Milovan A Nikolich

US Patent:

44037228, Sep 13, 1983

Filed:

Jan 22, 1981

Appl. No.:

6/227194

Inventors:

Milovan Nikolich - Chicago IL

Assignee:

Signode Corporation - Glenview IL

International Classification:

B25C 104

US Classification:

227 8

Abstract:

A fastener applying tool is disclosed, powered by the gases produced from internal combustion of a fuel and air mixture. A piston connected to a fastener driver is slidably mounted within a cylinder to move reciprocally downwardly and upwardly through a driving and a return stroke. A combustion chamber is formed at the upper end of the cylinder. A compression chamber is formed at the lower end of the cylinder. A spark plug powered by a piezo-electric firing device, is located within the combustion chamber. The combustion chamber features a set of fan blades driven by an electric motor which is continuously in operation when the tool is in use. A main valve mechanism actuated by a set of lifting rods which are moved upwardly and downwardly when the tool is moved toward and away from the workpiece, is used to control the flow of fresh air through the combustion chamber. When the combustion chamber is isolated from the atmosphere and the fuel and air are thoroughly mixed, the spark plug is fired to explode the fuel and air mixture and force the piston through its driving stroke. The rapid discharge of combustion gases at the end of the driving stroke produces a thermal vacuum within the combustion chamber.

US Patent:

45221626, Jun 11, 1985

Filed:

Nov 14, 1983

Appl. No.:

6/551559

Inventors:

Milovan Nikolich - Chicago IL

Assignee:

Signode Corporation - Glenview IL

International Classification:

F02B 7100

US Classification:

123 465C

Abstract:

An efficient, portable, easy to operate tool employing a linear motor is disclosed that is powered by the gases produced from the internal combustion of a fuel and air mixture. A supply of liquified gas stored under pressure in a cylinder provides the source of power. The linear motor is slidably mounted within a cylinder to move reciprocally downwardly and upwardly through a driving and return stroke. A combustion chamber is formed at the upper end of the cylinder. A spark plug powered by a piezo-electric firing device is located within the combustion chamber. The combustion chamber features a turbulence generator, such as a fan, driven by an electric motor which is continuously in operation when the tool is in use. A main valve mechanism actuated by a set of lifting rods that are moved upwardly and downwardly when the tool is moved towards and away from the workpiece, is used to control the opening and closing of the combustion chamber and to control the flow of fresh air through the combustion chamber. When the combustion chamber is isolated from the atmosphere and the fuel and air are thoroughly mixed, the spark plug is fired to explode the fuel and air mixture and force the linear motor through its driving stroke.

US Patent:

45493448, Oct 29, 1985

Filed:

May 31, 1983

Appl. No.:

6/499370

Inventors:

Milovan Nikolich - Skokie IL

Assignee:

Signode Corporation - Glenview IL

International Classification:

B23P 1100

US Classification:

29432

Abstract:

A fastener applying tool driven by air in a driving stroke and a return stroke featuring noise and recoil reduction and increased efficiency, driving force, and speed of operation. Air directed into the main cylinder to force the main piston through its driving stroke is stored in a chamber to rapidly return the main piston. Air compressed by the main piston at one end of the main cylinder is used to form an air cushion to keep the main piston from striking the bottom of the cylinder. The main piston cycles within a slidably mounted main cylinder. Pressurization of one end of the main cylinder during the driving stroke repositions the main cylinder to close the main valve to shut off high pressure air from the main piston and open a valve to vent the air above the piston to atmosphere. Upward movement of the cylinder and rapid return of the piston significantly reduces the recoil force normally experienced in such a tool. A valve assembly coaxially located at the opposite end of the main cylinder functions to admit and exhaust air to pressurize and vents the piston and main cylinder respectively.

US Patent:

44834748, Nov 20, 1984

Filed:

May 2, 1983

Appl. No.:

6/490409

Inventors:

Milovan Nikolich - Chicago IL

Assignee:

Signode Corporation - Glenview IL

International Classification:

B25C 104
B25C 108

US Classification:

227 8

Abstract:

An efficient, portable, easy to operate fastener applying tool is disclosed that is powered by the gases produced from the internal combustion of a fuel and air mixture. The tool uses an internally contained supply of liquified gas stored under pressure in a cylinder. Air is drawn in from outside the tool and mixed with fuel in a combustion chamber with the aid of a fan powered by an electric motor. A spark plug powered by a piezo-electric firing device is used to ignite the air-fuel mixture in the combustion chamber. Combustion gases are discharged from the cylinder at the end of the driving stroke and air is supplied to the lower face of the piston to return it to the original position. An interlock mechanism is provided to insure that the tool cannot be operated until the combustion chamber is closed and the combustion chamber cannot be reopened after ignition until the trigger is released.

