摘要:
A push chain (24) is used to drive a piston (26) into a canister (21) of extrudable material. The push chain is stored in an elongated chain magazine (32), withdrawn from the magazine and into the canister by actuation of a trigger (16) connected to a sprocket (22) for the chain. The push chain exerts a compressive force on a piston rod connected to a piston at a point offset from the center line of the piston, causing the piston to rotate to lock the push chain. The amount of material remaining in a tube of extrudable material is enunciated by way of a content indicator driven by the push chain.
摘要:
A piston (26) and piston rod for a rodless dispenser for extrudable material (23) are configured such that compressive force exerted on the piston from a push chain (24) causes a reactive torque to be created that locks the links of the chain together. The push rod is located away from the piston's geometric center.
摘要:
A push chain (24) is used to drive a piston (26) into a canister (21) of extrudable material. The push chain is stored in an elongated chain magazine (32), withdrawn from the magazine and into the canister by actuation of a trigger (16) connected to a sprocket (22) for the chain. The push chain exerts a compressive force on a piston rod connected to a piston at a point offset from the center line of the piston, causing the piston to rotate to lock the push chain. The amount of material remaining in a tube of extrudable material is enunciated by way of a content indicator driven by the push chain.
摘要:
A push chain (24) is used to drive a piston (26) into a canister (21) of extrudable material (23). The push chain is stored in an elongated chain magazine (32), withdrawn from the magazine and into the canister by actuation of a trigger (16) connected to a sprocket (22) for the chain. The push chain obviates the need for an elongated piston rod used in conventional extrudable material dispensers.
摘要:
A motion transmitting drive chain (50) is prevented from buckling by applying a relatively small compressive bias force to one side of the pins (56) around which the chain links (52) rotate. The bias force is applied on the locking projection (58) side of the pins axes of rotation such that the links are urged to rotate in the direction required to lock them against each other.
摘要:
A piston and piston rod for a rodless dispenser for extrudable material are configured such that compressive force exerted on the piston from a push chain causes a reactive torque to be created that locks the links of the chain together. The push rod is located away from the piston's geometric center.