Abstract: A method of cutting a hole in the wall of a pliable tube in which the tube is flattened and is held with the walls touching each other and in which a plug is cut in one of the sidewalls while the tube is in this flattened position.

Abstract: A squeeze-type dispenser for a powdered material, commonly known as a puffer duster, for producing a cloud of appropriate treating powder for the control of insects and other infestations, and for similar purposes, in which a squeeze container has a wall that is deformable to decrease the volume of the container and produce a pressurized air source therein to force a stream of air through a passage to a connected nozzle, the passage comprising a thin walled tube connected with the nozzle and having restricted inlet openings so arranged that in any position of a partially filled container, there will be at least one opening positioned in the powder and another opening positioned in an air space within the container, whereby movement of the pressurized air to the nozzle will carry powder from the container to a tube section which is devoid of openings and wherein the powder and air will be mixed in such a manner that the powder will be ejected from the nozzle in the form of a dusting cloud.

Abstract: A safety closure for a container comprising an inner cap with a top and cylindrical collar having threads mating with threads on the container and a central longitudinal extending recess; an outer cap having a top and a cylindrical collar fitting concentrically about the collar of the inner cap, the outer cap being freely rotatable relative to the inner cap in the direction of loosening the inner cap member from the neck of the container, having cooperable locking means with the inner cap for tightening the inner cap member on the neck of the container, the top of the outer cap having a central longitudinal extending opening adapted to be moved into and out of alignment with the recess on the inner cap member by rotation of the outer cap member relative to the inner cap member; and means to prevent insertion of a key device into the aligned opening and recess without the application of pressure on the key device.

Abstract: A safety cap having means for signalling when the cap is tightly screwed onto the container comprising a cap member and a driver member surrounding the cap member with inner engaging means positioned between the driver member and the cap member for rotating the cap member in a direction to screw it onto the neck of the container, the means giving a signal when the cap is tightly screwed in place.

Abstract: A tamperproof screw cap for a container which may be locked in place on the container spout, including a lock-band surrounding the cap and having one-way teeth thereon engageable with one-way teeth surrounding the spout which permits the cap to be screwed into place but prevents the cap from being unscrewed until said lock-band is removed.