Accession Number : ADD008846

Title :   Personnel Chain Climber.

Descriptive Note : Patent,


Personal Author(s) : Skaalen,Clifford I

Report Date : 07 Jul 1981

Pagination or Media Count : 9

Abstract : Apparatus for use as a chain climbing device or a chain racheting device includes a pair of spring-closed opposing cams disposed in a rigid structure which supports a pair of cam pins, each of which extends through an elongated aperture in one of the cams. The weight of a person using the chain climbing device is transferred from a pair of cam stops attached to the rigid structure to the cams to the chain. When the device is used for chain racheting the weight of the chain is transferred to the cams to the cam stops to the rigid structure. The shape of the cams and the elongated apertures enable the cams to rotate about and slide upward or downward on the cam pins to selectively allow upward or downward relative motion between the chain and the apparatus or lock the chain and the apparatus in a fixed relationship. (Author)

Descriptors :   *Patents, *Climbing, Manportable equipment, Chains, Mechanical components, Cams, Pins, Construction equipment

Subject Categories : Machinery and Tools
      Structural Engineering and Building Technology

Distribution Statement : APPROVED FOR PUBLIC RELEASE