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AssigneeOglesby & Butler Research & Development Limited
InventorJohn Joseph Storey
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A gas powered tool (70) comprising a housing (73) and a soldering tool element (72) releasably coupled to the housing (73). A latching element (105) pivotally mounted on a pivot pin (106) in the housing (73) is retained in a non-latching state (FIG. 26) by an abutment element (102) which is urgeable into the housing (73) by the soldering tool element (72) when the soldering tool element (72) is coupled to the housing (73). The latching element (105) is spring biased in the direction of the arrow E from the non-latching state to a latching state (FIG. 27) for latching a switching element (89) in a first state to in turn retain an isolating valve (86), which supplies fuel gas from a reservoir (78) in the housing (73) to the soldering tool element (72), in the isolating state. On decoupling of the soldering tool element (72) from the housing (73), the abutment element (102) is spring urged outwardly and disengages the latching element (105). The latching element (105) pivots about the pivot pin from the non-latching state to the latching state engaging the switching element (89) in the first state, thereby retaining the isolating valve (86) in the isolating state isolating the soldering tool element (72) from the fuel gas in the fuel gas reservoir (78) in the housing (73).
A gas powered tool comprising a housing, a fuel gas supply means located in the housing, an isolating valve located in the housing, the isolating valve being selectively operable between an isolating state isolating the fuel gas supply means from a fuel gas source and an open state communicating the fuel gas supply means with the fuel gas source, a working tool element comprising a burner element, the working tool element being releasably coupleable to the housing with the burner element communicating with the fuel gas supply means, and a latching element responsive to decoupling of the working tool element from the housing for retaining the isolating valve in the isolating state.
A method for retaining an isolating valve of a gas powered tool in an isolating state isolating a fuel gas supply means from a fuel gas source in response to decoupling of a working tool element from the gas powered tool, the method comprising operating a latching element for retaining the isolating valve in the isolating state in response to decoupling of the working tool element from the gas powered tool.
Dependencies are inferred from the claim text.