Manual viscous liquid dispensing device having a locking mechanism
AssigneeNordson Corporation
InventorsRobert W. Springhorn, Robert C. Brennan
Life of this patent
Estimating the term…
Abstract
A product dispensing device includes a body having a first end and a second end; a product holding mechanism at the first end; a plunger defining a rack, supported by and extending through the product holding mechanism and the body from the first end to the second end; a drive mechanism, pivotally coupled to the body, including a trigger, a trigger return spring, and a pawl connected to the trigger via a pawl bias spring for bringing the pawl into contact with the plunger, the pawl having pawl teeth shaped to complement the rack; and a locking mechanism configured to limit a movement of the plunger in a rearwards direction while the locking mechanism is in a locked configuration.
Claims20
A product dispensing device comprising:
- a body having a first end and a second end;
- a product holding mechanism at the first end;
- a plunger defining a rack, supported by and extending through the product holding mechanism and the body from the first end to the second end;
- a drive mechanism, pivotally coupled to the body, including a trigger, a trigger return spring, and a pawl connected to the trigger via a pawl bias spring for bringing the pawl into contact with the plunger, the pawl having pawl teeth shaped to complement the rack;
- and
- a locking mechanism configured to limit a movement of the plunger in a rearwards direction while the locking mechanism is in a locked configuration,
- wherein when a user actuates the trigger, the pawl teeth are configured to move the plunger forward toward the first end of the body.
A product dispensing device comprising:
- a body having a first end and a second end;
- a product holding mechanism at the first end;
- a plunger defining a rack, supported by and extending through the product holding mechanism and the body from the first end to the second end;
- a drive mechanism, pivotally coupled to the body, including a trigger, a trigger return spring, and a pawl connected to the trigger via a pawl bias spring for bringing the pawl into contact with the plunger, the pawl having pawl teeth shaped to complement the rack;
- and
- a locking mechanism configured to limit a movement of the plunger in a rearwards direction while the locking mechanism is in a locked configuration,
- wherein when a user actuates the trigger, the pawl teeth are configured move the plunger forward toward the first end of the body, and when the user releases the trigger, the pawl teeth are configured to slide back over the rack allowing the user to further advance the plunger upon subsequent actuation of the trigger.
Dependencies are inferred from the claim text.