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US 5,687,899 AGranted
Portable fastener driver using inflammable gas
AssigneeIllinois Tool Works Inc.
InventorsYuji Dohi, Ernest John Wendling
Life of this patent
Estimating the term…
Abstract
A gas type fastener driver 1 is supplied with electric power from an external power source 55 through an electric cord 53. When a trigger 45 is pulled to turn a switch 47 on, the external electric power is supplied to an ignition plug 17 to burn gas in a combustion chamber 14. Combustion gas pushes a piston 11 forward to drive a nail n by a driving rod 12 connected to the piston 11.
Claims20
A portable fastener driver tool, comprising
- a housing having handle means provided thereon;
- a combustion chamber provided within said housing
- a fuel container disposed within said housing for supplying fuel into said combustion chamber of said housing;
- an ignition plug for igniting said fuel conducted into said combustion chamber of said housing;
- a driving rod movably disposed within said housing such that said driving rod is driven forward along a drive axis and out of said housing as a result of the combustion of said fuel conducted into and ignited within said combustion chamber of said housing;
- fastener magazine means provided in front of said driving rod, when said driving rod is disposed in a fully retracted state, for serially supplying fasteners one by one to said drive axis such that said fasteners can be serially driven as a result of the successive forward movements of said driving rod;
- electrical switch means mounted upon said handle means of said housing for movement between ON and OFF states;
- and
- an electric cord having one end thereof operatively connected to a power source which is external of said tool for receiving electrical power from said external power source, and an opposite end thereof operatively connected to said housing for supplying said electrical power to said ignition plug through said electrical switch means when said electrical switch means is disposed in said ON state.
6 more elements
A portable fastener driver tool, comprising:
- a housing having handle means provided thereon;
- a cylinder provided within said housing and slidably supporting a piston within a first part thereof and defining a combustion chamber within a second part thereof;
- a liquid gas container disposed within said housing for supplying inflammable gas into said combustion chamber of said cylinder;
- an ignition plug for igniting said inflammable gas conducted into said combustion chamber of said cylinder;
- a driving rod fixed to said piston such that said driving rod is driven forward along a drive axis and out of said cylinder as a result of the combustion of said inflammable gas conducted into and ignited within said combustion chamber of said cylinder;
- fastener magazine means provided in front of said driving rod, when said driving rod is disposed in a fully retracted state, for serially supplying fasteners one by one to said drive axis such that said fasteners can be serially driven as a result of the successive forward movements of said driving rod;
- electrical switch means mounted upon said handle means of said housing for movement between ON and OFF states;
- and
- an electric cord having one end thereof operatively connected to a power source which is external of said tool for receiving electrical power from said external power source, and an opposite end thereof operatively connected to said housing for supplying said electrical power to said ignition plug through said electrical switch means when said electrical switch means is disposed in said ON state.
6 more elements
A portable fastener driver tool, comprising:
- a housing having handle means provided thereon;
- a combustion chamber provided within said housing;
- fan means disposed within said combustion chamber for agitating gases within said combustion chamber;
- a fuel container disposed within said housing for supplying fuel into said combustion chamber of said housing;
- an ignition plug disposed within said combustion chamber for igniting said fuel conducted into said combustion chamber;
- a driving rod movably disposed within said housing such that said driving rod is driven forwardly along a drive axis and out of said housing as a result of the combustion of said fuel conducted into and ignited within said combustion chamber of said housing;
- fastener magazine means provided in front of said driving rod, when said driving rod is disposed in a fully retracted position, for serially supplying fasteners one by one to said drive axis such that said fasteners can be serially driven as a result of the successive forward movements of said driving rod;
- an electric cord having one end thereof operatively connected to a power source which is external of said tool for receiving electrical power from said external power source, and a second opposite end thereof operatively connected to said housing for supplying said electrical power to said tool;
- and
- electrical switch means mounted upon said handle means of said housing for movement between ON and OFF states and electrically connected to said second opposite end of said electric cord for controlling the distribution of said electrical power to both said ignition plug and said fan means disposed within said combustion chamber of said housing.
7 more elements
Dependencies are inferred from the claim text.