Abstract: A rehabilitated manhole cover and method of producing the same. To rehabilitate the manhole cover for a sanitary sewer system, a removable plug is inserted in one of the vent holes in the cover, while a permanent seal is applied to the remaining vent holes. A pneumatic gasket is installed with an adhesive on the annular ledge in the manhole casting and the cover when installed rests on the ledge and compresses the gasket to provide a seal between the cover and the casting. To properly center the cover, holes are drilled in the peripheral edge of the cover and metal rivets installed within the holes. Each rivet is provided with an enlarged head which projects outwardly from the cover and can be spaced from the peripheral edge of the cover by shims or spacers to thereby maintain the peripheral edge of the cover is close proximity to the manhole casting. By removing the removable plug the cover can be removed from the manhole in a conventional manner by using a pick.

Abstract: A carrying handle assembly for a diving tank including a pair of straps that encircle the tank. A handle extends longitudinally of the tank and is removably connected to the straps. The handle comprises a rigid tubular core having a dog-leg shape, with the rear portion of the core extending at an angle of about 30.degree. with respect to the forward portion. Bonded to the outer surface of the core is a resilient foam plastic covering and a flexible strap is inserted through the central opening in the core and the ends of the strap are removably attached to the straps that encircle the tank. In use, the operator grasps the forward portion of the handle which is held generally horizontally and the tank will be inclined upwardly and forwardly at an angle of about 30.degree..