The present invention provides a method and apparatus of reducing current requirements by increasing resistance of the blade structure by reducing the cross sectional area of at least one section of the blade so that the electrical current requirements for heating of the blade to cutting temperature are reduced wherein the power supply and substantially entire unit may be mounted within a hand held unit. Methods of shaping blades to perform various heat distributions for specialty blades for custom cutting are disclosed. Further, an improved blade mounting structure is provided which includes structure for maintaining the legs of the blade parallel to the direction of cut and provides for easy insertion of new blades by maintaining a slotted blade cradle stable and in alignment with the blades and a clamp member away from the blade when the clamp mounting structure is loosened.

A surfboard includes a core covered with a laminate and having curved perforations in the deck area and the tail area of the surfboard, in order to prevent air blisters from forming between the core and laminate. The curved perforations are deformable under pressure to minimize the opening of the perforations to inhibit liquid from entering and maximizing under zero pressure to allow the maximum amount of trapped liquid and gasses from escaping. The core is formed from an extruded closed-cell polystyrene foam block that has been shaped by restraining it against a shaped form using shaped restraining tools and straps, and heating it; and by cutting using a hot wire. The core is laminated with FIBERGLAS and epoxy resin, and the perforations are formed using a perforating tool that has a planar or curved working surface and one or more heated needles extending perpendicularly from the working surface.

A surfboard includes a core covered with a laminate and having curved perforations in the deck area and the tail area of the surfboard, in order to prevent air blisters from forming between the core and laminate. The curved perforations are deformable under pressure to minimize the opening of the perforations to inhibit liquid from entering and maximizing under zero pressure to allow the maximum amount of trapped liquid and gasses from escaping. The core is formed from an extruded closed-cell polystyrene foam block that has been shaped by restraining it against a shaped form using shaped restraining tools and straps, and heating it; and by cutting using a hot wire. The core is laminated with FIBERGLAS and epoxy resin, and the perforations are formed using a perforating tool that has a planar or curved working surface and one or more heated needles extending perpendicularly from the working surface.

Payload deployment system (400) comprises a payload deployment device (402) and a payload deployment structure (406) comprising a frame (102) having a first end, a second end, and a body extending from the first end toward the second end. The frame includes an aperture (106) located along a length of the body, wherein the aperture extends from a first surface of the frame to a second surface of the frame. A heating element (116) is located along a portion of an edge of the aperture, wherein the heating element is configured to be selectively electrically energized. The frame further includes a mounting portion (104) wherein the payload deployment structure is connected to the payload deployment device via the mounting portion.

Payload deployment system (400) comprises a payload deployment device (402) and a payload deployment structure (406) comprising a frame (102) having a first end, a second end, and a body extending from the first end toward the second end. The frame includes an aperture (106) located along a length of the body, wherein the aperture extends from a first surface of the frame to a second surface of the frame. A heating element (116) is located along a portion of an edge of the aperture, wherein the heating element is configured to be selectively electrically energized. The frame further includes a mounting portion (104) wherein the payload deployment structure is connected to the payload deployment device via the mounting portion.

A heat chamfering method for a glass panel includes bringing a heater into contact with an edge of a glass panel by causing the heater to approach a chamfering start point. heat-chamfering the edge by moving the heater from the chamfering start point to a chamfering end point along a chamfering line. and bringing the heater into non-contact with the glass panel by causing the heater to depart from the chamfering end point. The heat-chamfering may include maintaining contact pressure between the heater moving along the chamfering line and the glass panel within a predetermined range of change. In the approaching. an angle defined by a chamfering start point approach line and the chamfering line at the chamfering start point ranges from 155 to 175. In the departure, an angle defined by the chamfering line and a chamfering end point departure line ranges from 155 to 175.

A method of cutting a polymeric tubular member and apparatus therefor is provided. The method includes moving the polymeric tubular member along a central longitudinal axis into a position to be cut. Further, providing at least one actuator with a cutting blade operably connected to the at least one actuator, with the cutting blade extending lengthwise along a cutting blade axis. Then, actuating the at least one actuator and moving the cutting blade into cutting engagement with the polymeric tubular member along a driven axis that extends in oblique relation to the cutting blade axis.

A method of cutting a polymeric tubular member and apparatus therefor is provided. The method includes moving the polymeric tubular member along a central longitudinal axis into a position to be cut. Further, providing at least one actuator with a cutting blade operably connected to the at least one actuator, with the cutting blade extending lengthwise along a cutting blade axis. Then, actuating the at least one actuator and moving the cutting blade into cutting engagement with the polymeric tubular member along a driven axis that extends in oblique relation to the cutting blade axis.

Device for cutting expanded polystyrene foam volumes or the like, obtaining double-curvature surfaces, comprising a first pair of linear guides; over each of the linear guides two pairs of plates arranged over skids are moving, where each pair of plates is connected by a horizontal beam; the two pairs of plates and the pair of horizontal beams allow supporting and fixing a block of material of expanded polystyrene foam or the like for cutting; the block of material supported on the plates is displaced by a first pair of synchronous belts and pulleys, which are driven by a first pair of step motors, which are simultaneously activated; where the block of material in its movement faces a rectangular frame which is arranged perpendicularly to the movement path of the block, with said rectangular frame having a fixed position and a flexible foil, which is covered with a sheath of thermal and electrical insulation, over which a resistive heating wire is helically wound, through which an electrical current circulates that heats the resistive heating wire and vaporizes the zone that is previous to physical contact with the block of material during the displacement thereof.

A method and apparatus for cutting a polymeric tubular member is provided. The method includes moving the polymeric tubular member along a central longitudinal axis into a position to be cut and providing a cutting blade operably connected to an actuator. The method further includes actuating the actuator to move the cutting blade conjointly along a straight linear axis. Then, bringing a cutting region of the cutting blade into cutting engagement with the polymeric tubular member, with the cutting region engaging the polymeric tubular member extending over a length of the cutting blade that is greater than a diameter of the polymeric tubular member.