Abstract: A load lifting hook assembly includes a body, a hook coupled to the body, a fluid connection on the body and connectable to a pressurized fluid source, a piston and a pressure relief valve. The piston is extendable from the body to engage the hook and lock the hook in a closed position relative to the body. The piston is configured to receive pressurized fluid from the fluid connection tending to urge the piston out of engagement with the hook. The pressure relief valve is positioned in the body in communication with the fluid connection and configured to prevent excess pressure in the pressurized fluid from acting on the piston.

Abstract: A load lifting hook assembly includes a body, a hook coupled to the body, a fluid connection on the body and connectable to a pressurized fluid source, a piston and a pressure relief valve. The piston is extendable from the body to engage the hook and lock the hook in a closed position relative to the body. The piston is configured to receive pressurized fluid from the fluid connection tending to urge the piston out of engagement with the hook. The pressure relief valve is positioned in the body in communication with the fluid connection and configured to prevent excess pressure in the pressurized fluid from acting on the piston.

Abstract: A dual mode strapper for strapping an article is illustrated with a strap-forming mechanism capable of selectively operating in a first mode to pre-form an endless pre-formed strap of a predetermined length at least slightly greater than an initial perimeter of the article to be strapped, and in a second mode to apply strapping material directly to the article to be strapped and thereafter form the strapping material into an endless directly applied strap around the article. The strap-forming mechanism defines an opening in which the article is received. The dual mode strapper may also include a pre-formed strap holding area adjacent the strap-forming mechanism that extends at least partially around the opening.

Abstract: A dual mode strapper for strapping an article with a strap-forming mechanism is capable of selectively operating in a first mode to pre-form an endless pre-formed strap of a predetermined length at least slightly greater than an initial perimeter of the article to be strapped, and in a second mode to apply strapping material directly to the article to be strapped and thereafter form the strapping material into an endless directly applied strap around the article. The strapper may also include a pre-formed strap holding area adjacent the strap-forming mechanism that extends at least partially around an opening in which the article is received. When the strapper is operating in the first mode, the pre-formed strap holding area receives the pre-formed strap and maintains it in spaced-apart relation from the article before dispensing it from the holding area onto the article to be strapped.