Patent ID: 8181741

Claim:
A life saving implement comprising: a prime motor assembly having a motor body; a winding drum installed in the prime motor assembly to wind a first wire rope; a braking drum installed on a side of the winding drum to control an RPM of the winding drum; a first braking unit installed on a lower portion of the braking drum to control an RPM of the braking drum; a second braking unit installed on an upper portion of the braking drum to control the RPM of the braking drum; and a passenger vehicle connected to the first wire rope and moved by the rotation of the winding drum and the braking drum, wherein the first braking unit is configured to reduce a release speed of the first wire rope while the passenger vehicle descends, the first braking unit including: a brake lining installed on a lower portion of the braking drum; a braking spring installed on a lower portion of the braking lining; and a braking frame configured to generate compressive force of the braking spring, and wherein the second braking unit is configured to reduce a descending speed of the passenger vehicle when the passenger vehicle reaches a predetermined height from a ground, the second braking unit including: a plurality of speed reduction linings installed on an upper portion of the braking drum and spaced away from the braking drum; a plurality of springs configured to press the plurality of speed reduction linings one by one, to gradually reduce the RPM of the winding drum according to the height of the passenger vehicle; a plurality of second wire ropes configured to support the plurality of speed reduction linings from the motor body, and having hook rings connected to the speed reduction linings; a plurality of pins connected to the hook rings and formed to be removable to allow the speed reduction linings to contact the winding drum; and a plurality of third wire ropes located between the pins and the first wire rope, respectively, and configured to be hooked on the first wire rope in a sequence so as to draw the pins one by one.