Glass tube and thermoplastic resin finger grip sleeve assembly

Claim 1

A glass tube and non-glass finger grip arrangement for use particularly in packaging and subsequent dispensing of chemicals, comprising a length of substantially constant diameter die-formed glass tube having a peripheral wall with a die-formed bore and outer annular surface, the diameters both of which bore and outer annular surface are each at least several times the thickness of said peripheral wall whereby said glass tube is thin-walled relative to both its outer and bore diameters, and a sleeve of thermoplastic resin having a laterally extending finger-grip protrusion integrally formed thereon, said sleeve having an annularly substantially continuous substantially constant diameter inner bore wall in solely friction-retained engagement in a stretched-fit friction-retained state over and along one end of said glass tube, the diameters of both the bore and the outer annular surface of said glass tube being at least several times the wall thickness of the longitudinally extent of said sleeve extending over and along said glass tube. said tube having raised surface projections on the outer annular surface beneath and contiguous with the inner surface of said sleeve, said surface projections being of substantially smaller radial thickness than the adjoining overlying portion of said sleeve.