Abstract: An ergonomically designed pipette tip that can be securely mounted to a barrel of a pipetter yet is designed to substantially reduce the axial force necessary to install and eject the pipette tip from the pipetter thus reducing the injuries resulting in repetitive stress injury to the thumb and hand. The new ergonomic pipette tip incorporates a separate sealing member constructed from an elastomer that is coupled to the more rigid and chemically inert elongated tubular member that becomes the receptacle for transferring the fluid sample aspirated by the pipetter. The new elastomeric sealing member allows for greater sealing capability or squeeze between the pipetter barrel and the new pipette tip while lowering the coefficient of friction between the mating parts, thus decreasing the axial ejection forces require to overcome the breakaway friction between the new ergonomic pipette tip and the pipetter.

Abstract: An ergonomically designed pipette tip that can be securely mounted to a barrel of a pipetter yet is designed to substantially reduce the axial force necessary to install and eject the pipette tip from the pipetter. An improved pipette tip that includes the addition of an elastomeric material and cooperative means for insuring uniform interference and depth of penetration of the pipetter barrel as successive barrels are inserted and ejected. Also disclosed is an improved multiple-tip configuration with similar features that can be mounted to multiple barrels of a multi-pipetter as one tip instead of 8 or 12 individual tips. The addition of the elastomeric material allows for better sealing and eliminates alignment issues, high installation and ejection requirements while reducing the hand and thumb forces that due to repeated use will sometimes result in repetitive stress injury.

Abstract: An apparatus and method for predicting freeze-thaw durability of a cementitious composition specimen including cycling the specimen below and above the freezing point of water contained in the specimen and identifying the contraction and/or expansion of the specimen during the cycling.

Abstract: An ergonomically designed pipette tip that can be securely mounted to a barrel of a pipetter yet is designed to substantially reduce the axial force necessary to install and eject the pipette tip from the pipetter thus reducing the injuries resulting in repetitive stress injury to the thumb and hand. The new ergonomic pipette tip incorporates a separate sealing member constructed from an elastomer that is coupled to the more rigid and chemically inert elongated tubular member that becomes the receptacle for transferring the fluid sample aspirated by the pipetter. The new elastomeric sealing member allows for greater sealing capability or squeeze between the pipetter barrel and the new pipette tip while lowering the coefficient of friction between the mating parts, thus decreasing the axial ejection forces require to overcome the breakaway friction between the new ergonomic pipette tip and the pipetter.

Abstract: An ergonomically designed pipette tip that can be securely mounted to a barrel of a pipetter yet is designed to substantially reduce the axial force necessary to install and eject the pipette tip from the pipetter. An improved pipette tip that includes the addition of a second elastomeric material and cooperative means for insuring uniform interference and depth of penetration of the pipetter barrel as successive barrels are inserted and ejected. Also disclosed is an improved multiple-tip configuration with similar features as the ergonomic pipette tip that can be mounted to multiple barrels of a multi-pipetter as one tip instead of 8 or 12 individual tips. The secondary elastomeric material allows for better sealing and eliminates alignment issues, high installation and ejection requirements while reducing the hand and thumb forces that due to repeated use will sometimes result in repetitive stress injury.

Abstract: An improved liquid handling needle device for use with the reconstitution of toxic drugs such as those used in chemotherapy and other applications. When diluent, in this example, is added through a septum into a sealed container, a positive pressure builds up. Aerosols containing the reconstituted drugs can be release through the punctured opening exposing personnel to potential contamination. This improved needle device provides a low-cost aerosol resistant vent channel between the outside diameter of the needle and the inside diameter of the tubular member holding it allowing gas diffusion from inside of the sealed container through the vent channel to the outside of the container when said needle device is inserted into the sealed container.

Abstract: The present invention relates to aqueous radiation-curable compositions comprising from 5 to 95% by weight, relative to the total weight of (A) and (B), of at least one water-dilutable (meth)acrylated urethane (A) containing at least one polyethylene glycol segment and at least one pendant hydrophilic group, and from 5 to 95% by weight, relative to the total weight of (A) and (B), of at least one other (meth)acrylated compound (B) selected from the group of water-dispersible(meth)acrylated polyurethanes (B1), water-dilutable (meth)acrylates (B2) different from the (meth)acrylated urethane (A), and mixtures thereof and their use for making inks and overprint varnishes.

