Cast cutting system
OwnerRobert H. Aguiarinventor
Life of this patent
Estimating the term…
Abstract
System and apparatus for removing a casted wall from a human appendage includes a strand embedded laterally through the wall at an inner surface thereof and adjacent the human appendage, and a take-up roller for severing the wall by drawing the strand into a cutting angle adjacent the inner surface and then through the wall, and further including a guide exterior of the wall and having a guide surface about which the strand is drawn. The guide surface is disposed substantially away from the cutting angle along the direction of travel of the take-up roller and the guide, whereby the strand is drawn through the wall and it is at a substantially acute angle of less than 60 degrees.
Claims12
A system for removing a casted wall from a human appendage, comprising:
- a strand including an outer, non-metallic and non-toxic material embedded laterally through said wall at an inner surface thereof which is adjacent the human appendage;
- means for severing said wall by drawing said strand into a cutting angle adjacent said inner surface and then through said wall, said severing means including a guide exterior of said wall and having a guide surface about which said strand is drawn, said guide surface being disposed substantially away from said cutting angle along the direction of travel of said severing means, whereby said strand is drawn through said wall at a substantially acute angle of less than 60 degrees said severing means comprising:
- (a) a low-friction skid having a flat surface with a slot therein with said strand drawn through said slot, said flat surface of said skid for contacting the outer surface of said wall and maintaining said angular relationship with said strand during movement of said skid along said direction of travel, and whereby extraneous material may be removed from said strand during passage through said slot, with said skid positioned between said guide and said outer surface;
- (b) a roller engaging said strand with means for rotating said roller for drawing said strand through said wall;
- and
- (c) a motor having a drive shaft, and a gear drive coupled between said drive shaft and said roller.
Apparatus for cutting a casted wall by drawing an embedded strand through said wall, said apparatus comprising:
- a low-friction skid having a flat surface for sliding along the outer surface of said wall;
- a roller carried by said skid for engaging an extremity of said strand and drawing said strand through said wall;
- a motor carried by said skid and coupled for driving said roller;
- and
- means for guiding said strand onto said roller.
A system for removing a casted wall from a human appendage, comprising:
- a strand of a non-metallic, non-toxic material extending lengthwise along the inner surface of said casted wall;
- a skid having a flat surface for sliding along the outer surface of said wall;
- a housing carried by said skid;
- and
- means including a guide and a motor carried within said housing for drawing said strand through said wall into said housing to thereby sever said cast.
Dependencies are inferred from the claim text.