A file fastener is provided and consists of a stack of paper sheets, a pair of protective covers, a pair of plates, a pliable hollow tube that passes through holes in the sheets, the covers and the plates and around notched corners in the plates. A short rod secures both ends of the tube together to form a continuous locking band thereof.

There is provided a reinforcing frame for an open-ended container, adapted to receive the forward edges of the container at its open end, having at least three channelled sides forming a continuous frame body, and formed each by two spaced-apart leg members interconnected by a base member and at least one rigid bar disposed between adjacent leg members in close proximity to the base member. The bar would be disposed between the base member and a forward edge of a container received by the channe...

Disclosed is a dental file for use in cleaning out or extirpating root canals, particularly those which are curved, wherein the file which conventionally is provided with cutting or abrading flutes, typically in a spiraled manner, is also provided with a smooth, non-abrading pilot end which rides on the deep inner portion of the root canal wall and prevents the file from straightening out and causing the end thereof to "zip" or slice into the canal wall in an uncontrolled manner.

An expanding file box includes a flat bottom panel and a pair of hollow side walls extending upwardly from each side of the bottom panel. The side walls have front and rear entrance openings leading into the interior thereof. The file box also includes flat front and rear panels connected to the front and rear edges, respectively, of the bottom panel to each pivot between a closed substantially vertical position and an open, outwardly tilted position. With the front and rear panels in open posit...

A storage unit is provided, which is particularly adapted for use as a flat file, comprising a fiberboard housing having a plurality of particle board shelf-supporting panels with recesses that support fiberboard drawer shelves encased at their forward edges by a rigid casing, and further including a rigid peripheral frame for the open end of the housing, and a plurality of drawers preferably having large horizontal dimensions relative their respective heights.

A dental file is disclosed which is particularly useful in endodontia for removing dead or damaged tissue from a curved tooth root canal. The file has a flexible tapered shank which has a cutting surface on its periphery and a pilot projecting from the tapered end of the file for guiding the shank along the curved root canal preventing the cutting surface near the end of the shank from gouging into the wall of the curved root canal or penetrating too far through the apical foramen of the root ca...

A disk file for storing data is disclosed which comprises two major separable assemblies, an HDA assembly and a disk drive assembly. The HDA assembly is characterized by two separate carriage units each of which function to position a plurality of magnetic transducers in transducing relationship with a different group of magnetic disks which are mounted on a common horizontally disposed disk spindle. The disk drive assembly is characterized by an integral baseplate whose front section is general...

A device for storing index or file cards in which one wall of the device is pivotally mounted to the compartment containing the cards is disclosed. In addition, a cover hingedly mounted to the compartment serves to restrict travel of the pivotally mounted wall when the cover is lifted.

The file fastener of this invention consists of a presser member having an elongated cavity, opposed transverse slots at the ends of said cavity and means provided in said elongated cavity and on the opposed outer portions of the male member, which means causes the locking of said outer portions in the cavity when said opposed outer end portions are fitted horizontally and on top of each other within the cavity of the presser member. A cover is slidably fitted on the upper side of the presser me...

A binder made of a rigid covering case and containing an assemblage of envelopes constitutes a diskette file. The diskette file provides a secure receptacle suitable for storage of 10, 20, or any number of magnetic diskettes used on microcomputers. When the binder is open, an accordion-like assemblage of envelopes structure expands to form a fan of the diskettes stored in the envelopes. The top of each diskette in the fan of the open binder is revealed and a single diskette can be located and re...