SAFETY DEVICE ON A ROPE WITH BLOCKING UNDER LOAD

• US 20140138191A1
• Filed: 11/14/2013
• Published: 05/22/2014
• Est. Priority Date: 11/16/2012
• Status: Active Grant

• Current Assignee: Zedel
• Original Assignee: Zedel
• Inventors: MAURICE, Alain, CHABOD, Pierre Olivier, QUILLARD, Christophe
• Granted Patent: US 9,126,062 B2
• Time in Patent Office: Days
• US Class Current: 188/65.1
• CPC Class Codes: A62B 1/06 by making use of rope-lowering devices capstans, winches B66D
• CPC Class Codes: A62B 1/14 with brakes sliding on the rope

Abstract

A safety device on a rope, comprising a first flange-plate and a movable second flange-plate, a roller mounted on a first spindle integral to the first flange-plate, which presents clearance in the heightwise direction. The movable second flange-plate is equipped:

• • with a securing notch operating in conjunction with the first spindle to block the device in the closed position when the roller is under load,
  • and with a latch actuated by control means to perform unlatching of the latter enabling opening of the second flange-plate when the device is no longer under load.

Claims

1. A safety device on a rope, comprising:

a first flange-plate and a movable second flange-plate delineating a transverse space in which a roller is arranged fitted on a first spindle integral to the first flange-plate,

articulation means of the second flange-plate comprising a second spindle allowing a swivelling movement between a closed position clamping the rope in captive manner in the transverse space, and an open position for fitting the rope on the roller,

wherein;

the first flange-plate presents clearance by positioning of the second spindle in an aperture of the first flange-plate, the external diameter of the second spindle being smaller than that of the aperture to define said clearance,

and the movable second flange-plate is equipped;

with a securing notch operating in conjunction with the first spindle to block the device in the closed position when the roller is under load,

and with a latch actuated by control means to perform unlatching of the latter enabling opening of the second flange-plate when the device is no longer under load.

2. The safety device according to claim 1, wherein the second spindle of the second flange-plate is hollow.

3. The safety device according to claim 1, wherein the securing notch is in the form of a hook in which the end of the first spindle engages following movement of the second flange-plate to the closed position.

4. The safety device according to claim 3, wherein the notch is provided with a ramp operating in conjunction with the latch to cause double blocking of the second flange-plate in the closed position, and in the loaded state on the roller.

5. The safety device according to claim 4, wherein the ramp is arranged to move the first flange-plate until said clearance is taken up when the device is no longer under load, said movement of the first flange-plate being derived from a manual opening movement of the second flange-plate, after the latch has been unlatched by the control means.

6. The safety device according to claim 1, wherein the roller is mounted fixed on the first spindle of the first flange-plate.

7. The safety device according to claim 1, wherein the roller is in the form of a rotary pulley mounted idle on the first spindle.

8. The safety device according to claim 7, wherein the pulley is associated with a clamping trigger designed to clamp the rope against the roller.

9. The safety device according to claim 1, wherein the roller is formed by a free-wheel with unidirectional rotation and blocking in the opposite direction.