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A frame insert for raising the level of a drainage grate cover with respect to a catch basin frame. The frame insert includes a lug for providing a locking surface for a lock device connected to the grate cover. The lug permits a pre-existing lock which locked the grate cover to the catch basin fram

A frame insert for raising the level of a drainage grate cover with respect to a catch basin frame. The frame insert includes a lug for providing a locking surface for a lock device connected to the grate cover. The lug permits a pre-existing lock which locked the grate cover to the catch basin frame to be used to lock the grate cover to the frame insert. The lock engages the frame insert lug at a new lock position which is approximately ninety degrees from the position where it locked the grate cover to the frame before installation of the insert.

대표청구항 ▼

A frame insert for raising the level of a drainage grate cover with respect to a catch basin frame comprising: a top surface for engaging and supporting a drainage rate cover; a bottom surface for engaging a top surface of a rim of the catch basin frame, the rim having an angled surface below the to

A frame insert for raising the level of a drainage grate cover with respect to a catch basin frame comprising: a top surface for engaging and supporting a drainage rate cover; a bottom surface for engaging a top surface of a rim of the catch basin frame, the rim having an angled surface below the top surface of the rim; an inner wall located between said top and bottom surfaces defining a drainage opening; and a lug projecting from said inner wall into said drainage opening, said lug having a planar lower surface extending at an angle that is approximately the same as an angle that the angled surface extends with respect to the top surface of the rim, said lug being adapted to have its lower surface engaged by a lock connected to the grate cover.