Abstract: Closures are provided consisting of a lid or cap member and a container member. These are inter-engageable with one another. The lid or cap member has a skirt and the container member has an upstanding rim, each of which is of generally polygonal (preferably square) shape. Located on each of the facing walls on each side of the polygonal shape are inter-engageable projections. The inter-engaging surfaces of the projections run substantially in a plane perpendicular to the axis of the polygonal shape and are of relatively small angular extent about that axis. The material of one or both of the skirt and container portion is resiliently elastic. The closure may be assembled with an axial push, and removed by twisting.

Abstract: Closures are provided consisting of a lid or cap member and a container member. These are inter-engageable with one another. The lid or cap member has a skirt and the container member has an upstanding rim, each of which is of generally polygonal shape. Located on each of the facing walls on each side of the polygonal shape are inter-engageable projections. The inter-engaging surfaces of the projections run substantially in a plane perpendicular to the axis of the polygonal shape and are of relatively small angular extent about that axis. The material of one or both of the skirt and container portion is resiliently elastic. The closure may be assembled with an axial push, and removed by twisting.

Abstract: A deflation control valve that automatically varies the rate of gas flow through said control valve to maintain a constant deflation rate during the deflation or exhaust of gas held in a closed pressurisable vessel to which said valve is connectable, wherein said control valve is manually adjustable to set the deflation rate.

Abstract: A writing instrument, which has an inner and outer writing element with separate writing medium reservoirs. The writing elements are coaxially mounted in an outer barrel and axially moveable with respect to one another. A driving mechanism may be actuated to allow a user to selectively extend one writing element. The inner and outer writing elements may have an inner sleeve therebetween to improve, for instance, rigidity of the outer writing element and to prevent contamination of the writing medium reservoirs. An outer sleeve may also be provided over the outer writing element. The outer sleeve can function to hold various components of the outer writing element together, and to allow for clean and easy refill of the outer writing element, especially when the outer writing element is a nib-type writing element with a filler-type reservoir. The writing instrument is designed so that a user can replace the inner and/or outer writing elements when their respective writing medium have been expended.

Abstract: There is provided a medicament dispenser for use with a medicament carrier having a plurality of pockets for containing medicament wherein said pockets are spaced along the length of and defined between two peelable sheets secured to each other, said dispenser having an internal mechanism for accessing said medicament contained within said medicament carrier. The internal mechanism comprises a carrier drive means; indexing means and clutch means, in communication therebetween. The clutch means comprises a gearing surface defining plural gear engagement positions; and plural gear teeth for engaging said plural gear engagement positions. The plural gear teeth are arranged such that at any one time only a single gear tooth engages a single gear engagement position.

Abstract: A writing instrument, which has an inner and outer writing element with separate writing medium reservoirs. The writing elements are coaxially mounted in an outer barrel and axially moveable with respect to one another. A driving mechanism may be actuated to allow a user to selectively extend one writing element. The inner and outer writing elements may have an inner sleeve therebetween to improve, for instance, rigidity of the outer writing element and to prevent contamination of the writing medium reservoirs. An outer sleeve may also be provided over the outer writing element. The outer sleeve can function to hold various components of the outer writing element together, and to allow for clean and easy refill of the outer writing element, especially when the outer writing element is a nib-type writing element with a filler-type reservoir. The writing instrument is designed so that a user can replace the inner and/or outer writing elements when their respective writing medium have been expended.

Abstract: A deflation control valve that automatically varies the rate of air flow through said control valve to provide a constant but adjustable rate of change of pressure during the deflation or exhaust of gas held in a closed pressurisable vessel to which said valve is connectable comprising a valve body having a passage communicatable with said pressurisable vessel, said valve body defining a valve chamber communicating with said passage in which a flexible diaphragm is provided partially or substantially closing said valve chamber, said diaphragm being in sealing abutment with a seat in said valve housing around the periphery of said diaphragm, and forming on the opposing side a part of an exhaust chamber, said diaphragm, in use, being, on the valve chamber side subject to the gas pressure in said pressurisable vessel and, on the opposing side, subject to the gas pressure in the exhaust chamber, which may be atmospheric pressure, and said diaphragm having an aperture or port extending therethrough, and said diaph

Abstract: A deflation control valve that automatically varies the rate of air flow through said control valve to provide a constant but adjustable rate of change of pressure during the deflation or exhaust of gas held in a closed pressurisable vessel to which said valve is connectable comprising a valve body having a passage communicatable with said pressurisable vessel, said valve body defining a valve chamber communicating with said passage in which a flexible diaphragm is provided partially or substantially closing said valve chamber, said diaphragm being in sealing abutment with a seat in said valve housing around the periphery of said diaphragm, and forming on the opposing side a part of an exhaust chamber, said diaphragm, in use, being, on the valve chamber side subject to the gas pressure in said pressurisable vessel and, on the opposing side, subject to the gas pressure in the exhaust chamber, which may be atmospheric pressure, and said diaphragm having an aperture or port extending therethrough, and said diaph

Abstract: A writing instrument, which has an inner and outer writing element with separate writing medium reservoirs. The writing elements are coaxially mounted in an outer barrel and axially moveable with respect to one another. A driving mechanism may be actuated to allow a user to selectively extend one writing element. The inner and outer writing elements may have an inner sleeve therebetween to improve, for instance, rigidity of the outer writing element and to prevent contamination of the writing medium reservoirs. An outer sleeve may also be provided over the outer writing element. The outer sleeve can function to hold various components of the outer writing element together, and to allow for clean and easy refill of the outer writing element, especially when the outer writing element is a porous nib with a filler-type writing medium reservoir. The writing instrument is designed so that a user can replace the inner and/or outer writing elements when their respective writing medium have been expended.

Abstract: A breast pump is disclosed comprising a body (50) with an inlet (84) thereto to receive milk expressed from a woman's breast. The body is formed for releasable attachment to a container for collecting expressed milk and houses a deformable diaphragm (51) which is cyclicly moved by manually or electrically driven actuating lever (53, 54) connected thereto to generate and release cyclicly a negative pressure in the nipple region sufficient to stimulate the nipple area to cause lactation. The pump preferably includes valve (80) mounted in the body so that the negative pressure is created in the pump body only and not in the container for the expressed milk when connected thereto.

Abstract: A container for ink for a writing instrument including a reservoir for containing ink, an ink feed for connection to a writing tip of a writing instrument for conveying ink from the reservoir to the writing tip, and a valve between the reservoir and the ink feed. The valve is subjected on one side to pressure in the ink feed and is subjected on another side to atmospheric pressure. The valve opens when pressure in the ink feed falls sufficiently below the atmospheric pressure acting on the valve, thereby allowing ink to flow from the reservoir to the ink feed.