Abstract:
The invention relates to a semiautomatic device for securing ropes for top-rope climbing, comprising a framework or housing (2) for mounting the device on a climbing wall (1), preferably in the vicinity of the ground; a rope pulley (3), which is intended for guiding, feeding and deflecting a securing rope (4), is borne on a shaft (5), mounted in a rotatable manner on the framework/in the housing (2), and has a guide groove (6) for the securing rope (4); a self-locking differential band brake (7), of which the braking action on the shaft (5) can be regulated manually by means of an operating lever (8); and a self-locking centrifugal brake (9), of which the braking action on the shaft (5), this braking action being independent of the differential band brake (7), can be triggered automatically in dependence on the rotational speed of the shaft.
Abstract:
Die Erfindung geht aus von einem Verfahren zum Lösen einer Rückhalteeinrichtung für einen Aufsaßen auf einem Fahrzeug, insbesondere einem Zwei- oder Dreiradfahrzeug, wobei die Rückhalteeinrichtung ein Verbindungselement aufweist. Der Aufsäße und das Fahrzeug sind durch das Verbindungselement lösbar miteinander verbunden. Erfindungsgemäß wird in einem ersten Verfahrensschritt ein Neigungswinkel (6) und/oder ein Steigungswinkel (8) des Fahrzeugs ermittelt. In einem zweiten Verfahrensschritt wird je eine Drehrate (13, 14, 16) um eine Fahrzeuglängsachse und/oder eine Fahrzeugquerachse ermittelt. In einem dritten Verfahrensschritt wird jede ermittelte Drehrate (13, 14, 16) mit einer zugehörigen von dem Neigungswinkel (6) und/oder dem Steigungswinkel (8) abhängigen kritischen Drehrate (9, 10, 12) verglichen. In einem vierten Verfahrensschritt wird das Verbindungselement gelöst, wenn die ermittelte Drehrate (13, 14, 16) und die zugehörige kritische Drehrate (9, 10, 12) gleich sind.
Abstract:
A method for the installation of a safety line on a pitched roof of a building for securing a user. Use is made of a guide member for the safety line, comprising a lower end and an upper end. The guide member has a bending stiffness which is larger than that of the safety line. The guide member is installed on the roof, in such a way that the lower end can be reached by hand without having to set foot on the pitched roof, and such that the upper end is located at an elevated level on the pitched roof. The safety line is pushed upward by the guide member in order to push an increasingly long part of the safety line out of the upper end of the guide member. That part is guided over the ridge of a pitched roof and subsequently attached to the building by the user.
Abstract:
Method for lowering loads (18) down a rope from a platform, comprising the following steps: lowering a descent rope (22) from the platform, lowering a counterweight (26) down said descent rope in a controlled manner to a lower end position, which counterweight is connected to the descent rope (22) by means of a braking device (28) to limit the lowering speed, and lowering at least one load (18) down said descent rope (22) before the counterweight (26) has reached its lower end position.
Abstract:
A post system for use in fall protection includes a connector to connect to a structure and a support in operative connection with a lifeline to maintain the lifeline at a first height above the structure. When a first threshold force is experienced on the lifeline, the support is operable to lower the lifeline to a second height which is lower than the first height. The ratio of a change in effective length of the lifeline resulting from the lowering of the lifeline to a change in height resulting from lowering of the lifeline (or the L/ H ratio) is less than 1. The ratio of the change in effective length of the lifeline resulting from the lowering of the lifeline to the change in height resulting from lowering of the lifeline may also be less than 0.5 or less than 0.4.
Abstract:
A fall arrest apparatus has a body harness having a backrest and a seat and capable of being worn by a user so that the backrest extends from a rear shoulder region to a rear hip region of the user while the seat extends from about the rear hip region to a rear thigh region of the user. A suspension harness is configured for connection to the body harness at a front shoulder region and at a front thigh region, such mat when the user is suspended from the suspension harness in the body harness, the user is reclined in the body harness with a weight of the user being distributed across the backrest and seat assemblies.
Abstract:
A safety clamp (1, 60) for use in a fall arrest system having a safety rail (104, 105) is disclosed. The safety clamp has a body portion (2) and a plate portion (3) together defining a passage (4, 63) having a longitudinal axis to receive a safety rail extending therethrough such that, in use, the clamp slides along said safety rail in a longitudinal direction. The portions being movable relative to each other between a first position in which the passage is open along its length to enable a safety rail to be inserted into, or removed from, the passage, at any location along the length of the safety rail and a second position in which the safety rail is retained within the passage.
Abstract:
Provision is made for a safety harness with a chest strap (20), an abdominal strap (30) and a damping unit (50) between the chest strap and the abdominal strap (20, 30). The damping unit (50) is designed to limit the maximum force of the safety harness exerted on the wearer in the case of a fall. The damping unit (50) has a connector (51) for connection to an external runner (110).
Abstract:
A safety clamp for use in a fall arrest system having first and second safety rail sections that meet at a junction is disclosed. The safety clamp comprises first and second passages configured to respectively receive the first and second safety rail sections to enable the safety clamp to slide along the safety rail sections and for the safety clamp to switch between receiving the first safety rail section and the second safety rail section as the clamp slides through the junction.