The invention concerns a system making it possible for the common man to experience ski jumping, without the necessity of possessing special- skills and training needed for performing professional ski jumping in a safe manner. ("Professional ski jumping" is in this context defined as the sport where a person using skis is sliding down a man made hill by the force of gravity on a surface covered by snow and then jumping out of an edge aiming to touch ground as far as possible from said edge).

The invention can be used year around, which means that there is no need for snow or ice for making it work. The invention can be used by any person in normal health also including professional ski jumpers, who can benefit of practice ski jumping off season in a safe manner.

Suitable locations for establishing the invention are amusement parks, but also locations in close proximity to normal ski jumping facilities where off season training of professional ski jumpers can be managed.

The invention consists of a wire system wherein the main components are a drive tower (11), a slave tower (12) and a wire carriage (1) whereto the ski jumper is attached in a harness (9). The system should be located in a slope (natural or manmade), since it is essential for making the ski jump realistic. The slope surface itself shall be made of a low friction material, wherein tracks for the skis are moulded. The skis used can be of ordinary bottom glide type or be equipped with a roller mechanism.

The person who is about to use the invention will be attached to a safety harness (9), which has three attachment points (for upper- and lower back) and for a safety line (13). The harness (9) is connected to two lifting wires (8), which are regulated independently by two electro mechanical AC-units (5). Each AC-unit consists of an electrical step motor, which has a built-in actuator. Each AC-unit transmits its movement/steps to a reel (7) via a drive belt (6). Weight sensors are located in the AC-units, which means that the tension in the lifting wires will be regulated by the ECM (4) via the AC-units. The tension is a function of input parameters, such as ski jumper body weight and desired speed.

The wire carriage assembly is a confined box and contains all necessary equipment for a safe and reliable operation of simulating a ski jump. The wire carriage (1) is using two wires to be movable between the drive tower and the slave tower; a guide wire (3) - which is running through the carriage supported by guiding rolls (not shown) - and a transport wire (10), which is cut in two parts and each part is permanently connected/bolted to the carriage- back and front respectively. The transport wire has no relative velocity compared to the carriage itself. Inside the carriage the electrical AC-units (5) are controlled by a programmable computer (4), ECM, and to obtain a smooth and stable ride without uncomfortable oscillations, a gyro (not shown) can be installed to improve stability. A battery pack (inside the wire carriage, not shown) can either be charged via the power- & communication cables (2) or use the carriage's kinetic energy during movement and convert it to electric energy via a generator (not shown) with a pulley rolling on the guide wire (3). The battery pack must have enough electrical capacity of lifting/lowering the ski jumper in case of an emergency situation. During normal operation the electricity is fed to the wire carriage through the power- & communication cables (2). Also, electronic information is continuously exchanged between the ECM (4) and the drive motor control unit (not shown) via said power- & communication cables (2) to ensure smooth operation. The electronic information concerns mainly parameters such as present- speed and position of the wire carriage (1).

Pre-set input parameters to the Electronic Control Module (ECM) needed for safe operation:

• Weight of ski jumper (will be confirmed by ECM via weight sensor)
• Desired length of jump
• Desired acceleration and maximum speed during the event
• Competition mode

DE10128452 discloses a ski jump facility for unskilled users comprising a cable system held in position by a suitable number of holding frames, which have articulated joints. A guide profile for fixing eyelets attached by a short cable to the harness of the jumper is mounted on the support cable. The facility is a pure mechanical system, i.e. has no controlled actuation means for regulate tension in harness cable or to control speed during the event. Moreover, the ski jumper harness is attached to a pulley running along the support cable. The present inventor has devised and embodied this invention to offer increased system safety and flexibility to allow the common man enjoyment of a ski jump event.

AT410756B, which comprises some of the features in claim 1, such as a cable system with towers comprising big reels for endless loop of support/transport cable, but the system uses an elastic mechanical traction mechanism without any continuously controlled actuators or other involvement of electronics. Furthermore, a drive motor positioned in one of the towers as described in said Austrian application is not a necessity for the present inventor who has devised and embodied this invention to offer increased system safety and flexibility to allow the common man enjoyment of a ski jump event.

Item No. Shown in figure No. Designation Qty 1 1, 3 & 4 Wire carriage 1 2 1 Power- & communication cables 1 3 1 & 4 Guide wire (running through the wire carriage, fixed to the towers) 1 4 1 Electronic Control Module (ECM) 1 5 1 Electro-mechanical unit (AC-motor with actuator to regulate the lifting wires) 2 6 1 Drive belt 2 7 1 Reel for lifting wires 2 8 1 & 3 Lifting wires 2 9 3 Safety harness (attachment of ski jumper to lifting wires) 1 10 1 & 4 Transport wire (fixed to wire carriage, running in a sling around the towers) 1 11 2 & 4 Drive tower (can contain an electrical motor driving a big reel for transport wire, item 10) 1 12 2 & 4 Slave tower (big reel, supporting and following transport wire, item 10) 1 13 3 Safety line (as restraint belt in car) 1 14 3 Ski jumper 1 15 2 Ski jump slope 1

Figure No. Figure designation 1 Wire carriage assembly (cut-through view) 2 Ski jump slope with towers, side view 3 Wire carriage with ski jumper, side view 4 Functional sketch; Ski jump wire system, top view (no scale)