Pencil gun

• US 10,286,419 B2
• Filed: 11/22/2017
• Issued: 05/14/2019
• Est. Priority Date: 11/23/2016
• Status: Active Grant

• Current Assignee: Fishman Corporation
• Original Assignee: Fishman Corporation
• Inventors: Beebe, W. Scott, Thomas, David
• Primary Examiner(s): Pancholi, Vishal
• Application Number:
  US15/821,241
• Publication Number:
  US 20180154390A1
• Time in Patent Office: 538 Days
• Field of Search: 222 52, 222 63, 222325-327, 222333, 222386, 222390
• CPC Class Codes: A61M 2005/2006 Having specific accessories
• CPC Class Codes: A61M 2005/2026 Semi-automatic, e.g. user activated piston is assisted by additional source of energy
• CPC Class Codes: A61M 2005/31588 electrically driven
• CPC Class Codes: A61M 5/20 Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically A61M5/142 , A61M5/46 take precedence; hypodermic projectiles F42B12/54
• CPC Class Codes: B05C 17/00593 Hand tools of the syringe type
• CPC Class Codes: B05C 17/0103 with electrically actuated piston or the like
• CPC Class Codes: B05C 17/0116 characterised by the piston driving means B05C17/0103, B05C17/0109, B05C17/0113, B05C17/015 take precedence
• CPC Class Codes: B05C 17/0133 Nut and bolt advancing mechanism, e.g. threaded piston rods

Abstract

Embodiments included herein are directed towards an apparatus that may be used to dispense a fluid. The apparatus may include a housing, wherein the housing includes a first end and a motor, wherein the first end is configured to be coupled to a syringe. The motor may be configured to be operatively connected to a drive tube, wherein at least a portion of the drive tube is configured to extend from and retract into an opening in the first end of the housing in response to the motor. One or more of the motor and the drive tube may be rotationally fixed to the housing. A first end of the drive tube may be configured to be coupled to a piston of the syringe.

Claims

1. An apparatus, comprising:

a housing, wherein the housing includes a first end and a motor, wherein the first end is configured to be coupled to a syringe;

wherein the motor is configured to be operatively connected to a drive tube, wherein at least a portion of the drive tube is configured to extend from and retract into an opening in the first end of the housing in response to the motor;

wherein the drive tube is rotationally fixed to the housing; and

wherein a first end of the drive tube is configured to be coupled to a piston of the syringe.

2. The apparatus of claim 1, wherein the opening of the first end of the housing includes a wiper and the portion of the driver tube is further configured to extend from and retract into the first end of the housing through the wiper.

3. The apparatus of claim 1, further comprising a piston hub, wherein a first end of the piston hub is configured to be coupled to the first end of the driver tube and a second end of the piston hub is configured to be coupled to a piston of the syringe.

4. The apparatus of claim 1, further comprising a retainer ring, wherein the retainer ring is configured to receive a non-dispensing end of the syringe and is further configured to be coupled to the first end of the housing.

5. The apparatus of claim 1, further comprising a membrane switch, wherein the membrane switch is configured to activate when the portion of the driver tube is fully retracted into the housing.

6. The apparatus of claim 1, wherein one or more of the motor and the drive tube are rotationally fixed to the housing with an anti-rotational device.

7. The apparatus of claim 1, wherein the position of the motor within the housing is fixed.

8. The apparatus of claim 1, wherein the motor includes a thrust coupling.

9. A pencil gun for use with a syringe having a cylinder with a first and second ends, a piston assembly, an output at the first end and an opening for a shaft at the second end of the cylinder, the pencil gun comprising:

a housing, wherein the housing includes a first end and a motor, an opening for a shaft at the first end, wherein the first end is configured to be coupled to the second end of the syringe;

wherein the motor is configured to be operatively connected to a drive tube, wherein at least a portion of the drive tube is configured to extend from and retract into the opening in first end of the housing in response to the motor;

wherein the drive tube is rotationally fixed to the housing; and

wherein a first end of the drive tube is configured to be coupled to the piston assembly of the syringe.

10. The pencil gun of claim 9, wherein the opening of the first end of the housing includes a wiper and the portion of the driver tube is further configured to extend from and retract into the first end of the housing through the wiper.

11. The pencil gun of claim 9, further comprising a piston hub, wherein a first end of the piston hub is configured to be coupled to the first end of the driver tube and a second end of the piston hub is configured to be coupled to a piston of the syringe.

12. The pencil gun of claim 9, further comprising a retainer ring, wherein the retainer ring is configured to receive a non-dispensing end of the syringe and is further configured to be coupled to the first end of the housing.

13. The pencil gun of claim 9, further comprising a membrane switch, wherein the membrane switch is configured to activate when the portion of the driver tube is fully retracted into the housing.

14. The pencil gun of claim 9, wherein one or more of the motor and the drive tube are rotationally fixed to the housing with an anti-rotational device.

15. The pencil gun of claim 9, wherein the position of the motor within the housing is fixed.

16. The pencil gun of claim 9, wherein the motor includes a thrust coupling.