Extracting device for apparatuses

Claim 2

A drawout type electric circuit breaker assembly comprising: a. a stationary support member having a plurality of first plug-in-type electric contacts; b. a movable support member; c. an electric circuit breaker having a plurality of second plug-in-type contacts for coaction with said first plug-in contacts; d. means supporting said electric circuit breaker on said movable support member; e. operating mechanism for moving said movable support member and said circuit breaker between a first position in which said plug-in contacts of said circuit breaker are in contact with said plug-in contacts of said stationary support member and a second position in which said plug-in contacts of said circuit breaker are out of contact with said plug-in contacts of said support member; f. said operating mechanism including an operating handle; g. means removably connecting said operating handle to said operating mechanism; h. said circuit breaker including a generally rectangular insulating casing and a tripping member accessible through a wall of said insulating casing for causing tripping of said circuit breaker; i. means actuated upon connecting of said operating handle to said operating mechanism for initiating tripping movement of said tripping member, whereby said circuit breaker is automatically tripped to open circuit position whenever said operating handle is connected to said operating mechanism, thereby assuring that said circuit breaker will be in off condition whenever said operating mechanism is operated to move said plug-in contacts of said circuit breaker in to or out of engagement with said plug-in contacts of said stationary support member.

Claim 3

A drawout type circuit breaker assembly as set forth in claim 1 wherein said circuit breaker has a backwall positioned adjacent and substantially parallel to said stationary support member when said circuit breaker is in said second position, and wherein said circuit breaker tripping member comprises a member accessible through an opening in said backwall of said circuit breaker insulating casing.

Claim 4

A drawout type circuit breaker assembly as set forth in claim 1 where said means initiating tripping movement of said trippinG member upon connecting of said operating handle to said operating mechanism comprises a lever normally engaging and holding said tripping member in inactive position, a restraining catch normally engaging and holding said lever, and means engaged by said operating handle for engaging said restraining catch and moving said catch out of engagement with said lever to permit tripping movement of said tripping member.

Claim 5

A drawout-type circuit breaker assembly comprising: a. a stationary support member; b. a movable support member; c. means for mounting an electric circuit breaker on said movable support member; d. means for moving said movable support member toward and away from said stationary support member; e. said means for moving said movable support member toward and away from said stationary support comprising two pairs of toggle members, each of said toggle members being pivotally supported intermediate the ends thereof on said stationary support member and each of said pair of toggle members comprising an upper toggle link and a lower toggle link; f. said upper and lower toggle links of each pair having adjacent ends interconnected by lost-motion interconnecting means; g. a first support rod extending transversely of said stationary support member; h. means for guiding said first support rod for substantially rectilinear movement toward and away from said support member in a direction perpendicular to the length of said rod; i. a second support rod extending transversely of said stationary support member; j. means supporting said second support rod for substantially rectilinear movement toward and away from said stationary support member in a direction generally perpendicular to the length of said rod; k. means connecting said first support rod to the ends of said upper toggle links remote from said interconnected ends; l. means connecting said second support rod to the ends of said lower toggle links remote from said interconnected ends; and m. a manually operable handle member rigidly connected to at least one of said toggle links for rotating said toggle link about its pivotal support on said stationary support member.

Claim 6

A drawout-type circuit breaker assembly comprising: a. a stationary support member; b. a movable support member; c. means for mounting an electric circuit breaker on said movable support member; d. means for moving said movable support member toward and away from said stationary support member; e. said means for moving said movable support member toward and away from said stationary support comprising two pairs of toggle members, each of said toggle members being pivotally supported intermediate the ends thereof on said stationary support member and each of said pair of toggle members comprising an upper toggle link and a lower toggle link; f. said upper and lower toggle links of each pair having adjacent ends interconnected by lost-motion interconnecting means; g. a first support rod extending transversely of said stationary support member; h. means for guiding said first support rod for substantially rectilinear movement toward and away from said support member in a direction perpendicular to the length of said rod; i. a second support rod extending transversely of said stationary support member; j. means supporting said second support rod for substantially rectilinear movement toward and away from said stationary support member in a direction generally perpendicular to the length of said rod; k. means connecting said first support rod to the ends of said upper toggle links remote from said interconnected ends; l. means connecting said second support rod to the ends of said lower toggle links remote from said interconnected ends; and m. a manually operable handle member rigidly connected to at least one of said toggle links for rotating said toggle link about its pivotal support on said stationary support member.

Claim 7

A drawout circuit breaker assembly as set forth in claim 4, wherein said circuit breaker assembly includes overcenter spring means tending to hold said movable support member in each of its extreme positions with respect to said stationary support member.