Adapter bracket

Claim 2

In an adapter bracket for securing an elongated horizontally disposed support member to an upstanding riser having a horizontal plate portion at the upper end thereof, said plate portion having a plurality of openings extending through, comprising: said bracket including a base portion having a plurality of openings formed therein, and top and bottom sides; said bracket including a base portion having a plurality of openings formed therein, and top and bottom sides; said base portion having a channel means positioned at its bottom side adapted to slidably receive at least a pair of bolt members therein so that said bolt members extend downwardly therefrom to permit said bolt members to extend downwardly through said openings in said plate portion; and said bracket adapted to have said support member mounted thereon by bolt members extending through said openings in said base portion and being operatively secured to said support member. Wherein said support means includes a top portion having front and rear wall portions extending downwardly therefrom, first and second horizontal portions extending inwardly from the lower ends of said front and rear wall portions respectively, and an upstanding lip extending upwardly from the inner end of each of said first and second horizontal portion, each of said bolt members having a clamp means mounted thereon above said base portion, each of said clamp means having a channel means extending over the lip adjacent thereto to maintain said plank on said bracket.

Claim 3

The bracket of claim 1 wherein each of said bolt members has a lock nut threadably mounted thereon, said channel means preventing rotation of said lock nut when said bolt member is threadably moved with respect thereto.

Claim 4

In an adapter bracket for securing an elongated horizontally disposed support member to an upstanding riser having a horizontal plate portion at the upper end thereof, said plate portion having a plurality of openings extending through, comprising: said bracket including a base portion having a plurality of openings formed therein, and top and bottom sides; said base portion having a channel means positioned at its bottom side adapted to slidably receive at least a pair of bolt members therein so that said bolt members extend downwardly therefrom to permit said bolt members to extend downwardly through said openings in said plate portion; said bracket adapted to have said support member mounted thereon by bolt members extending through said openings in said base portion and being operatively secured to said support member; and wherein said support member includes a top portion having front and rear walls, portions extending downwardly therefrom, a first horizontal portion extending rearwardly from the lower end of said front wall portion, a first lip portion extending upwardly from the rearward end of said first horizontal portion, a second horizontal portion extending forwardly from the lower end of said rear wall portion, a second lip portion extending upwardly from the forward end of said second horizontal portion, each of said bolt members extending upwardly through said base portion having a clamp means mounted thereon, each of said clamp means including a base portion through which said bolt member extends, and an inverted U-shaped channel means at one side of said base portion, said channel means extending over one of said lip portions, said bolt member having a nut means threadably mounted thereon.

Claim 5

In an adapter bracket for securing an elongated horizontally disposed support member to an upstanding riser having a horizontal plate portion at the upper end thereof, said plate portion having a plurality of openings extending through, comprising: said bracket including a base portion having a plurality of openings formed therein, and top and bottom sides; said base portion having a channel means positioned at its bottom side adapted to slidably receive at least a pair of bolt members therein so that said bolt members extend downwardly therefrom to permit said bolt members to extend downwardly through said openings in said plate portion; said bracket adapted to have said support member mounted thereon by bolt members extending through said openings in said base portion and being operatively secured to said support member; and wherein said support member includes a top portion having front and rear walls, portions extending downwardly therefrom, a first horizontal portion extending rearwardly from the lower end of said front wall portion, a first lip portion extending upwardly from the rearward end of said first horizontal portion, a second horizontal portion extending forwardly from the lower end of said rear wall portion, a second lip portion extending upwardly from the forward end of said second horizontal portion, each of said bolt members extending upwardly through said base portion having a clamp means mounted thereon, each of said clamp means including a base portion through which said bolt member extends, and an inverted U-shaped channel means at one side of said base portion, said channel means extending over one of said lip portions, said bolt member having a nut means threadably mounted thereon.

Claim 6

The bracket of claim 3 wherein said inverted U-shaped channel means includes spaced apart wall members defining an opening therebetween, said opening having a width greater than the thickness of said lip portion, one of said wall members having a lower end engaging said horizontal portion.

Claim 7

In combination, at least a pair of spaced apart, upstanding risers having horizontally disposed plate portions secured to the upper ends thereof, an adapter bracket detachably mounted on each of said plate portions, and a metal support member secured to and extending between said adapter brackets, each of said plate portions having at least first and second bolt openings formed therein, said support member having vertically spaced, inwardly extending flanges each of said adapter brackets including a base portion having a plurality of openings and means associated with openings for engaging the flanges and securing said support member thereto, each of said brackets including a channel means extending downwardly therefrom which is supported by said plate portions, and at least a pair of bolts mounted in said channel means and extending through said plate portion.

Claim 8

In combination, at least a pair of spaced apart, upstanding risers having horizontally disposed plate portions secured to the upper ends thereof, an adapter bracket detachably mounted on each of said plate portions, and a metal support member secured to and extending between said adapter brackets, each of said plate portions having at least first and second bolt openings formed therein, said support member having vertically spaced, inwardly extending flanges each of said adapter brackets including a base portion having a plurality of openings and means associated with openings for engaging the flanges and securing said support member thereto, each of said brackets including a channel means extending downwardly therefrom which is supported by said plate portions, and at least a pair of bolts mounted in said channel means and extending through said plate portion.

Claim 9

The bracket of claim 11 wherein said base portion has a width sufficient to support abutting end portions of a pair of support members.

Claim 10

The bracket of claim 5 wherein said channel means includes a pair of spaced apart vertical walls extending downwardly from the bottom side of said base portion, said walls having horizontal portions extending inwardly towards each other from the lower ends thereof, the inner ends of said horizontal portions being spaced apart a sufficient distance to permit the threaded portion of the bolt members to extend downwardly therebetween, said distance between said horizontal portions being less than the diameter of the head portion of said bolt members.

Claim 11

The bracket of claim 7 wherein said base portion has an elongated ridge portion at its bottom side which extends downwardly therefrom between said walls, said ridge portion adapted to extend into a slot formed in said bolt member to prevent rotation of said bolt members.

Claim 12

The bracket of claim 8 wherein said bracket is of extruded aluminum construction.

Claim 13

The bracket of claim 7 wherein said bracket is selectively slidably secured to said horizontal plate portion.

Claim 14

The bracket of claim 7 wherein said base portion is substantially rectangular in shape and has openings formed in its corner areas, said base portion having an area greater than the area of said horizontal plate portion, said horizontal portions of said channel means adapted to engage the upper surface of said plate portion.

Claim 15

The combination of claim 5 wherein said bolts in said channel means are selectively slidably mounted therein to permit said bolts to register with the openings in said plate portion.

Claim 16

The bracket of of claim 5 wherein said bracket and said support member are of extruded aluminum construction.

Claim 17

The structure of claim 5 wherein lock means is provided in each of said channel means engaging said bolts to limit rotation of said bolts.

Claim 18

The structure of claim 14 wherein said base portion has an elongated ridge portion at its bottom side which extends downwardly, said ridge portion being received in a slot formed in said bolt members to prevent rotation of said bolt members.