US Patent 12060856 Canister

A canister is provided. The canister includes an inflow port, adsorbents, an atmosphere port, an outflow port, and an adjustment member. The adjustment member includes rod-like members. The adjustment member includes a positioning member configured to enable positioning of the adjustment member in a target chamber by being insertable in a second cylinder and by not being insertable in a first cylinder. The second cylinder has a cylindrical shape, the cross sectional area of which is larger than a cross sectional area of the first cylinder.