Patent ID: 11878191
Assignee: nan
Field: Furniture, games (Other fields)
Classification: CPC A | IPC A

Claim 0:
1. A belay device for controlling descent of a load along a rope comprising:
a base plate with an attachment hole on the base plate's top end, a spacer incorporating a pin on the base plate's bottom end, and a magnet affixed on a lateral side of the base plate's top end;
a cam assembly pivotably attached on an axis to the base plate at the bottom end of the base plate and a bottom end of the cam assembly, with a magnet affixed on a lateral side on the cam assembly's top end so that the magnet of the cam assembly meets the magnet of the base plate and with an integrated and proprietarily shaped cam affixed at a center of the cam assembly, which the cam incorporates a protrusion, and with a designated path for placing a rope around the cam between the cam and the spacer, wherein the rope travels freely along the path around the cam from the bottom ends of the base plate and the cam assembly to the top ends of the base plate and the cam assembly when the cam assembly's top end and the base plate's top end are met and attached to each other by the magnetic forces of the magnets affixed on the cam assembly and the base plate, forming an unlocked position of the base plate and the cam assembly, and the rope travels without restriction around the cam as a result of a volitional feeding by hand;
wherein the rope is pulled abruptly beyond volitional feeding by hand or the rope's travel is resisted by pulling in the opposite direction of the travel, the rope pulls the cam assembly turning the cam assembly on axis at the spindle at the bottom end of the cam assembly overcoming the magnetic force attaching the top ends of the base plate and the cam assembly and separating the top ends of the base plate and the cam assembly, so that the protrusion of the cam approaches the spacer and closes a gap between the protrusion of the cam and the spacer to cause a brake resulting in a locked position to prevent further travel of the rope; and
a lowering handle pivotably attached to the cam assembly with a torsion spring wherein the pulling of the lowering handle turns the cam assembly on the axis, widening the gap between the protrusion of the cam and the spacer to allow the rope to travel;
a cover plate pivotably attached on a bottom end to the spindle attaching the base plate and the cam assembly, wherein the cover plate is movable between an open position and a closed position, and an attachment hole at the cover plate's top end, wherein when the cover plate is in a closed position, the attachment holes of the base plate and the cover plate are aligned and an operator can maintain the belay device in the closed position by inserting an attachment means through the attachment holes, keeping the rope within designated path among the base plate, the cam assembly and the cover plate, and in the open position, the rope may be inserted or taken out of the belay device.