US Patent:

RE324523, Jul 7, 1987

Filed:

Feb 20, 1986

Appl. No.:

6/831521

Inventors:

Milovan Nikolich - Wilmette IL

Assignee:

Signode Corporation - Glenview IL

International Classification:

F02B 7104

US Classification:

123 46SC

Abstract:

An efficient, portable, easy to operate tool employing a linear motor is disclosed that is powered by the gases produced from the internal combustion of a fuel and air mixture. A supply of liquified gas stored under pressure in a cylinder provides the source of power. The linear motor is slidably mounted within a cylinder to move reciprocally downwardly and upwardly through a driving and return stroke. A combustion chamber is formed at the upper end of the cylinder. A spark plug powered by a piezo-electric firing device is located within the combustion chamber. The combustion chamber features a turbulence generator, such as a fan, driven by an electric motor which is continuously in operation when the tool is in use. A main valve mechanism actuated by a set of lifting rods that are moved upwardly and downwardly when the tool is moved towards and away from the workpiece, is used to control the opening and closing of the combustion chamber and to control the flow of fresh air through the combustion chamber. When the combustion chamber is isolated from the atmosphere and the fuel and air are thoroughly mixed, the spark plug is fired to explode the fuel and air mixture and force the linear motor through its driving stroke.

US Patent:

44012519, Aug 30, 1983

Filed:

Nov 19, 1980

Appl. No.:

6/208215

Inventors:

Milovan Nikolich - Skokie IL

Assignee:

Signode Corporation - Glenview IL

International Classification:

B25C 104

US Classification:

227130

Abstract:

A fastener applying tool driven by air in a driving stroke and a return stroke featuring noise and recoil reduction and increased efficiency, driving force, and speed of operation. Air directed into the main cylinder to force the main piston through its driving stroke is stored in a chamber to rapidly return the main piston. Air compressed by the main piston at one end of the main cylinder is used to form an air cushion to keep the main piston from striking the bottom of the cylinder. The main piston cycles within a slidably mounted main cylinder. Pressurization of one end of the main cylinder during the driving stroke repositions the main cylinder to close the main valve to shut off high pressure air from the main piston and open a valve to vent the air above the piston to atmosphere. Upward movement of the cylinder and rapid return of the piston significantly reduces the recoil force normally experienced in such a tool. A valve assembly coaxially located at the opposite end of the main cylinder functions to admit and exhaust air to pressurize and vents the piston and main cylinder respectively.

US Patent:

44832800, Nov 20, 1984

Filed:

Nov 14, 1983

Appl. No.:

6/550521

Inventors:

Milovan Nikolich - Chicago IL

Assignee:

Signode Corporation - Glenview IL

International Classification:

F02B 7104

US Classification:

123 46SC

Abstract:

An efficient, portable, easy to operate tool employing a linear motor is disclosed that is powered by the gases produced from the internal combustion of a fuel and air mixture. A supply of liquified gas stored under pressure in a cylinder provides the source of power. The linear motor is slidably mounted within a cylinder to move reciprocally downwardly and upwardly through a driving and return stroke. A combustion chamber is formed at the upper end of the cylinder. A spark plug powered by a piezo-electric firing device is located within the combustion chamber. The combustion chamber features a turbulence generator, such as a fan, driven by an electric motor which is continuously in operation when the tool is in use. A main valve mechanism actuated by a set of lifting rods that are moved upwardly and downwardly when the tool is moved towards and away from the workpiece, is used to control the opening and closing of the combustion chamber and to control the flow of fresh air through the combustion chamber. When the combustion chamber is isolated from the atmosphere and the fuel and air are thoroughly mixed, the spark plug is fired to explode the fuel and air mixture and force the linear motor through its driving stroke.

US Patent:

41213394, Oct 24, 1978

Filed:

Aug 10, 1977

Appl. No.:

5/823339

Inventors:

Milovan Nikolich - Chicago IL

International Classification:

B23D 5702
B27B 1700

US Classification:

30381

Abstract:

A guard member is mounted on the chain saw for swinging movement between an actuate position and a reset position. The guard member occupies a normal position between the actuate and reset positions. A brake band is integral with a bowed column spring which applies the braking force to arrest movement of the cutting chain. A latching mechanism includes an arm with a latch pin engaged by a yieldable latch finger; this latch finger is integral with the bowed column spring. The guard member deflects the latch finger in response to movement of the guard to its actuate position; this action allows the column spring to apply the brake. The guard member is moved to its actuate position in response to a sudden movement of the chain saw, as in the case of "kickback"; this movement of the guard member is brought about by inertia or the engagement of the guard with the operator's body (most likely the wrist or the back of his hand) during this abrupt movement of the chain saw. Manual swinging of the guard to its reset position deactivates the brake and re-establishes the latch.