초록 ▼

A locking device and apparatus is disclosed. The locking device is particularly suitable for use in combination with a device such as a track mounted gangway and safety cage to reduce the ability to reposition the gangway and safety cage along a track surface while in the lowered access position. Th

A locking device and apparatus is disclosed. The locking device is particularly suitable for use in combination with a device such as a track mounted gangway and safety cage to reduce the ability to reposition the gangway and safety cage along a track surface while in the lowered access position. The locking device preferably includes a lever assembly and a pivot assembly having a friction pad connected to the lever assembly. When the lever assembly and/or gangway device is adjusted in a first direction, the friction pad applies pressure on the track surface and moveability between the gangway and the track surface is reduced.

대표청구항 ▼

1. A locking apparatus comprising: a safety cage capable of being raised and lowered, said safety cage movable along a track surface and comprising a locking device, said locking device comprising,a connecting link having a first portion and an opposing second portion,a lever assembly pivotably atta

1. A locking apparatus comprising: a safety cage capable of being raised and lowered, said safety cage movable along a track surface and comprising a locking device, said locking device comprising,a connecting link having a first portion and an opposing second portion,a lever assembly pivotably attached to said connecting link at said first portion,a pivot assembly pivotably attached to said connecting link at said opposing second portion,a friction pad on said pivot assembly,a carriage assembly mounted to said safety cage, said pivot assembly pivotably attached to said carriage assembly, anda spring having a first end and an opposing second end, said spring attached to said lever assembly at said first end and mounted to said safety cage at said second end,whereby as said safety cage is lowered, said friction pad applies pressure on said track surface reducing mobility between said safety cage and said track surface. 2. The apparatus of claim 1 wherein when said safety cage is raised, pressure is reduced between said friction pad and said track surface and moveability of said safety cage along said track surface is increased. 3. The apparatus of claim 1 wherein when said safety cage is lowered, said spring contracts. 4. The apparatus of claim 1 wherein said safety cage comprises a body and a stringer, said stringer is capable of being raised and lowered. 5. The apparatus of claim 4 wherein when said safety cage is raised, said stringer connects with an upper segment of said lever assembly causing said upper segment to move toward said track surface and a lower segment of said lever assembly to move away from said track surface, said movement of said lower segment of said lever assembly away from said track surface causes said connecting link to move away from said track surface and said friction pad of said pivot assembly to move away from said track surface, said pressure between said friction pad and said track surface is reduced. 6. The apparatus of claim 5 wherein when said safety cage is lowered, said stringer disconnects with said upper segment of said lever assembly and said spring causes said upper segment of said lever assembly to move away from said track surface, the lower segment of said lever assembly to move toward said track surface, said connecting link to move toward said track surface, and said friction pad of said pivot assembly to move toward said track surface, said pressure between said friction pad and said track surface is increased. 7. A locking apparatus, said apparatus comprising: a connecting link having a first portion and an opposing second portion;a lever assembly pivotably attached to said connecting link at said first portion;a pivot assembly pivotably attached to said connecting link at said opposing second portion, said pivot assembly having a friction pad;a carriage assembly adaptable for mounting to a track mounted device, said pivot assembly pivotably attached to said carriage assembly; anda spring having a first end and an opposing second end, said spring attached to said lever assembly at said first end and adaptable for mounting to said track mounted device at said second end. 8. The apparatus of claim 7 wherein said carriage assembly and said spring are mounted to said track mounted device, said track mounted device being moveable along a track surface. 9. The apparatus of claim 8 wherein when said spring contracts, moveability by said track mounted device along said track surface is reduced. 10. The apparatus of claim 9 wherein when said spring expands, moveability by said track mounted device along said track surface is increased. 11. The apparatus of claim 7 wherein said spring is mountable to said track mounted device by said carriage assembly. 12. The apparatus of claim 11 wherein said carriage assembly comprises a plate, said spring is mountable to said track mounted device by said plate. 13. The apparatus of claim 7 wherein said spring is mountable to said track mounted device by a plate attached to said track mounted device. 14. The apparatus of claim 7 wherein said lever assembly is pivotably attached to said connecting link by a shaft. 15. The apparatus of claim 14 wherein said connecting link comprises a first side and a second side, said shaft extends through said first side of said connecting link, through said lever assembly, and through said second side of said connecting link. 16. The apparatus of claim 7 wherein said pivot assembly is pivotably attached to said connecting link by a shaft. 17. The apparatus of claim 16 wherein said connecting link comprises a first side and a second side, said shaft extends through said first side of said connecting link, through said pivot assembly, and through said second side of said connecting link. 18. The apparatus of claim 7 wherein said pivot assembly is pivotably attached to said carriage assembly by a shaft. 19. The apparatus of claim 18 wherein said carriage assembly comprises a first side and a second side, said shaft extends through said first side of said carriage assembly, through said pivot assembly, and through said second side of said carriage assembly. 20. The apparatus of claim 7 wherein said lever assembly is mountable to said track mounted device by said carriage assembly.