摘要:
An operating mechanism for an enclosure-mounted circuit breaker includes a slider for engaging the circuit breaker handle; a shaft-driven pivot for moving the slider between the handle on, off and reset positions; a holder for holding the slider in its reset position; a base plate for supporting the pivot and the slider; and a door-mounted rotary handle for rotating the shaft and operating the pivot. The rotary handle may engage the shaft in the on and off positions, and may be detached from the shaft in the reset position. The pivot may include a first pivot arm having a first cam surface for holding the slider in its reset position. A second cam surface on a second pivot arm may engage a first slider surface from off to on; a second slider surface from on to off, from off toward reset, and to resist reset to off; and an oblique slider surface when adjacent reset. The second cam surface may disengage the oblique surface at reset. Alternatively, the slider may include a notch and the base plate may include a latch for engaging the notch. The pivot may include a single pivot arm having a cam surface which engages a slider surface from off to on; an oblique slider surface from on to off, and from off to reset in order to engage the notch and the latch; and another oblique surface to disengage the notch and the latch from reset to off. The slider may include an oblique shoulder for moving the handle from on to off and from off to reset, for resisting the handle force from reset to off, and for using the handle force to engage the notch and the latch in the reset position in order to substantially decouple the handle force from the rotary handle.
摘要:
The handle of an electrical switch reciprocally movable in a slot in the switch housing is locked in a desired position by a locking mechanism which includes a base plate secured to the housing adjacent one end of the handle slot. A hasp member is hinged to the base plate at a hinge end for rotation about a hinge axis transverse to the path of reciprocal movement of the handle. The hasp member is rotatable between a locking position in which it overlaps the front end of the slot so that the handle cannot be moved away from the second end of the slot. A staple extending transversely from the base plate protrudes through an opening in the hasp member and has an opening for receiving one or more padlocks for locking the hasp member in the blocking position. In a second embodiment, the hasp member has a second opening through which the handle protrudes for locking the handle at the front end of the slot. Notches in arcuate fingers forming the hinge connection for the hasp member are engaged by sliding the hasp member axially on the hinge connection to latch the hasp member clear of the handle which allows unrestricted movement of the handle even with the switch mounted vertically.
摘要:
An electrical switching apparatus interface assembly provides remote actuation of the operating handle of a circuit breaker. The interface assembly includes the circuit breaker, a second switching apparatus, such as an actuating handle disposed in a remote location from the circuit breaker, a connector and an operating handle attachment including a handle-engaging segment for securely engaging the circuit breaker operating handle and an interfacing segment for receiving the connector. The actuating handle is operable between ON and OFF positions corresponding to ON and OFF positions, respectively, of the circuit breaker operating handle. The connector interfaces or links the circuit breaker to the actuating handle. In this manner, when the actuating handle is moved from the ON or OFF position, the connector moves the circuit breaker operating handle in a likewise manner.
摘要:
A DIN rail adapter for a circuit interrupter including a backplate having two guide members and two substantially planar stabilizing tab. The backplate further includes a first spring attachment region. A slider is slideably disposed between the guide members and the stabilizing tabs, and includes a second spring attachment region. A spring is disposed between the first and second spring attachment regions for biasing the slider in a first direction.
摘要:
A motor operator unit for an electrical switch is pivotally mounted on a bracket to swing between a closed, operative position in which an actuator in the motor operator unit engages the switch handle for electrical operation of the switch handle and an open position in which the switch handle is freely accessible for direct manual operation. The compliant actuator which is translated by a motor driven threaded shaft overtravels at each end of its reciprocal path after actuation of the switch handle to toggle a single power switch which determines both direction and shutoff of motor operation. A lockout plate mechanically prevents electrical and manual operation of the switch handle and carries an interlock switch which only enables motor operation when the motor operator unit is in the operative position and not locked out. The actuator is configured to prevent full rotation of the motor operator to the operative position, if the position of the actuator, which is virtually identified by indicators, does not correspond to handle position.
摘要:
The invention provides silicone hydrogel contact lenses that exhibit reduced back surface debris and reduced incidence of superior epithelial arcurate lesions.
摘要:
The present invention relates to a process comprising polymerizing via irradiation from a light source, a reaction mixture comprising at least one monomer and at least one photoinitiator wherein at least about 90% of incident light emitted by the light source is filtered to produce a soluble, high molecular weight polymer.
摘要:
The invention provides molds and mold inserts useful in the production of contact lenses. In particular, the invention provides high optical quality molds and inserts useful for manufacturing silicone hydrogel contact lenses.
摘要:
A wettable silicone hydrogel made by including a high molecular weight hydrophilic polymer into the silicone hydrogel monomer mix is presented. The hydrophilic polymer is entrapped in the hydrogel with little or no covalent bonding between it and the hydrogel matrix.
摘要:
The present invention is a repositionable substrate for microscope applications, having a geometric pattern on its top surface to convey coordinate information. In a preferred embodiment, this geometric pattern is a plurality of geometric shapes having a common axis of symmetry. In a most preferred embodiment, these geometric shapes are concentric, with varying linewidth.