Abstract: An injection molded assembly forming a Membrane Pipette Tip having at least one bottom portion including a apex end for receiving a calibrated first volume of fluid, a cavity for holding said volume of fluid and a opening with shoulder for receiving the filter membrane. The pipette tip includes at least one upper body having a first opening for communication to a pipetter and a second opening for receiving the shoulder of the bottom portion. The bottom portion fused at the shoulder to the second opening of the upper body with the membrane therebetween to permanently attach the membrane filter to the pipette tip. The 2 part Membrane Pipette Tip can be constructed as a single tip or a plurality of upper and bottom portions with optional tubular members that can include overflow wells for containing fluid in excess of the first volume of fluid drawn into the Membrane Pipette Tip cavity.

Abstract: A system and method for safely and effectively restraining a person having hands restrained by handcuffs joined by a connecting element is disclosed. An enclosure is placed around the hands and handcuffs the person to be secured. The enclosure includes a pair of walls defining an opening, each wall having a top peripheral edge and an aperture spaced apart from the top peripheral edge. A fastening element is extended through the apertures of the walls and fastened to restrict the movement of the hands and handcuffs of the person. The fastening element encircles the opening and top peripheral edges of the walls of the enclosure but does not encircle the connecting element of the handcuffs.

Abstract: An umbrella base is comprised of a body portion containing a power source for powering umbrella lights or electrical devices or appliances used around the umbrella or other furniture accessory held by the base. A power console is provided for use on or above the base to provide connectivity to the power supply.

Abstract: A light sensor for an ultraviolet lamp system of the type having an electrodeless lamp excited by microwave energy includes a detector configured to detect light generated by the electrodeless lamp. An elongated channel is configured to be interposed between the detector and the electrodeless lamp. The elongated channel has a first aperture and a second aperture defined at opposing ends thereof. The first aperture is configured to receive light generated by the electrodeless lamp. The second aperture is positioned proximate the detector to transmit at least a portion of light received in the first aperture to the detector.

Abstract: An improved liquid handling needle device for use with the reconstitution of toxic drugs such as those used in chemotherapy and other applications. When diluent, in this example, is added through a septum into a sealed container, a positive pressure builds up. Aerosols containing the reconstituted drugs can be release through the punctured opening exposing personnel to potential contamination. This improved needle device provides a low-cost aerosol resistant vent channel between the outside diameter of the needle and the inside diameter of the tubular member holding it allowing gas diffusion from inside of the sealed container through the vent channel to the outside of the container when said needle device is inserted into the sealed container.

Abstract: A wiping cap closure device used for removing the non-calibrated residue fluid attached to the outside surface of a pipette tip during the fluid transfer from a container. The wiping cap is constructed using a conical shaped resilient wiper section extending to a conical tip. The conical shaped wiper section is configured to include at least one helical formed slot extending from said conical tip forming at least one wiping finger. The wiping finger is resiliently held against the outside surface of the pipette tip inserted therethrough during the fluid transfer. The wiping finger provides squeegee like means to remove all of the non-calibrated residue fluid inadvertently attached to the outside surface of the tip as the pipette tip is withdrawn from the container leaving the non-calibrated residue fluid within the container for further evaluations or tests.

Abstract: An ergonomically designed pipette tip that can be securely mounted to a barrel of a pipetter yet is designed to substantially reduce the axial force necessary to install and eject the pipette tip from the pipetter. The ergonomic pipette tip includes molded-in expansion joints and/or the addition of a second elastic material to decrease the amount of force necessary to radially expand the entrance to the pipette tip when the pipetter barrel is guided and stability oriented towards the sealing region of the pipette tip. Also disclosed is an ergonomic adapter with similar features as the tip that can also be mounted to the barrel of the pipetter and attached to a standard pipette tip or a combination of tips. Therefore, the relatively small axial forces necessary for mounting and ejecting the new ergonomic tip and adapter can substantially help to reduce the hand and thumb forces, that due to repeated use, will sometimes result in repetitive stress injury.

Abstract: An apparatus and method of manufacture for a pipette tip having a membrane filter includes a pipette tip having an interior annulus for receiving an exterior perimeter of the membrane filter. A shear plate overlying the pipette tip defines an aperture having a dimension equal to the exterior perimeter of the membrane filter. A cylindrical punch has a path of motion for passing through the aperture in the shear plate to the interior annulus of the pipette tip. Membrane filter material is placed over the shear plate in the path of motion of the cylindrical punch. By the expedient of moving the cylindrical punch through the membrane filter material, the aperture in the shear plate, to the interior annulus of the pipette tip to place sheared filter material over the annulus of the pipette tip. Specific embodiments of pipette tips are illustrated including tips having a first filter for filtering material drawn into the pipette tip and second filters from preventing contamination of the pipette.