Zip line rail system

1. A zip rail system for a challenge course, comprising:

two fixed wheel support surface rails which extend between a higher end and a lower end of the zip rail system, wherein the wheel support surface rails are separated from one another by a distance defining a member slide slot opening between the two wheel support surface rails,

a member slide comprising a frame, a puck for engaging a challenge course track, and two wheels for engaging at least one of the two wheel support surface rails with at least a portion of the member slide extending downwardly through the member slide slot opening, and

an inline brake comprising a braking track and a braking carriage movably mounted to the braking track which follows a linear path arranged alongside the wheel support surface rails at the lower end of the zip rail system, wherein the braking carriage has a contact member pivotably mounted thereon,

wherein, in a braking position of the inline brake, the contact member is positioned below the wheel support surface rails and extends across a movement path of the member slide along the wheel support surface rails, and, in an open position of inline brake, the contact member is pivoted out of the movement path of the member slide along the wheel support surface rails, and

wherein the inline brake decelerates the member slide, which moves in a direction of travel along the movement path, via the member slide engaging the contact member in the braking position and displacing the braking carriage along the braking track against a braking force, which opposes the direction of travel, until the member slide reaches a pivot point where the contact member pivots out of the movement path of the member slide into the open position of the inline brake, thereby allowing the member slide to disengage the inline brake and continue in the direction of travel.

2. The zip rail system of claim 1 , wherein the contact member extends perpendicularly to the wheel support surface rails in the braking position.

3. The zip rail system of claim 1 , wherein the pivot point where the contact member pivots out of the movement path of member slide is provided by an end of the braking track or a gap in the braking track.

4. The zip rail system of claim 1 , wherein the braking carriage has a carriage wheel pivotably mounted thereon together with the contact member.

5. The zip rail system of claim 4 , wherein, in moving from the braking position to the open position as the inline brake decelerates the slide member, the carriage wheel rolls along the braking track and then, at the pivot point, the carriage wheel moves sidewards away from the wheel support surface rails.

6. The zip rail system of claim 5 , wherein, in the braking position, the carriage wheel is supported on a side of the braking track, and, in the open position, the carriage wheel is positioned behind an end of the braking track or in a gap in the braking track.

7. The zip rail system of claim 5 , wherein the contact member and the carriage wheel are carried by a pivot arm attached to the braking carriage, with the carriage wheel arranged at a free end of the pivot arm opposite the braking carriage, and the contact member positioned on the pivot arm between the carriage wheel and the braking carriage.

8. The zip rail system of claim 7 , wherein the pivot arm has a longitudinal extension which bends toward the braking track.

9. The zip rail system of claim 1 , wherein the braking carriage comprises one or more wheels via which the braking carriage is movably mounted to the braking track in a bidirectional manner.

10. The zip rail system of claim 1 , wherein the braking force is provided by a spring, retraction strap, winch, or eddy current brake.

11. The zip rail system of claim 1 , wherein the inline brake is positionally biased to move back into the braking position from the open position, whereby the braking carriage is returned along the braking track in a reverse direction to the direction of travel of the member slide, after the member slide disengages the inline brake.

12. The zip rail system of claim 11 , the braking carriage is restored in the reverse direction along the braking track via the braking force.

13. The zip rail system of claim 1 , further comprising a support member carrying the wheel support surface rails.

14. The zip rail system of claim 13 , wherein the support member has a plurality of support plates disposed thereon, the support plates each have two plate arms which extend downwardly, and each plate arm supports a respective one of the two wheel support surface rails.

15. The zip rail system of claim 14 , wherein the braking track is supported by one or more support plates of the support member.

16. The zip rail system of claim 15 , wherein the braking track is fastened to a respective support plate of the support member via a fixture.

17. The zip rail system of claim 14 , wherein the support member of the zip rail system is supported by one or more arms connected to and extending from the challenge course, a building, or a support column.

18. The zip rail system of claim 1 , wherein the two wheels of the member slide are disposed outwardly on opposite sides of the frame, and each wheel engages a respective one of the two wheel support surface rails.

19. The zip rail system of claim 1 , wherein the two wheels are disposed on the member slide lower than the puck.

20. The zip rail system of claim 1 , wherein the contact member of the inline brake engages the frame of the member slide in the braking position.

21. A challenge course having a zip rail system according to claim 1 , and further comprising the challenge course track, wherein the puck of the member slide has a width larger than a slot that extends along the challenge course track, such that the member slide extends through the slot when the member slide is engaged with the challenge course track with the puck above the slot.