Abstract: A door safety device for either a hinged or a sliding door which when closing places the vertical door side edge in a position abutting the vertical face of either of two sides of a door jamb, or the vertical face of another sliding door, or the threshold end of a sliding door track. The device employs a body in pivotal engagement with a resilient body for positioning the body in an as-used position between the door side edge and the vertical face to maintain a gap to prevent finger crushing. A curved leading edge provides a deflection of impact forces upon the resilient body to prevent marring of the vertical face of the door jamb or threshold.

Abstract: A method for forming a maintenance hole base for the bottom surface of a maintenance shaft using a configurable modular mold and thermoforming or rotational molding. The modular mold is formed of individual members of groups of central core components engageable to surrounding periphery components to yield a mold which will form the appropriate engagement and communication pathways for the base when installed. Polymeric material is employed with the mold to yield a finished component configured for use in the base of the maintenance shaft.

Abstract: A device for preventing injury between the surfaces of the leading edge of a closing door and an edge of a recess surrounded by a door jamb which surrounds the door when closed. The device features a housing and two sequential translating members which contact the recess edge and maintain a gap between it and the door edge for a dwell time which the second member remains between the two edges.

Abstract: A method for forming a maintenance hole base for the bottom surface of a maintenance shaft using a configurable modular mold and thermoforming or rotational molding. The modular mold is formed of individual members of groups of central core components engageable to surrounding periphery components to yield a mold which will form the appropriate engagement and communication pathways for the base when installed. Polymeric material is employed with the mold to yield a finished component configured for use in the base of the maintenance shaft.

Abstract: A door safety device for either a hinged or a sliding door which when closing places the vertical door side edge in a position abutting the vertical face of either of two sides of a door jamb, or the vertical face of another sliding door, or the threshold end of a sliding door track. The device employs a body in pivotal engagement with a resilient body for positioning the body in an as-used position between the door side edge and the vertical face to maintain a gap to prevent finger crushing. A curved leading edge provides a deflection of impact forces upon the resilient body to prevent marring of the vertical face of the door jamb or threshold.

Abstract: A device for preventing injury between the surfaces of the leading edge of a closing door and an edge of a recess surrounded by a door jamb which surrounds the door when closed. The device features a housing and two sequential translating members which contact the recess edge and maintain a gap between it and the door edge for a dwell time which the second member remains between the two edges.

Abstract: A door safety device for either a hinged or a sliding door which when closing places the vertical door side edge in a position abutting the vertical face of either of two sides of a door jamb, or the vertical face of another sliding door, or the threshold end of a sliding door track. The device employs a body in pivotal engagement with a resilient body for positioning the body in an as-used position between the door side edge and the vertical face to maintain a gap to prevent finger crushing. A curved leading edge provides a deflection of impact forces upon the resilient body to prevent marring of the vertical face of the door jamb or threshold.

Abstract: A door safety device for either a hinged or a sliding door which when closing places the vertical door side edge in a position abutting the vertical face of either of two sides of a door jamb, or the vertical face of another sliding door, or the threshold end of a sliding door track. The device employs a body in pivotal engagement with a resilient body for positioning the body in an as-used position between the door side edge and the vertical face to maintain a gap to prevent finger crushing. A curved leading edge provides a deflection of impact forces upon the resilient body to prevent marring of the vertical face of the door jamb or threshold.

Abstract: An alarm equipped door safety device for engagement at the hinge-side of a door's interface with a door jamb. The device is formed of an elastic body which prevents closure of the door to provide protection against crushing of a finger or object between the door and jamb. To provide warning and protect the door, the door jamb, and the hinges from stress damage, a body-compression activated switch generates a sonic alarm when closure of the door is attempted with the device engaged.

Abstract: A thumbnut for use with a convex surface is provided with a plastic sheath in which the bottom face thereof has a series of projections arranged in a circumferential manner like the numerals on a clock face. Once the thumbnut is threadedly engaged with a bolt extending from the convex surface, these projections react in a ratchet-like manner with that surface. As the thumb nut is tightened the projections cause it to move alternatively from unstable "override" positions to stable "straddle" positions which effectively lock the thumbnut with respect to the convex surface, regardless of the amount of torque applied to the thumbnut.

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: Our invention relates to a wheeled fertilizer or other granular material spreader which is pushed over the area or surface to be treated. The granular material is dropped through feed openings onto the surface to be treated, the metering of the granular material being accomplished by placing the metering blade in a desired position or positions depending upon what particular granular material is being discharged from the hopper.

Abstract: A powder dispersing device having an open ended container adapted to contain a powder, a diaphragm movable toward and away from the open end of the container whereby the powder is agitated and air is caused to flow into an annular outlet passage, there being venturi openings between the interior of the container and the outlet passage whereby the powder is sucked into the outlet passage and caused to flow outwardly therefrom in the form of a powder-in-air dispersion.

Abstract: Our invention relates to a wheeled fertilizer spreader which is pushed over the area which is to be fertilized or chemically treated and in which the fertilizer, chemical or other granular material is broadcast by being dropped onto a horizontal impeller which rotates on a vertical axis and throws the material outward horizontally in a frontal direction.

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.