초록 ▼

A preferred drainage system grate assembly (10) broadly comprises a grate (12), a frame (14) to support the grate (12), and a locking device (34) to hold the grate (12) within the frame (14). The grate (12) comprises two or more crossbars (16) and a plurality of tread bars (18). Each crossbar (16) s

A preferred drainage system grate assembly (10) broadly comprises a grate (12), a frame (14) to support the grate (12), and a locking device (34) to hold the grate (12) within the frame (14). The grate (12) comprises two or more crossbars (16) and a plurality of tread bars (18). Each crossbar (16) spans a watercourse (20) of a drainage system (21) and is supported by the frame (14) at both ends. The crossbar (16) includes an integral flange (56) that protrudes from the crossbar (16) substantially horizontally and at least one hole (60) centered within the flange (56). The locking device (34) includes a penetration (46) where a bolt (36) is inserted through the hole (60). As the bolt (36) is turned, the locking device (34) is raised until it contacts the frame (14), thereby securing the grate (12) within the frame (14).

대표청구항 ▼

1. A drainage system grate assembly for covering a watercourse of a drainage system, the drainage system assembly comprising:a frame set within the watercourse; a grate set within the frame and including?at least one crossbar having a length, a width, and opposing ends, wherein the crossbar spans th

1. A drainage system grate assembly for covering a watercourse of a drainage system, the drainage system assembly comprising:a frame set within the watercourse; a grate set within the frame and including?at least one crossbar having a length, a width, and opposing ends, wherein the crossbar spans the watercourse alone the crossbar's length, and further wherein the crossbar is operable to be secured to the frame at each general end of the crossbar, a plurality of channels cut into each crossbar, thereby defining a plurality upstanding members located along the length of each crossbar, and a plurality of tread bars positioned between each upstanding member, such that the tread bars are supported by and positioned on top of the at least one crossbar; and at least one locking element, each of which is structurally separate from the frame and grate and of a rigid construction, such that each locking element is operable to interface with the frame so as to secure each crossbar to the frame. 2. The drainage system grate assembly as et forth in claim 1, wherein the frame includes a horizontal ledge protruding towards the opposing side of the frame.3. The drainage system grate assembly as et forth in claim 2, wherein the frame includes a shelf extending downwardly from each horizontal ledge.4. The drainage system grate assembly as set forth in claim 1, wherein the locking element comprises a bar having a length approximately a least the same as a length of the at least one crossbar.5. The drainage system grate assembly as set forth in claim 1, wherein each upstanding member of each crossbar includes a flange protruding horizontally from the upstanding member and operable to interface the upstanding members with the locking element, so as to secure the grate to the frame.6. The drainage system grate assembly as set forth in claim 3, the locking element including an upturned, vertical member adapted to interface with and contact the downwardly extending shelf of the frame so as to secure the crossbar to the frame.7. The drainage system grate assembly as set forth in claim 1, wherein the grate is a first grate and the drainage system grate assembly further comprises a second grate positioned adjacent the first grate.8. The drainage system grate assembly as set forth in claim 1, wherein in a first orientation, a length of the at least one crossbar is generally perpendicular to the opposing sides of the frame, and in a second orientation, the length of the at least one crossbar is generally parallel to the opposing sides of the frame.9. The drainage system grate assembly as set forth in claim 1, wherein the locking element is a first locking element and further including a second locking element, such that the first and second locking elements secure opposing ends of the crossbar to the frame.10. The drainage system grate assembly as set forth in claim 1, wherein the locking element must be manually actuated for engagement of the locking element wit the frame so as to secure the grate within the frame.11. The drainage system grate assembly as set forth in claim 1, wherein the locking element is raised along a generally vertical axis, so as to engage the locking element in securing relationship with the frame.12. The drainage system grate assembly as set forth in claim 1, wherein the upstanding members positioned on the crossbar do not extend substantially beyond the width of the crossbar.13. The drainage system grate assembly as set forth in claim 1, wherein a top of the tread bars positioned on and supported by the crossbars is generally flush with opposing shoulders of the watercourse.