoir having an opening for refilling the reservoir with liquid adhesive, said refilling opening being remote from said coating roller, said reservoir having opposite ends, said coating roller being at one of said ends, said refilling opening including a filling spout at the other of said ends, said filling spout including a removable cap thereon, said cover means comprising a first cover at said one of said ends enclosing the coating roller and a second cover at said other of said ends enclosing said filling spouts and said removable cap, said first and second covers being respectively and independently separable from said reservoir, said reservoir including a portion exposed between said first and second covers and shaped for manual engagement in a hand-held operation of said unit.
- 6. An automatic adhesive applicator comprising a reservoir containing liquid adhesive, said liquid adhesive being maintained in said reservoir in an unheated liquid state at room temperature, a cylindrical, rotatable, coating roller in operative communication with said reservoir to receive liquid adhesive from the reservoir for application of a layer of uniform thickness of said adhesive onto a surface to be coated with the adhesive, a movable cover means for selectively enclosing the coating roller and the reservoir, and means to provide a substantially air-tight closure of the reservoir and coating roller with respect to ambient atmosphere for inhibiting drying of the liquid adhesive when the movable cover means encloses the coating roller and reservoir whereby the adhesive remains in liquid state in readiness for use, without external heating, to apply a uniformly thin layer of said adhesive onto the surface to be coated, said applicator further comprising a base supporting said reservoir and said coating roller, the application of adhesive to the surface to be coated being effected by passing an article whose surface is to be coated on the coating roller, said cover means comprising a roller cover having a first position in which the roller cover encloses the coating roller with said air-tight closure, and a second position in which the roller cover is displaced away from the coating roller to provide access thereto for application of adhesive onto said surface, a counter roller facing said coating roller for feeding therebetween the article whose surface is to be coated with adhesive by said coating roller, drive means for driving said coating roller and said counter roller in rotation, and a deck cover on said base, said deck cover including a flat portion and two spaced dome-like pavilions projecting above said flat portion, said roller cover being fitted between said pavilions, said roller cover having lateral edges which in said first position of the roller cover face said pavilions and a transverse edge extending between said lateral edges facing said flat section of the deck cover.
Specification