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A safety apparatus safety apparatus for use with a sheave has a first plate suitable for placement over one side of the sheave, a second plate suitable for placement on an opposite side of the sheave, and a carriage positioned at a periphery of the first and second plates. The carriage extends acros

A safety apparatus safety apparatus for use with a sheave has a first plate suitable for placement over one side of the sheave, a second plate suitable for placement on an opposite side of the sheave, and a carriage positioned at a periphery of the first and second plates. The carriage extends across a gap between the plates. The carriage is movable along the peripheries of the first and second plates. The carnage includes a first carriage and a second carriage which are independently movable with respect to each other. The carriage includes a first body, a second body, and a discoidal member pivotally mounted to the first and second bodies. The discoidal member has a hole suitable for allowing the cable of the sheave to pass freely therethrough.

대표청구항 ▼

1. A safety apparatus for use with a sheave which has a cable extending therefrom, the safety apparatus comprising: a first plate adapted to be placed on one side of the sheave;a second plate adapted to be placed on an opposite side of the sheave; anda carriage positioned at a periphery of each of s

1. A safety apparatus for use with a sheave which has a cable extending therefrom, the safety apparatus comprising: a first plate adapted to be placed on one side of the sheave;a second plate adapted to be placed on an opposite side of the sheave; anda carriage positioned at a periphery of each of said first and second plates, said carriage extending across a gap between said first and second plates, said carriage movable along the peripheries of said first and second plates, said carriage suitable for receiving a portion of the cable therein, each of said first and second plates having a concave disc shape in which the peripheries of said first and second plates are separated by distance less than a distance between centers of said first and second plates. 2. The safety apparatus of claim 1, further comprising: a plurality of fasteners extending between said first and second plates so as to fix a position of said first and second plates relative to the sheave. 3. The safety apparatus of claim 1, said first plate having a counterbore on an inner surface thereof, said counterbore corresponding to an outer diameter of the sheave. 4. The safety apparatus claim 1, said first plate having identical configuration to that of said second plate. 5. The safety apparatus of claim 1, each of said first and second plates having an opening formed of a center thereof, said opening adapted to be positioned at an axle of the sheave. 6. The safety apparatus of claim 1, said carriage having a hole extending therethrough, said hole of said carriage having a diameter greater than a diameter of the cable such that the cable can freely slide through said hole. 7. The safety apparatus of claim 1, each of said first and second plates having a track formed at the periphery thereof, said carriage having a first portion received in the track of said first plate and a second portion received in the track of said second plate. 8. The safety apparatus of claim 1, said carriage comprising: a first body having a portion positioned at the periphery of said first plate;a second body having a portion positioned at the periphery of said second plate; anda discoidal member pivotally mounted to said first and second bodies, said discoidal member having a hole therein which is adapted to allow the cable to extend therethrough. 9. The safety apparatus of claim 8, said discoidal member comprising: a first track member pivotally mounted to said first body, said first track member having a track formed therein; anda second track member pivotally mounted to said second body, said second track member having a track formed therein. 10. The safety apparatus of claim 9, said first track member affixed to said second track member such that said track of said first track member is aligned with said track of said second track member. 11. The safety apparatus of claim 10, said first body having a hole formed therein in a location away from the periphery of said first plate, said second body having a hole formed therein away from the periphery of said second plate, said first track member having an axle extending therefrom and received in said hole of said first body, said second track member having an axle extending therefrom and received in said hole of said second body. 12. The safety apparatus of claim 11, further comprising: a first C-ring secured to said axle of said first body; anda second C-ring secured to said axle of said second body, said axles of said first and second bodies being freely rotatable within said holes of said first and second bodies. 13. A safety apparatus for use with a sheave which has a cable extending therefrom, the safety apparatus comprising: a first plate adapted to be placed on one side of the sheave;a second plate adapted to be placed on an opposite side of the sheave; anda carriage positioned at a periphery of each of said first and second plates, said carriage extending across a gap between said first and second plates, said carriage movable along the peripheries of said first and second plates, said carriage suitable for receiving a portion of the cable therein, said carriage comprising: a first carriage; anda second carriage, each of said first and second carriages being independently movable at the peripheries of said first and second plates, said first carriage suitable for receiving a first portion of the cable, said second carriage suitable for receiving a second portion of the cable therein. 14. A safety apparatus comprising: a sheave having a diameter, said sheave having the cable extending therearound;a first plate positioned over one side of said sheave;a second plate positioned on an opposite side of said sheave; anda carriage positioned at a periphery of each of said first and second plates, said carriage extending across a gap between said first and second plates, said carriage movable along the peripheries of said first and second plates, said carriage receiving a portion of the cable therein, said carriage comprising: a first body having a portion positioned at the periphery of said first plate;a second body having a portion positioned at the periphery of said second plate; anda discoidal member pivotally mounted to said first and second bodies, said discoidal member having an interior, said cable freely movable through said interior of said discoidal member. 15. The safety apparatus of claim 14, said first and second plates each having a diameter greater than said diameter of said sheave. 16. The safety apparatus of claim 14, said sheave having a thickness, each of said first and second plates having a concave disk shape in which the peripheries of said first and second plates are separated by a distance, said distance between the peripheries of said first and second plates being less than said thickness of said sheave. 17. The safety apparatus of claim 14, each of said first and second plates having a counterbore formed on an inner surface thereof, said sheave having exterior surfaces received in the counterbores of said first and second plates. 18. The safety apparatus of claim 14, said carriage comprising: a first carriage; anda second carriage, each of said first and second carriages being independently movable at the peripheries of said first and second plates, said first carriage receiving a first portion of the cable therein, said second carriage receiving a second portion of the cable therein.