A system assists a user to traverse a structure. A safety device includes a sensor assembly to detect positions of a user along a travel path for a structure, wherein the travel path includes a plurality of attachment points to secure the user to the structure via one or more lines, a motion assembly to move the safety device along the travel path based on the detected positions of the user, wherein the motion assembly maintains a threshold distance from the user, and a coupling mechanism to couple the one or more lines to one or more of the attachment points encountered along the travel path. Embodiments of the present invention further include a method and program product for assisting a user to traverse a structure in substantially the same manner described above.

A system assists a user to traverse a structure. A safety device includes a sensor assembly to detect positions of a user along a travel path for a structure, wherein the travel path includes a plurality of attachment points to secure the user to the structure via one or more lines, a motion assembly to move the safety device along the travel path based on the detected positions of the user, wherein the motion assembly maintains a threshold distance from the user, and a coupling mechanism to couple the one or more lines to one or more of the attachment points encountered along the travel path. Embodiments of the present invention further include a method and program product for assisting a user to traverse a structure in substantially the same manner described above.

Knee ascenders comprising modular replaceable components are disclosed. The elastic piece that provides pulling force to move the ascender upwards is not secured to any of the other components of the knee ascender, making replacing the elastic piece that is subject to frequent wear and tear convenient. Additionally, the length of the load bearing member, the elastic piece, as well as the guiding piece of the elastic bearing member is adjustable, making the knee ascender disclosed herein suites climber's many different needs.

Knee ascenders comprising modular replaceable components are disclosed. The elastic piece that provides pulling force to move the ascender upwards is not secured to any of the other components of the knee ascender, making replacing the elastic piece that is subject to frequent wear and tear convenient. Additionally, the length of the load bearing member, the elastic piece, as well as the guiding piece of the elastic bearing member is adjustable, making the knee ascender disclosed herein suites climber's many different needs.

A device, method and system improve the breathable air quality of the environment in the region of a specific part of a body, such as around the mouth and nose area of a person buried in an avalanche. The device includes at least one inlet, at least one pump, at least one power resource, a controller, and at least one outlet. An inlet of the pump is constructed to act as a chamber. A first end of the chamber is connected to the inlet and a second end of the chamber is an opening towards the outside of the device. When the pump is activated, the pump will provide a vacuum in the chamber and suck air from the surroundings into the pump through the second end of the chamber and the chamber.

One embodiment relates to an improved camming stem system including a head member, a plurality of cam lobes, a connection system, and a retraction system. The cam lobes may be selectively rotatable between an extended state and a retracted state with respect to at least one axle of the head member. The connection system may create an elongated, substantially rigid region by intercoupling the head member with a loop. The retraction system is configured to selectively engage the retracted state with a trigger assembly which is slidably externally coupled to the connection system. The trigger assembly further includes a coupling member coupled with the plurality of cam lobes via a plurality of retractor wires, at least one trigger cable fixably coupled to the coupling member, a trigger coupled to the at least one trigger cable, a sleeve member intercoupled between the coupling member and the trigger.

Disclosed herein is a device for protecting a climbing rope comprising a flexible sheath comprising a first edge, a second edge generally opposing the first edge, a first end, and a second end generally opposing the first end, a sheath connector assembly attached at the second end of the flexible sheath, and a primary rope connector assembly attached to the sheath connector assembly. Methods of making and using the device also are described.

The present disclosure provides danger avoidance apparatuses and related methods, such as for use to avoid avalanches. An apparatus may include a container configured to couple to a user, a lift providing mechanism, a descent control mechanism and at least one rip cord engaged with the container and selectively operable by the user. Both the lift providing mechanism and the descent control mechanism may be movably coupled to the container between a packed position within the container and a deployed position exterior to the container controlled via the at least one rip cord. The lift providing mechanism may include an airfoil that provides lift to the user at a first velocity of the user along a first direction. The descent control mechanism may control the descent and reduce the velocity of the user along the first direction from the first velocity in the deployed position.

The carabiner comprises a body associated with a gate able to rotate on a first end of the body between a closed position and an open position of the carabiner. A confinement element is configured to form a first stop and a second stop salient from the body. The confinement element is fitted removable with respect to the body. The confinement element is fixed to the body by a first fastener and a second fastener. A joining part connects the first fastener to the second fastener to define the space separating the first stop and the second stop. The joining part is pressed against the body. The body, the gate and the joining part define a carabiner with a single central ring.

The carabiner comprises a body associated with a gate able to rotate on a first end of the body between a closed position and an open position of the carabiner. A confinement element is configured to form a first stop and a second stop salient from the body. The confinement element is fitted removable with respect to the body. The confinement element is fixed to the body by a first fastener and a second fastener. A joining part connects the first fastener to the second fastener to define the space separating the first stop and the second stop. The joining part is pressed against the body. The body, the gate and the joining part define a carabiner with a single central ring.