Rotary foam cutter for tapering insulation

Details Rotary foam cutter for tapering insulation Rotary foam cutter for tapering insulation

1995-05-09

1997-09-16

Rada, Rinaldi I.

Cutting

Other than completely through work thickness or through work...

Splitting

83171, 836511, 83811, 83813, B26F 312

Patent

active

056668724

ABSTRACT:
A tapering apparatus is mounted on a table platform for tapering a sheet of foam insulation. The apparatus utilizes a rotating wire through which a current is applied in order to heat the wire. The temperature of the wire is maintained above the melting temperature of the foam insulation so that the insulation is melt and cut as it is forced across the wire. A conductive wire forms an endless belt positioned around a pair of rotatable sheaves. The wire is responsive to the angular rotation of the drive sheave. The sheaves are vertically adjustable in order to set a desired height and cutting angle for the tapering of the sheet of insulation. The current flowing through the wire is controlled such that the wire is heated to a temperature above the melting point of the foam insulation. A variable speed motor is connected to the drive sheave which is used to rotate the wire about the sheaves. The sheet of foam insulation is then forced into the rotating wire. The heat and rotation of the wire evenly melts the insulation and tapers the foam insulation sheet as it is forced across the wire.

REFERENCES:
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patent: 2972669 (1961-02-01), Brown
patent: 3064111 (1962-11-01), Newman
patent: 3097557 (1963-07-01), Langstaff
patent: 3199388 (1965-08-01), Redfield
patent: 3895438 (1975-07-01), Burkepile et al.
patent: 4479045 (1984-10-01), Inoue
patent: 4536145 (1985-08-01), Sawyer et al.
patent: 4608893 (1986-09-01), Huhne
patent: 4779497 (1988-10-01), Lee
patent: 4850844 (1989-07-01), Hunting
patent: 5429163 (1995-07-01), Frenkel et al.

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