Abstract: An aperture plate (1) is attached at its rim (203) to a support washer (3) by adhesive. Anchor grooves (204) having a zig-zag pattern in plan are machined in the lower surface of the rim (203 of the aperture plate before application of the adhesive. The grooves (204) extend out to the edge of the aperture plate (1). The anchor grooves have a depth in the range of 10 ?m to 40 ?m, and a width in the range of 20 ?m to 150 ?m, and an angular pitch in the range of 2.5° to 12.5°. Excellent bonding strength is achieved for long term reliable attachment in an environment of high frequency vibration and moisture and chemical corrosion.

Abstract: An aperture plate (1) is attached at its rim (203) to a support washer (3) by adhesive. Anchor grooves (204) having a zig-zag pattern in plan are machined in the lower surface of the rim (203 of the aperture plate before application of the adhesive. The grooves (204) extend out to the edge of the aperture plate (1). The anchor grooves have a depth in the range of 10 ?m to 40 ?m, and a width in the range of 20 ?m to 150 ?m, and an angular pitch in the range of 2.5° to 12.5°. Excellent bonding strength is achieved for long term reliable attachment in an environment of high frequency vibration and moisture and chemical corrosion.

Abstract: An aperture plate (1) is attached at its rim (203) to a support washer (3) by adhesive. Anchor grooves (204) having a zig-zag pattern in plan are machined in the lower surface of the rim (203 of the aperture plate before application of the adhesive. The grooves (204) extend out to the edge of the aperture plate (1). The anchor grooves have a depth in the range of 10 ?m to 40 ?m, and a width in the range of 20 ?m to 150 ?m, and an angular pitch in the range of 2.5° to 12.5°. Excellent bonding strength is achieved for long term reliable attachment in an environment of high frequency vibration and moisture and chemical corrosion.

Abstract: A surgical gown having a central and side portions (hereinafter referred to as panels) and outer belt means. The belt means comprises two tie strings or the like, one of said ties being attached to the central panel of the gown near one of the two side panels. The other tie is attached to the second of the side panels near the outer edge thereof. The free end of each tie is releasably grasped by a transfer device which holds the ties in a position overlying the outer surface of the central panel. During the gowning procedure, the transfer device becomes the means whereby a sterile assistant may effect final closure of the gown without becoming contaminated or whereby a non-sterile assistant may effect final closure of the gown without endangering or destroying the sterile character of the gown. Preferably the gown also comprises inner closure means for further securing the gown in the waist area.