초록 ▼

An inflator according to the present invention comprises a valve body having a replaceable pressure cartridge that is pierced by a piercing pin is operated by an actuating lever to inflate an attached object. The valve body is mounted in a protective housing, and a lanyard carried by the actuating l

An inflator according to the present invention comprises a valve body having a replaceable pressure cartridge that is pierced by a piercing pin is operated by an actuating lever to inflate an attached object. The valve body is mounted in a protective housing, and a lanyard carried by the actuating lever extends through an opening in the housing. The lanyard carries an indicia member that emerges from the housing when the handle is pulled to actuate the valve to provide a visible reminder that the cartridge has been discharged and needs replacing. The piercing pin slides in a sleeve slidable in a piercing pin chamber. A spring biases the piercing pin into engagement with the actuating lever. The lever is pivotable from stored to actuated positions to force the pin to pierce the pressure cartridge. An interlock comprising interengageable locking surfaces of the actuator lever and on the pin prevent movement of the lever from actuated position unless the discharged cartridge has been removed. Once the cartridge has been removed, a lockout pin projects into the cartridge chamber to obstruct the insertion of a fresh cartridge until the actuator lever retracts the pin upon return to its stored position. The actuator lever is retained in its stored position by a spring mounted to the actuator lever which releasably engages the housing, and the lanyard is looped through the spring.

대표청구항 ▼

An inflation valve actuator comprising a body having a cartridge chamber for receiving a replaceable pressure cartridge; a connected piercing pin chamber extending to the body exterior; a cartridge piercing pin slidable in the pin chamber between extended and retracted positions and having a piercin

An inflation valve actuator comprising a body having a cartridge chamber for receiving a replaceable pressure cartridge; a connected piercing pin chamber extending to the body exterior; a cartridge piercing pin slidable in the pin chamber between extended and retracted positions and having a piercing end and a remote abutment end; a sleeve slidable on the pin within the pin chamber adjacent the cartridge chamber and movable between a retracted position in the cartridge chamber and an extended position in the pin chamber; biasing means biasing the pin and the sleeve to retracted positions; and an actuating lever pivotally mounted to the housing adjacent the pin chamber for movement between stored, actuating, actuated and reset positions, the lever including an operating portion on end end having a recess for receiving the pin abutment in stored position, an adjacent first cam surface for engagement with the pin abutment in lever actuating position to move the pin to retracted position to pierce the cartridge, an adjacent locking surface for engagement with the pin abutment in lever actuated position to prevent movement of the lever toward stored position, and an adjacent second cam surface for engagement with the pin abutment to move the pin and sleeve to retracted positions in lever reset position to enable subsequent movement of the lever to tored position.