Patent ID: 7543727
Filing Date: 2009-06-09
Classification: B27F

Abstract:
1. A circuit-breaker arrangement in an indicating arrangement forming part of an electrically powered stapler, through which arrangement a current is supplied which is registered by a control means which is electrically connected to the arrangement and by which the stapler is controlled, which stapler comprises a stapling head and an anvil, said stapling head comprising a staple cassette fitted interchangeably in the stapling head and accommodating staple blanks, and the indicating arrangement, which arrangement comprises an electrical line itself comprising the circuit-breaker arrangement which is connected to the line by an input line and an output line and which is in a first position when no staple cassette is fitted in the stapling head and in a second position when a staple cassette is fitted in the stapling head, the lines being connected together for electrical conduction in one of the positions and being separated as regards electrical conduction in the other position, and the circuit-breaker arrangement being so positioned as to be moved by the staple cassette from the first to the second position when the staple cassette is fitted to the stapling head, resulting in the power supply via the indicating arrangement being changed, which change is registered by the control means, CHARACTERISED in that the circuit-breaker arrangement comprises input line and output line, of which at least the input line is dimensionally stable and resiliently flexible, in that the dimensionally stable and resilient line is impinged upon by a region of the staple cassette when the latter is fitted to the stapling head, resulting in the line being moved against its resilient resistance in such a way that the circuit-breaker arrangement switches from the first position to the second position, and in that the resilient resistance moves the circuit-breaker arrangement back to the first position when the cassette is removed from the stapling head.