Safety descent device

Details Safety descent device Safety descent device

1984-04-02

1985-06-18

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Torso harness

Attached to strand wound on reel, and means for retarding...

182238, 188268, 254377, A62B 112, A62B 116

Patent

active

045236640

ABSTRACT:
A portable descent device for lowering an object at a controlled speed has a rotating spool carrying wrapped cable mounted within a casing. The spool rotates about a fixed shaft in a sealed chamber containing a viscous liquid. A series of alternating, closely adjacent, flat, parallel, rotatable and non-rotatable discs are mounted in the sealed chamber and extend radially of the shaft. As cable is payed out from the device, movement of the rotatable discs through the fluid creates a frictional drag which slows the descent rate to a relatively constant, safe speed.

REFERENCES:
patent: 439191 (1890-10-01), Roper
patent: 3847377 (1974-11-01), Byrd
patent: 3879016 (1975-04-01), Kankkunen
patent: 4088201 (1978-05-01), McFarlane
patent: 4098375 (1978-07-01), Kornylac
patent: 4154328 (1979-05-01), Higgins
patent: 4416351 (1983-11-01), Geurtsen
patent: 4452430 (1984-06-01), Kankkunen
patent: 4463830 (1984-08-01), Geurtsen
patent: 4480716 (1984-11-01), Soubry

Affiliated with

Also associated with

Rating

Safety descent device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Safety descent device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Safety descent device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-976579