Combustion-powered tool assembly
AssigneeIllinois Tool Works Inc.
InventorMilovan A. Nikolich
Life of this patent
Estimating the term…
Abstract
In a combustion-powered, fastener-driving tool, a cylinder body mounted fixedly within a housing structure has a combustion chamber defining an axis. A valve sleeve functions to open and close the combustion chamber. A piston operative within the combustion chamber and a driving blade moveable with the piston function to drive a fastener into a workpiece. An improved linkage for moving the valve sleeve includes a workpiece-contacting element and a pair of arms attached to such element and disposed alongside the cylinder body and the nosepiece. An improved, one-piece, interlocking member prevents a trigger from being actuated unless the combustion chamber is closed. Thus, a simple, compact, lightweight tool is provided.
Claims17
A combustion-powered tool for driving fasteners, comprising:
- a housing;
- a cylinder body disposed within said housing and having a gas inlet and outlet passage, and defining a longitudinal axis of said tool;
- a nosepiece disposed externally of said housing;
- a valve sleeve movably disposed around said cylinder body and within said housing for opening and closing said gas passage;
- and
- a valve sleeve-actuating mechanism comprising a collar movably mounted on said nosepiece, and a pair of arms integrally connected at first end portions thereof to said collar and extending alongside said cylinder body so as to be directly connected at second opposite end portions thereof to said valve sleeve and thereby provide a simple, compact, lightweight tool.
A powered tool for driving fasteners, comprising:
- a housing;
- a cylinder body disposed within said housing and having a gas inlet and outlet passage, and defining a longitudinal axis of said tool;
- a nosepiece disposed externally of said housing;
- a valve member movably disposed upon said cylinder body and within said housing for opening and closing said gas passage;
- and
- a valve member-actuating mechanism comprising a collar movably mounted on said nosepiece, and at least one arm integrally connected at a first end portion thereof to said collar and extending alongside said cylinder body so as to be directly connected at a second opposite end portion thereof to said valve member for conjoint movement with said valve member relative to said cylinder body and thereby provide a simple, compact, lightweight tool.
A combustion-powered tool for driving fasteners, comprising:
- a combustion chamber;
- a valve member movable along said combustion chamber between a chamber-opening position and a chamber-closing position, said valve member being arranged to open said combustion chamber when moved to said chamber-opening position and to close said combustion chamber when moved to said chamber-closing position;
- a trigger actuatable to initiate combustion within said combustion chamber;
- an aperture defined within said valve member;
- and
- a one-piece interlocking member connected at one end thereof to said trigger and having a second opposite end thereof movably engaged with said valve member such that when said valve member is disposed at said chamber-closing position, said second end of said interlocking member will be disposed within said aperture of said valve member so as to permit actuation of said trigger, while when said valve member is disposed at said chamber-opening position, said second end of said interlocking member will be engaged with a non-apertured portion of said valve member so as to prevent actuation of said trigger.
Dependencies are inferred from the claim text.