Grate

Claim 2

A grate, particularly for covering open channels and the like, comprising a row of elongated at least substantially parallel bars each having spaced opposite ends; and at least two elongated spacing and connecting strips of elastically yieldable material extending along said row and each connecting said bars in the region of one of said ends, said strips each having a first side and a second side opposite said first side and undercut recesses provided in said first side, each of said recesses accommodating a complementary portion of one of said bars, said undercut recesses and said complementary portions preventing withdrawal of said bars from said recesses in directions other than lengthwise of the respective bars said bars being flush with said first side of said strips, and said second side of each of said strips being provided with slits extending in direction towards said first side.

Claim 3

A grate as defined in claim 1, wherein said recesses and at least said portions of said bars are of complementary non-circular cross-sectional configuration, whereby to prevent rotation of said bars with respect to said strips.

Claim 4

A grate as defined in claim 1, wherein said strips are at least predominantly composed of a material selected from the group comprising natural and synthetic rubbers, and synthetic resin materials.

Claim 5

A grate as defined in claim 1, said strips having a predetermined thickness between said first and said second side; and wherein said slits have a depth corresponding to substantially 80 percent of said thickness.

Claim 6

A grate as defined in claim 1, said slits having inner ends closer to said first side and each slit having a widened inner end portion.

Claim 7

A grate as defined in claim 5, wherein said widened inner end portions have a cross-sectional configuration resembling a cylinder whose axis extends transversely to the elongation of the respective slits.

Claim 8

A grate as defined in claim 1, wherein said bars are hollow profiled bar members.

Claim 9

A grate as defined in claim 1, said bars having a predetermined maximum dimension in direction lengthwise of said strip, and consecutive ones of said recesses being spaced by a distance corresponding at least substantially to twice said maximum dimension.

Claim 10

A grate as defined in claim 1, wherein said recesses and said bars are of complementary cross-sectional configuration.

Claim 11

A grate, particularly for covering open channels and the like, comprising a row of elongated at least substantially parallel bars each having spaced opposite ends; and at least two elongated spacing and connecting strips of elastically yieldable material extending along said row and each connecting said bars in the region of one of said ends, said strips each having a first side and a second side opposite said first side and undercut recesses provided in said first side, each of said recesses accommodating a portion of one of said bars, and said recesses and at least said portions of said bars being of complementary cross-sectional configuration, said recesses and said undercut complementary portions preventing withdrawal of said bars from said recesses in directions other than lengthwise of the respective bars, and said second side of each of said strips being provided with slits extending in direction towards said first side, and wherein said cross-sectional configuration is substantially trapezoidal with the narrower End of the trapezium being closer to said second side, and wherein said bars are provided with lateral projections located at and wider than said narrower end of their respective cross-section and said recesses are provided with complementary lateral cut-outs located at the narrower end of their respective cross-section and accommodating said projections.

Claim 12

A grate, particularly for covering open channels and the like, comprising a row of elongated at least substantially parallel bars each having spaced opposite ends; and at least two elongated spacing and connecting strips of elastically yieldable material extending along said row and each connecting said bars in the region of one of said ends, said strips each having a first side and a second side opposite said first side and undercut recesses provided in said first side, each of said recesses accommodating a portion of one of said bars, and said recesses and at least said portions of said bars being of complementary cross-sectional configuration, said recesses and said undercut complementary portions preventing withdrawal of said bars from said recesses in directions other than lengthwise of the respective bars, and said second side of each of said strips being provided with slits extending in direction towards said first side, and wherein said cross-sectional configuration is substantially trapezoidal with the narrower End of the trapezium being closer to said second side, and wherein said bars are provided with lateral projections located at and wider than said narrower end of their respective cross-section and said recesses are provided with complementary lateral cut-outs located at the narrower end of their respective cross-section and accommodating said projections.

Claim 13

A grate as defined in claim 10, wherein the transverse dimension of said bars at said narrower end of their cross-section plus said lateral projections at said narrower end at least substantially equals the transverse dimension of said bars at the wider end of their respective cross-section.