Abstract: An improved filter element for use in an electrostatic precipitation air cleaning device, the filter element including rod electrodes arranged through a stack of alternating fluted plastic sheets and plate electrodes. Successive plate electrodes are arranged to make contact with an alternating one or the other of the rod electrodes. The plate and rod electrodes may be composed of high impedance materials such as paper and plastic, respectively. An arrangement for removably inserting a filter element into an air cleaning device is provided. The arrangement also removably provides electrical connectivity between the filter element and the air cleaning device. The filter element can thus be readily removed and re-installed by a user.

Abstract: A fracture and wear resistant rock bit is disclosed, which includes a bit body, and at least one roller cone disposed on the bit body adapted such that at least one row of cutting elements disposed on the at least one roller cone defines a gage row. At least one cutting element disposed on the gage row has a fracture toughness of at least 20 ksi (in)0.5 and a wear number of at least 1.5.

Abstract: A fracture and wear resistant rock bit is disclosed, which includes a bit body, and at least one roller cone disposed on the bit body adapted such that at least one row of cutting elements disposed on the at least one roller cone defines a gage row. At least one cutting element disposed on the gage row has a fracture toughness of at least 20 ksi (in)0.5 and a wear number of at least 1.5.

Abstract: A beverage dispenser as provided for use with a container having an adapter with a resealable valve, which is a ball valve, has a valve which includes an engaging mechanism, such as a pin, for mechanically opening the valve in the adapter. The dispenser valve has a handle for rotatable motion, causing the pin to vertically move in contact with the ball valve, thus opening the container so that its contents flow. The valve may also be provided with a rinse water conduit and an opening so that the user can selectively close the adapter valve and rinse the dispenser system. The pin is preferably mounted to an x-shaped support.

Abstract: A beverage dispenser as provided for use with a container which has an adapter with a resealable valve, which is a ball valve. The dispenser has a valve which includes an engaging mechanism, such as a pin for mechanically opening the valve in the adapter. Preferably, the dispenser valve has a handle for rotatable motion, causing an engaging pin to vertically move in contact with the ball valve, thus opening the container such that its contents can flow. The dispenser valve may also be provided with a rinse water conduit and an opening so that the user can selectively close the adapter valve and rinse the dispenser system.