Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
147 words
A circuit interrupter comprising: a pair of separable contacts (16, 18) at least one of which is mounted on a movable contact arm (36); and an operating mechanism (34) operatively connected to said movable contact for opening and closing said contacts, and including a latch lever (44) pivotally mounted on said movable contact arm, and a toggle link mechanism (34) of which one end (60) connected to an operating member (32) and the other end (64) operates said movable contact arm (36) and said latch lever (44), characterised in that the other end (64) of the toggle link mechanism engages the movable contact arm and the latch lever directly, and said movable contact arm (36) has a latch surface (72), and said latch lever has a latching end (80,82) which, in cooperation with said latch surface, releasably traps said other end (64) of said toggle link mechanism.
Claim 2
Dependent Claim
147 words
A circuit interrupter comprising: a pair of separable contacts (16, 18) at least one of which is mounted on a movable contact arm (36); and an operating mechanism (34) operatively connected to said movable contact for opening and closing said contacts, and including a latch lever (44) pivotally mounted on said movable contact arm, and a toggle link mechanism (34) of which one end (60) connected to an operating member (32) and the other end (64) operates said movable contact arm (36) and said latch lever (44), characterised in that the other end (64) of the toggle link mechanism engages the movable contact arm and the latch lever directly, and said movable contact arm (36) has a latch surface (72), and said latch lever has a latching end (80,82) which, in cooperation with said latch surface, releasably traps said other end (64) of said toggle link mechanism.
Claim 3
Dependent Claim
63 words
A circuit interrupter as claimed in claim 1, characterised in that said toggle link mechanism comprises a first link (60) rigidly connected to said operating mechanism, and a second link (64) pivotally connected at its one end to said first link, the other end of said second link being capable of being engaged by said latch surface (72) and said latching end (82).
Claim 4
Dependent Claim
33 words
A circuit interrupter as claimed in claim 2, characterised in that said second link comprises a substantially U-shaped rod, and the said ends of said second link are legs of the U-shaped rod.
Claim 5
Dependent Claim
27 words
A circuit interrupter as claimed in claim 2 or 3, characterised in that said other end of said second link has a roller (90) rotatably mounted thereon.
Claim 6
Dependent Claim
76 words
A circuit interrupter as claimed in claim 2 or 3 characterised in that said movable contact arm has two latch surfaces (72) spaced apart by a distance greater than the width of said latching end (80, 82) of said latch member, said other end (68) of said second link has three independently rotatable rollers (92, 94, 96) each of said rollers being engageable with a respective one of said latching surfaces (72) and said latching end.
Claim 7
Dependent Claim
63 words
A circuit interrupter as claimed in claim 2 or 3, characterisd in that said movable contact arm has a single latch surface (72) which does not face said latching end (80, 82) of said latch member, and said other end (68) of said second link has two independently rotatable rollers (98, 100) engageable respectively with the single latching surface and said latching end.