Abstract: A modular drill bit mounts legs within recesses in a body which are parallel to the central axis of the body using threaded studs with tapered outer portions, in conjunction with an attached pin having recesses therein receiving the upper ends of the legs. The lower ends of the legs terminate in spindles of open face configuration rotatably receiving cones thereon for rotation via a arrangement of bushings, roller bearings and thrust bearings, and a plurality of seals which slide and therefore rotate relative to both the leg spindle and the cone with the help of pressure compensating apparatus. Each cone is provided with cutting teeth which are inclined in the direction of cone rotation and which cover the cone surface in a manner which provides scraping of substantially the entire bottom surface of the hole being drilled and in a manner providing efficient scraping and crushing action.

Abstract: A modular drill bit mounts legs within recesses in a body which are parallel to the central axis of the body using threaded studs with tapered outer portions, in conjuction with an attached pin having recesses therein receiving the upper ends of the legs. The lower ends of the legs terminate in spindles of open face configuration rotatably receiving cones thereon for rotation via a arrangement of bushings, roller bearings and thrust bearings, and a plurality of seals which slide and therefore rotate relative to both the leg spindle and the cone with the help of pressure compensating apparatus. A bushing disposed in the cone-leg spindle interface has oil-lubricated rubber rods disposed in apertures therein to prevent lock-up on an adjacent bearing surface. The cone is held on the leg spindle by a lock nut forming one end of a race for receiving rollers of a roller bearing, in conjunction with a ring-nut secured to an extended portion of the cone protecting the leg from wear and damage.

Abstract: A modular drill bit mounts legs within recesses in a body which are parallel to the central axis of the body using threaded studs with tapered outer portions, in conjunction with an attached pin having recesses therein receiving the upper ends of the legs. The lower ends of the legs terminate in spindles of open face configuration rotatably receiving cones thereon for rotation via a arrangement of bushings, roller bearings and thrust bearings, and a plurality of seals which slide and therefore rotate relative to both the leg spindle and the cone with the help of pressure compensating apparatus. A bushing disposed in the cone-leg spindle interface has oil-lubricated rubber rods disposed in apertures therein to prevent lock-up on an adjacent bearing surface. The cone is held in the leg spindle by a lock nut forming one end of a race for receiving rollers of a roller bearing, in conjunction with a ring-nut secured to an extended portion of the cone protecting the leg from wear and damage.

Abstract: Dispensers for nested items such as cups or lids. Dispensers according to the present invention contain face plates which are easily removed so that the dispensers and their surrounding areas can be easily cleaned. One embodiment of dispensers according to the present invention includes a trim assembly and a container assembly for the items to be dispensed, which two assemblies can be attached as a unit to the face plate and removed with the face plate for quick and efficient cleaning and refilling. The face plates and trim assemblies may be color coded for aesthetic purposes and to differentiate various cup and lid sizes.

Abstract: A dispenser to accommodate, store and display cup lids and straws. A base plate and a cabinet plate form the bottom and side surfaces of the dispenser. Support brackets are adjustably fastened to the base plate, and are shaped to impart to the dispenser a face-up attitude so that the cup lids and straws contained in the dispenser rest against the back restraining surface. Divider sections are fastened to one or more spaced openings in the base plate to separate stacks of lids, and may be easily and quickly repositioned to accommodate changes in sizes and assortments of lids. A straw compartment section may also be fastened to the base plate for orderly storage of straws.