A tray arrangeable and engageable with an identical tray in partially overlapping relation with a portion of the bottom of the underlying tray exposed which includes a bottom having notch means formed on the undersurface thereof and spaced from one end thereof together with upstanding lug means formed on the top surface of the bottom at the opposite end thereof for engagement with the notch means on the bottom of a tray placed partially on the top of the tray.

A tray for holding an array of containers such as plant pots has alternating projections and recesses or gaps defining a pair of opposed walls so that alternate rows of the containers are relatively staggered to give a quincunx pattern. Preferably said sides have a zig-zag shape in plan view dimensioned so like trays will interlock.

A tray comprising upstanding side and end walls and a gridwork bottom disposed between the lower edge portions of said walls. Each of said walls preferably comprises an essentially vertical lower section and an outwardly sloping upper section. Said gridwork bottom comprises a plurality of intersecting struts which form rows of rectangles generally parallel with said walls. Reinforcing strut members are provided in intersecting centrally disposed rows of said rectangles. A transverse strut member...

The tray valve for a tray column includes an opening in a tray for a vapor passage and a valve body that is made to match the tray opening. The valve body consists of a top plate and vertically downwardly directed guide limbs arranged at the edge of the plate. The guide limbs have barbs for the anchoring of the valve body in the opening. The material and shape of the valve body are selected so that upon insertion of the valve body into the tray opening the top plate deforms in an arched manner w...

A tray in tray container of corrugated board material is formed from a pair of pre-formed flat body blanks in a bi-level machine having vertically aligned upper and lower dies in which a mandrel reciprocates vertically. The inner body blanks and outer body blanks are stacked in feed hoppers adjacent the upper and lower dies, respectively, and individually stripped out of their respective hoppers into horizontally disposed positions over their respective dies, substantially simultaneously. The fe...

A tray opening mechanism and an improved tray are disclosed in this application. The opening mechanism consists of a pair of blades that are supported for both pivotal movement about a fixed shaft and rotational movement about axes perpendicular to the shaft. The trays are removed from a stack and inserted onto the blades while the blades are in a raised position and the blades are automatically rotated 180.degree. in one direction and then rotated 90.degree. in the opposite direction to initial...

A decorative tray or tray cover is formed from a scored paperboard blank having main, side and end panels and base flaps arranged for simultaneous manipulation with an unscored paper blank having a decorative outer surface and being disposed in coincidence with the paperboard blank and with its inner surface in face contacting relation therewith to provide tray or tray cover which is attractive in appearance and which requires no adhesive of any kind.

A tray, used for transferring a substrate and conducting a coating process, includes a recessed portion to accommodate a substrate, the depth of the recessed portion being substantially the same as the thickness of the substrate, and a one-step-lower gutter which is provided on an outer periphery of said recessed portion or inside the outer periphery of said recessed portion. The tray may further comprise a plurality of attracting grooves which are provided concentrically in a surface of said re...

An equipment tray of sheet metal having a base with a bottom section and a set of four sides integral to the bottom section with each of the four sides extending outward from the base to form a compartment therein and at least one of the sides having a beveled lip extending along a first portion of the side to provide stiffness to the base to avoid the "oil can effect" occurring with sheet metal trays. A further feature of the inventions is the inclusion of a cover retaining slot formed in the b...

A tray lid for covering a food tray having at least one food pocket therein. The tray lid includes a substantially flat tray covering section including a wall covering portion and at least one pocket covering portion formed thereon. The tray lid can include at least one pocket covering portion having a peripheral channel configured to abut against an associated wall of a food pocket of the food tray to seal food within the at least one food pocket.