Fixture for attaching a grate to a drainage channel

Details Fixture for attaching a grate to a drainage channel Fixture for attaching a grate to a drainage channel

1995-03-22

1996-10-15

Graysay, Tamara L.

Hydraulic and earth engineering

Fluid control, treatment, or containment

Flow control

404 2, 411349, 411549, 411553, E02B 508, F16B 2100

Patent

active

055648606

ABSTRACT:
A grate attachment fixture is disclosed which rotationally engages a locking bar with the opposed sidewalls of a drainage channel and which thereafter secures a grate to the drainage channel. The grate attachment fixture includes a rotatable connector adapted to adjustably interconnect the locking bar and the grate. The grate attachment fixture also includes a grate securing member affixed to the locking bar. The grate securing member includes a pair of adjustment surfaces including a positive engagement surface for engaging a portion of the connector such that upon rotation of the connector in a first angular direction, the locking bar initially rotates within the trench in the first angular direction until the first locking bar engages the opposed sidewalls. Thereafter, the positive engagement surface cooperates with the connector to apply a tensile force between the grate and the locking bar upon further rotation of the connector. The adjustment surfaces also include a latching surface, adjoining the positive engagement surface, adapted to maintain the connector in a tensioned state between the grate and the locking bar. Thus, the grate will remain securely attached to the drainage channel during use in which a variety of forces and loads are applied thereto.

REFERENCES:
patent: Re33439 (1990-11-01), Thomann et al.
patent: 2406007 (1943-10-01), Eisele
patent: 2492114 (1944-11-01), Crowther
patent: 2714754 (1952-05-01), Knohl
patent: 3407454 (1968-10-01), Myatt

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