Pulley with secured opening

Patent metadata

Field	Value
Publication number	US-11560294-B2
Application number	US-202016923673-A
Country	US
Kind code	B2
Filing date	Jul 8, 2020
Priority date	Jul 8, 2019
Publication date	Jan 24, 2023
Grant date	Jan 24, 2023

Abstract

The tandem pulley comprises a pair of sheaves mounted in line between first and second flanges. A gate is fitted rotating with respect to the first flange between closed and open positions. The gate comes into contact with the second flange in the closed position to close a housing. The clamp is movable in rotation on the gate between a locking position locking the gate in the closed position and an unlocking position. The clamp has a prong pressing on the first flange and the gate in the locking position. The clamp has an actuating area separated from the first flange by the gate. Rotation of the actuating area from the locking position to the unlocking position corresponds to a movement of the actuating area away from the second flange. Rotation of the actuating area results in pivoting of the prong.

First claim

The invention claimed is:

1. A tandem pulley comprising:
a first flange and a second flange each having an inner surface and an outer surface,
a pair of sheaves mounted in line between the first flange and the second flange,
a gate fitted movable in rotation with respect to the first flange between a closed position and an open position, the gate coming into contact with the second flange in the closed position,
a housing designed to receive a cable, the housing being bounded by the first flange, the second flange, the pair of sheaves and the gate, the gate closing the housing in the closed position and defining a slot in the open position,
a clamp mounted rotative around a rotation spindle fixed to the gate, the clamp being fitted movable in rotation between a locking position locking the gate in the closed position and an unlocking position allowing movement of the gate between the closed position and the open position, the clamp having a prong pressing on the first flange and on the gate in the locking position, and wherein the clamp is mounted rotative around a rotation spindle fixed to the gate
wherein the clamp defines an actuating area separated from the first flange by the gate, rotation of the actuating area from the locking position to the unlocking position corresponding to movement of the actuating area away from the second flange, said rotation of the actuating area causing pivoting of the prong.

2. The tandem pulley according to claim 1 , wherein the actuating area and the prong are separated by a rotation spindle of the clamp so that said rotation of the actuating area makes the prong move away from or towards the sheaves.

3. The tandem pulley according to claim 2 , wherein the actuating area is a concave actuating area having a pressing surface extending from the rotation spindle in a parallel direction to the axis of rotation of the sheaves when the actuating area is in the locking position.

4. The tandem pulley according to claim 3 , wherein the concave actuating area has an abutment surface extending from the rotation spindle in the direction of the second flange when the actuating area is in the locking position.

5. The tandem pulley according to claim 4 , wherein, when the clamp is in the unlocking position and the gate is in the open position, the abutment surface and the second flange define a slot opening into the housing designed to receive a cable, the abutment surface separating the pressing surface and the second flange, the slot being designed to allow the cable to pass.

6. The tandem pulley according to claim 5 , wherein, when the clamp is in the unlocking position and the gate is in the open position, the abutment surface is separated from the second flange by a distance smaller than the distance separating the first flange from the second flange in the housing.

7. The tandem pulley according to claim 3 , wherein movement from the locking position to the unlocking position corresponds to a rotation of the actuating area through an angle greater than or equal to 90°.

8. The tandem pulley according to claim 7 , wherein movement from the locking position to the unlocking position corresponds to a rotation of the actuating area through an angle strictly greater than 95°.

9. The tandem pulley according to claim 1 , wherein the clamp does not present any area salient from the outer surface of the first flange when observed in a direction corresponding to an axis perpendicular to rotation axis of the sheaves.

10. The tandem pulley according to claim 1 , wherein the gate comprises an obstacle salient from the inner surface of the second flange and directed towards the first flange when the prong is in the closed position, the distance between the obstacle and the first flange is smaller than 12 mm and wherein the first flange is provided with a through hole or a recess arranged to allow the obstacle to pass when the gate is in the open position.

11. The tandem pulley according to claim 1 , wherein the gate defines a hook pressing on an aperture of the second flange.

12. A transportation device comprising a cable and a tandem pulley according to claim 1 , the cable being arranged in the housing.

13. A tandem pulley comprising:
a first flange and a second flange each having an inner surface and an outer surface,
a pair of sheaves mounted in line between the first flange and the second flange,
a gate fitted movable in rotation with respect to the first flange between a closed position and an open position, the gate coming into contact with the second flange in the closed position,
a housing designed to receive a cable, the housing being bounded by the first flange, the second flange, the pair of sheaves and the gate, the gate closing the housing in the closed position and defining a slot in the open position,
a clamp fitted on the gate, the clamp being fitted movable in rotation between a locking position locking the gate in the closed position and an unlocking position allowing movement of the gate between the closed position and the open position, the clamp having a prong pressing on the first flange and on the gate in the locking position,
wherein:
the clamp defines an actuating area separated from the first flange by the gate, rotation of the actuating area from the locking position to the unlocking position corresponding to movement of the actuating area away from the second flange, said rotation of the actuating area causing pivoting of the prong,
the actuating area and the prong are separated by a rotation spindle of the clamp so that said rotation of the actuating area makes the prong move away from or towards the sheaves, and
the actuating area is a concave actuating area having a pressing surface extending from the rotation spindle in a parallel direction to the axis of rotation of the sheaves when the actuating area is in the locking position, and having an abutment surface extending from the rotation spindle in the direction of the second flange when the actuating area is in the locking position.

14. The tandem pulley according to claim 13 , wherein, when the clamp is in the unlocking position and the gate is in the open position, the abutment surface and the second flange define a slot opening into the housing designed to receive a cable, the abutment surface separating the pressing surface and the second flange, the slot being designed to allow the cable to pass.

15. The tandem pulley according to claim 14 , wherein, when the clamp is in the unlocking position and the gate is in the open position, the abutment surface is separated from the second flange by a distance smaller than the distance separating the first flange from the second flange in the housing.

16. A transportation device comprising a cable and a tandem pulley according to claim 13 , the cable being arranged in the housing.

17. A tandem pulley comprising:
a first flange and a second flange each having an inner surface and an outer surface,
a pair of sheaves mounted in line between the first flange and the second flange,
a gate fitted movable in rotation with respect to the first flange between a closed position and an open position, the gate coming into contact with the second flange in the closed position,
a housing designed to receive a cable, the housing being bounded by the first flange, the second flange, the pair of sheaves and the gate, the gate closing the housing in the closed position and defining a slot in the open position,
a clamp fitted on the gate, the clamp being fitted movable in rotation between a locking position locking the gate in the closed positi

Assignees

• Zedel

Inventors

• Quillard Christophe
• Vuillermoz Benoît

Classifications

• A63G21/22 Primary

  Suspended slideways · CPC title

• B66D3/08 Primary

  Arrangements of sheaves · CPC title