Pulley with a pivoting flange and built-in jammer
AssigneeZedel
InventorsPaul Petzl, Jean-Marc Hede
Life of this patent
Estimating the term…
Abstract
A pulley comprises a pair of flanges, a rotary roller mounted on a first spindle, and a second flange which oscillates on the first spindle. A jammer is incorporated inside the pulley and comprises a pivotable tumbler on a second spindle between an active locking position and an inactive unlocking position of a rope. The second spindle is tubular and extends parallel to the first spindle, and includes an internal orifice disposed to come into alignment with a hole of the second flange when the second flange reaches a position near to a closed position, so as to enable a snap-hook to be attached through an orifice of the tumbler simultaneously resulting in locking of the second flange in the closed position.
Claims12
A pulley comprising:
- a) a first flange;
- b) a second flange including a hole, the first and second flanges bounding a space therebetween;
- c) a first spindle mounted to the first and the second flanges;
- d) a roller to guide a rope rotatably mounted on the first spindle;
- e) means for pivoting the second flange on the first spindle between an open position for fitting the rope on the roller and a closed position holding the rope captive in the space;
- f) a tubular second spindle mounted to the first flange and extending parallel to the first spindle, the second spindle including an internal orifice;
- and
- g) a jammer disposed in the space, the jammer including a tumbler which is pivotable on the second spindle between a locking position in which the tumbler contacts the rope and an unlocking position in which the tumbler does not contact the rope, the tumbler including an opening, the internal orifice of the second spindle being aligned with the hole of the second flange when the second flange is positioned between the open position and the closed position, thereby enabling a snap-hook to be attached through the hole and the internal orifice so as to simultaneously lock the second flange in the closed position.
A pulley comprising:
- a) a first flange;
- b) a second flange including a hole, the first and second flanges bounding a space therebetween;
- c) a first spindle mounted to the first and the second flanges, the second flange being pivotal on the first spindle between an open position and a closed position;
- d) a roller to guide a rope rotatably mounted on the first spindle;
- e) a tubular second spindle mounted to the first flange at a position spaced from the first spindle, the second spindle including an internal orifice;
- and
- f) a tumbler pivotal on the second spindle to selectively engage the rope, the internal orifice of the second spindle being aligned with the hole of the second flange when the second flange is positioned between the open position and the closed position, thereby enabling a snap-hook to be attached through the hole and the internal orifice so as to lock the second flange in the closed position.
A pulley comprising:
- a) a first flange;
- b) a second flange horizontally spaced from the first flange, the second flange including a hole;
- c) a roller disposed between the first and second flanges to guide a rope;
- d) a spindle mounted to the first flange and spaced vertically from the roller, the spindle including an internal orifice;
- and
- e) a tumbler pivotal on the spindle to selectively engage the rope, the second flange being pivotal such that the hole of the second flange is aligned with the internal orifice of the spindle, thereby enabling a snap-hook to be attached through the hole and the internal orifice so as to lock the second flange in a closed position.
Dependencies are inferred from the claim text.