A packaging box for a roll-shaped material wound around a cylindrical core, including a prism-shaped case body, and respective side surface portions at both ends in a longitudinal direction of the prism-shaped case body, the prism-shaped case body and the side surface portions being formed of a single sheet member, that includes a holding unit inserted into the cylindrical core of the roll-shaped material to hold the roll-shaped material within the prism-shaped case body, wherein, when the holding unit is inserted into the cylindrical core of the roll-shaped material, a region facing an end portion of the cylindrical core in a cross direction intersecting the longitudinal direction in which the prism-shaped case body extends, is formed with a recessed portion that is recessed in the cross direction.

A packaging box for a roll-shaped material wound around a cylindrical core, including a prism-shaped case body, and respective side surface portions at both ends in a longitudinal direction of the prism-shaped case body, the prism-shaped case body and the side surface portions being formed of a single sheet member, that includes a holding unit inserted into the cylindrical core of the roll-shaped material to hold the roll-shaped material within the prism-shaped case body, wherein, when the holding unit is inserted into the cylindrical core of the roll-shaped material, a region facing an end portion of the cylindrical core in a cross direction intersecting the longitudinal direction in which the prism-shaped case body extends, is formed with a recessed portion that is recessed in the cross direction.

Disclosed embodiments relate to devices and methods for storage and/or transport of tubular structures, such as perforating guns for use in wellbores. Some embodiments relate to modular storage containers, for example which may be height adjustable depending on the length of the tubular structure to be held therein. Some embodiments relate to mobile storage banks, which may be configured for use with the modular storage containers. In some embodiments, the storage bank may further be configured with one or more longitudinal compartments configured to hold used tool strings or portions thereof.

Disclosed embodiments relate to devices and methods for storage and/or transport of tubular structures, such as perforating guns for use in wellbores. Some embodiments relate to modular storage containers, for example which may be height adjustable depending on the length of the tubular structure to be held therein. Some embodiments relate to mobile storage banks, which may be configured for use with the modular storage containers. In some embodiments, the storage bank may further be configured with one or more longitudinal compartments configured to hold used tool strings or portions thereof.

A poster tube closure includes a plug member for locating within an end of a poster tube. The plug member has a substantially planar closure surface with upper and lower faces, wherein a perimeter wall extends downwardly from the lower face for gripping the wall of a poster tube when inserted. The upper face has a frangible or weakened area arranged in use to be broken by user action to permit removal of the plug member and a visible indication of the breakage.

A wax ring tray configured to store a wax ring therein includes a base, a first flexible member and a second flexible member. The first and second flexible members are positioned radially outward from a center of the base, and extend from the base to respective first and second ends. The first flexible member and the second flexible member are configured to transition between respective first positions and second positions. In the first position of the first flexible member, the first end of the first flexible member is positioned radially outward relative to the first end in the second position. In the first position of the second flexible member, a second end of the second flexible member is positioned radially outward relative to the second end of the second flexible member in the second position.

A wax ring tray configured to store a wax ring therein includes a base, a first flexible member and a second flexible member. The first and second flexible members are positioned radially outward from a center of the base, and extend from the base to respective first and second ends. The first flexible member and the second flexible member are configured to transition between respective first positions and second positions. In the first position of the first flexible member, the first end of the first flexible member is positioned radially outward relative to the first end in the second position. In the first position of the second flexible member, a second end of the second flexible member is positioned radially outward relative to the second end of the second flexible member in the second position.

A substrate storing container 1 includes a filter unit 90 having a housing that forms a ventilation path 901 and a filter 95. The housing includes an outer housing portion 94 and an inner housing portion 92 at least partially disposed inside the outer housing portion 94 and fastened to the outer housing portion 94. The inner housing portion 92 has a male thread portion 929 at a part disposed inside the outer housing portion 94. The outer housing portion 94 has a female thread portion 949 that meshes with the male thread portion 929. The inner housing portion 92 has first engagement portions 928 at a part that is disposed inside the outer housing portion 94 and where the male thread portion 929 does not exist. The outer housing portion has second engagement portions 948 that engage with the first engagement portions 928 at a part where the female thread portion 949 does not exist. The first engagement portions 928 and the second engagement portions 948 are configured to be visually identifiable in fastening of the inner housing portion 92 and the outer housing portion 94.

A saw blade holder may include a first guard member which may include a first groove configured to receive a first portion of an edge of a saw blade, a second guard member which may include a second groove configured to receive a second portion of the edge of the saw blade, a hinge that may be configured to couple the first guard member to the second guard member such that the first guard member may rotate relative to the second guard member to transition the saw blade holder between an open position and a closed position, and a locking member that may be affixed to one of the first guard member or the second guard member, the locking member may be configured to move into a locked position to secure the first guard member to the second guard member when the saw blade holder is in the closed position.

A wax ring tray configured to store a wax ring therein includes a base, a first flexible member and a second flexible member. The first and second flexible members are positioned radially outward from a center of the base, and extend from the base to respective first and second ends. The first flexible member and the second flexible member are configured to transition between respective first positions and second positions. In the first position of the first flexible member, the first end of the first flexible member is positioned radially outward relative to the first end in the second position. In the first position of the second flexible member, a second end of the second flexible member is positioned radially outward relative to the second end of the second flexible member in the second position.