Electric heating – Heating devices – Tool or instrument
Patent
1975-02-13
1976-10-12
Bartis, A.
Electric heating
Heating devices
Tool or instrument
30116, 30140, 83171, 219233, 219533, 225 935, H05B 100, B26D 710, B26F 312
Patent
active
039859967
ABSTRACT:
An apparatus for cutting arbitrary shapes in material, particularly in synthetic plastic foam material, comprises a bendable, shape-retaining, electrically conductive resistive wire. The wire may be successively formed into any desired form factor by selectively arranging either or both elements of a pair of independently movable electrically non-conductive wire-positioning elements which are respectively connected to end portions of the wire. The wire cuts the desired shape by the heat produced by connecting the wire to an electrical current source which heats the wire to a sufficiently high temperature. Securing portions are respectively provided on the movable wire-positioning elements so that the latter may be fixedly positioned and form an interlocked assembly, whereby the wire may be positioned into a narrow loop and thereby cut circular patterns into a series of workpieces. An electrical switch is provided in the electrical circuit path adjacent one of the end portions of the wire, on either one of the wire-positioning elements, or, on an extension member which is mechanically and electrically connected with a wire-positioning element; the switch being operative to complete the electrical circuit path.
REFERENCES:
patent: 1130373 (1915-03-01), Bright
patent: 2476612 (1949-07-01), Lobdell
patent: 2476680 (1949-07-01), Norgard
patent: 2734986 (1956-02-01), Gameros
patent: 2749608 (1956-06-01), Siemer
patent: 3338122 (1967-08-01), Lampe
patent: 3711677 (1973-01-01), Cummins
Bartis A.
Striker Michael J.
LandOfFree
Thermal cutting apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Thermal cutting apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal cutting apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-944273