Waste receptacle cam lock with locking projection

In a waste receptacle securable to a support structure, the waste receptacle having a bar secured thereto, the bar having spaced recesses formed in opposite sides thereof at the upper end of said bar, the support structure having a wall bracket mounted thereon, the wall bracket having upper and lower legs projecting therefrom, an opening being formed in the lower leg for removably receiving the lower end of the bar, an opening being formed in the upper leg and including a relatively wide slot portion and a relatively narrow portion, the upper end of the bar being removably receivable within the relatively wide slot portion of the opening in the upper leg, the relatively narrow slot portion of the opening in the upper leg being adapted to receive the upper end of the bar thereinto, the recesses in the upper end of the bar engaging and receiving wall portions of the relatively narrow slot portion of the opening thereinto, spaced support flanges mounted to the wall bracket between said wall bracket and the bar, a locking device mounted on said support flanges and including a cam member mounted for rotation between the support flanges by a key shaft, said key shaft being rotatable to present a first lobe of the cam member against the bar to position and maintain said bar within the relatively narrow slot portion of the opening in the upper leg, the key shaft being further rotatable to present a second lobe of said cam member into opposed relation to the bar to allow the bar to be moved into the relatively wide slot portion of the opening in the upper leg to permit removal of the bar from the openings in the upper and lower legs and thus removal of the waste receptacle from secured relation to the wall bracket and support structure, the improvement comprising:

• a projection formed on the upper surface of the cam member, the cam member being carried on the key shaft for rotation therewith;
• an enlarged flange member formed on the upper end of the key shaft and spaced from the upper surface of the uppermost support flange secured to the wall bracket, the upper surface of the flange member forming a pressure receiving surface;
• and,
• a spring mounted about the key shaft between the upper surface of the uppermost support flange and the lower surface of the enlarged flange member and biasing thereagainst, the spring biasing the projection on the cam member against a side portion of the uppermost support flange when the key shaft and cam member are rotated to present the first lobe of said cam member against the bar, the projection thereby positively locking the bar within the relatively narrow slot portion of the opening in the upper leg, the spring being compressed by pressure exerted against the pressure receiving surface of the enlarged flange member of the key shaft to displace the projection on the cam member downwardly to allow rotation of the key shaft and cam member to present the second lobe of said cam member into opposed relation to the bar to unlock the bar from the wall bracket.