Abstract: The present invention relates to an apparatus for growing tissue culture in vitro. The apparatus features a housing which fits into a well containing media. A bottom membrane surface is maintained at a depth within the well, and the housing centered in the well by a flange and rim which cooperate with the well.

Abstract: A tissue culture cluster dish having a multi-well base and detached cover. The cover may be mounted on the base in a partially open position to provide access to the wells by a pipette or other instrument operated by the user while the cover acts as a shield against airborne contaminants.

Abstract: A disc pack assembly having a top cover and a bottom cover which together define a housing that contains the magnetic disc and hub assembly. An opening in the bottom cover is closed by a removable cover. The opening in the bottom cover provides access for the drive spindle which engages and rotatably supports the disc and hub assembly when the pack without the removable cover is mounted on a computer. The magnetic memory disc and hub assembly is afforded limited axial and radial movement within the housing when the removable cover is removed, but the removable cover includes a retaining ring which both supports and fixes the disc and hub assembly in the housing by engaging the hub through the opening when the removable cover is in place on the pack.

Abstract: A bottle with a two position cap for sealing and venting the bottle. The bottle has an opening defined by a neck and the neck has external helix threads. The threads are divided into two threaded segments separated by two diametrically opposed unthreaded regions. Each of these threaded segments lies between large ribs on the neck and the bottle opening. The large ribs extend half way around the external surface of the neck. Indexing ribs extend axially on the neck. The bottle cap has internal helix threads that also are divided into two threaded segments separated by two diametrically opposed unthreaded regions as on the neck of the bottle. A pair of spherical detents on the cap lie between each threaded segment and the open end of the cap such that each pair of detents may snap over one of the large ribs on the neck with a detent on each side of an indexing rib to loosely hold the cap on the bottle and indicate that the cap is in a venting position.

Abstract: A bean sprouter having a base with a fresh water reservoir and a collection chamber for waste water used to wash the sprouts. The sprouts are grown in a container that sits on the base. A timer-motor drives a pump which draws water from the reservoir into the growing container so as to maintain a moist atmosphere for growing and provide moisture for washing the sprouts. The timer is set to run the motor for brief periods at selected intervals.

Abstract: A ribbon cartridge for high speed printers having a main ribbon storage casing and a pair of arms which extend in generally the same direction from the casing. The ends of the arms form an exposed ribbon path to allow the printhead to strike the ribbon. A shield is provided in front of the ribbon to prevent the accordion folds of the paper from engaging and lifting the ribbon out of the path of the printhead.

Abstract: A ribbon cartridge for use in a high speed band printer includes a body having a ribbon storage compartment where the ribbon is contained in a multiplicity of serpentine folds. The body has a ribbon inlet and an outlet end and guide arms extend from the inlet and outlet ends to guide the endless ribbon into and out of the cartridge and to define an exposed loop of the ribbon between the outermost end of the guide arms. The outlet end and outlet arm of the cartridge is formed to define a ribbon inverting device which serves to invert the ribbon 180.degree. each time the ribbon passes through the device.

Abstract: This invention relates in general to a disc pack cartridge and more particularly pertains to a handle for a single disc cartridge which incorporates an improved mechanism that enables unlatching of the removable bottom cover of the cartridge. An improved manner of mounting the handle on the top cover is incorporated in the assembly to facilitate assembly, simplify the handle structure and make the handle mount more secure.

Abstract: A tissue culture cluster dish having a multi-well base and detached cover. The cover may be ounted on the base in a partially open position to provide access to the wells by a pipette or other instrument operated by the user while the cover acts as a shield against airborne contaminants.

Abstract: A storage rack for video tape cartridges permitting storage of a plurality of cartridges in a close linear array and arranged for ease of individual selection. The rack is preferably constructed of plastic having an open front and internal divider walls sectioning the rack into closely adjacent cartridge compartments. The base of the rack has a rear section maintaining the cartridge normally in a rearwardly tilted position and a front section sloped forwardly so as to allow selection by rotating the cartridge to permit the cartridge bottom to be guided by the front section and at the same time tilted forwardly at its top end thus extending out of the rack.

Abstract: A container for growing anaerobic microorganisms having a cone-shaped dish and matching cone-shaped cover that define between them a prescribed volume. An overflow trough surrounds the dish, and the peripheries of the dish and cover seal together by excess agar medium carrying the organisms squeezed from the volume as the cover is applied to the dish. The colonies of organisms can be viewed either through the dish or cover because each is transparent.

Abstract: A ribbon cartridge is detachably connectable to a high speed band printer. The cartridge includes a body which has a ribbon storage compartment where the ribbon is contained in a multiplicity of serpentine folds. The body has a ribbon inlet end and outlet end, and guide arms extend from the inlet and outlet ends to guide the endless ribbon to define an exposed loop of the ribbon between the outermost ends of the guide arms. The exposed loop is positioned in the printer adjacent the paper to enable the ribbon to be impacted by appropriate printing characters. The body includes an opening which receives the ribbon drive rollers of the printer in a manner which engages the ribbon and advances it progressively. Adjacent the inlet end of the body, and in the region of the opening, the device includes a ribbon control assembly which cooperates with the rollers to assure proper threading of the ribbon between the rollers as well as to minimize any tendency for the ribbon to jam in the machine or in the cartridge.

Abstract: A radioimmunoassay plate composed of a tray and a cover. The tray has a plurality of wells having downwardly tapered side walls and coplanar bottom walls. Each bottom wall has a flat central portion and rounded peripheral portion, the peripheral portion merging into the side wall.