# US 10,309,430 B2 · Pneumatic actuation assembly

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- Number: US 10,309,430 B2
- Document ID: US10309430B2
- Status: Granted
- Kind: B2
- Application number: 13/922,640
- Filed: 2013-06-20
- Published: 2014-02-13
- Granted: 2019-06-04
- Earliest claimed: 2012-08-10
- Assignees: Confluent Surgical, Inc.
- Applicants: Confluent Surgical, Inc.
- Inventors: Les Hull
- Web page: https://patentgrep.com/patent/US10309430B2

## CPC

- F15B 15/00: Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- B05C 17/015: with pneumatically {or hydraulically} actuated piston or the like {(B05C17/00543 takes precedence)}
- F15B: SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- B05C: APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (spraying apparatus, atomising apparatus, nozzles B05B; plant for applying liquids or other fluent materials to objects by electrostatic spraying B05B5/08)

## Abstract

An actuator assembly is provided. The actuator assembly includes housing configured for operable engagement by a user, a trigger assembly operably supported on the housing, a gas cartridge releasably secured to the housing, a valve assembly mounted within the housing for controlling the flow of pressurized gas through the housing and a cylinder actuator operably operably connected to the valve assembly. The cylinder actuator includes a piston selectively extendable therefrom configured for depressing a plunger. The piston includes a head having an inlet surface disposed within an inlet chamber of the cylinder actuator and an outlet surface disposed within the outlet chamber of the cylinder actuator. The exposed surface area of the first surface is equal to the exposed surface of the second surface.

## Claims

### Claim 1

An actuator assembly comprising:
a housing configured for operable engagement by a user;
a trigger assembly operably supported on the housing;
a gas cartridge releasably secured to the housing;
a valve housing mounted within the housing for controlling the flow of pressurized gas through the housing; and
a cylinder actuator defining an inlet chamber and an outlet chamber, the cylindrical actuator including a piston selectively extendable therefrom configured for depressing a plunger, the piston including a head assembly having an inlet surface disposed within the inlet chamber of the cylinder actuator defining a first area, and an outlet surface disposed within the outlet chamber of the cylinder actuator defining a second area, wherein the first area is equal to the second area.

### Claim 2 (depends on 1)

The actuator assembly of claim 1, wherein the piston includes a first shaft extending from the inlet surface of the head assembly and a second shaft extending from the outlet surface of the head.

### Claim 3 (depends on 1)

The actuator assembly of claim 1, wherein the piston includes a shaft extending through the head assembly such that the shaft extends from both the inlet and outlet surfaces of the head assembly.

### Claim 4 (depends on 1)

The actuator assembly of claim 1, wherein the cylinder actuator includes a first section defining the inlet chamber and a second section defining the outlet chamber, the head assembly including a first head disposed within the first section and a second head disposed within the second section, a first shaft extends between the first and second heads and a second shaft extends from the second head, wherein the first head includes the inlet surface and the second head includes the outlet surface.

### Claim 5 (depends on 1)

The actuator assembly of claim 1, wherein the housing is configured for operable connection with an applicator assembly.

### Claim 6 (depends on 1)

The actuator assembly of claim 1, wherein the valve housing includes at least a first actuator valve and at least a first dispense on/off valve.

### Claim 7 (depends on 6)

The actuator assembly of claim 6, wherein the valve housing further includes at least one solenoid valve.

### Claim 8 (depends on 1)

The actuator assembly of claim 1, wherein the housing includes a pencil grip.

### Claim 9 (depends on 1)

The actuator assembly of claim 1, wherein the housing includes a pistol grip.

### Claim 10

A system comprising:
an applicator assembly including at least a first syringe, wherein the at least first syringe includes a plunger; and
an actuator assembly operably connected to the applicator assembly, wherein the actuator assembly includes a cylinder actuator including a piston selectively extendable therefrom for depressing the plunger, the piston including a head having an inlet surface disposed within an inlet chamber of the cylinder actuator defining a first area and an outlet surface disposed within the outlet chamber of the cylinder actuator defining a second area, wherein the first area and the second area are equal.