CHRISTOPHER LEE, MD
Student, Health Care at Mall Rd, Burlington, MA

6261075, Jul 17, 2001

Mar 3, 2000

9/518982

Christopher W. Lee - Burlington MA
Mark D. Moss - Boxford MA

Synventive Molding Solutions, Inc. - Gloucester MA

B29C 4522, B29C 4523

425130

A coinjection molding system for injecting skin and core material into a mold cavity. The system includes a three position actuator for moving a valve pin into a closed position in which neither skin nor core flow is permitted, a middle position in which only skin flow is permitted, and an open position in which skin and core flow is permitted. The actuator includes a first piston slidably mounted in an actuator housing, and a second piston, attached to the valve pin, slidably mounted within the first piston. A shut-off is provided in the manifold for preventing skin flow to a particular nozzle during sequential gating.

6062840, May 16, 2000

Sep 2, 1997

8/922208

Christopher W. Lee - Burlington MA
Mark D. Moss - Boxford MA

Dynisco Hotrunners, Inc. - Gloucester MA

B29C 4523

425130

A coinjection molding system for injecting skin and core material into a mold cavity. The system includes a three position actuator for moving a valve pin into a closed position in which neither skin nor core flow is permitted, a middle position in which only skin flow is permitted, and an open position in which skin and core flow is permitted. The actuator includes a first piston slidably mounted in an actuator housing, and a second piston, attached to the valve pin, slidably mounted within the first piston. A shut-off is provided in the manifold for preventing skin flow to a particular nozzle during sequential gating.

6599116, Jul 29, 2003

May 13, 2002

10/144480

Christopher W. Lee - Burlington MA
Mark D. Moss - Boxford MA

Synventive Molding Solutions, Inc. - Peabody MA

B29C 4523

425564, 2643289

A valve pin actuator is disclosed that includes a cylinder mounted to the clamping plate, a piston slidably mounted in the cylinder, and a valve pin assembly carried by the piston. A hydraulic or pneumatic circuit is provided for controlling the movement of the piston, and in turn translation of the valve pin between the seated and unseated positions. The valve pin assembly includes a first part removably secured to the piston so as to translate therewith, and a second part for receiving the valve pin and secured to said manifold. The actuator assembly enables removal of the clamping plate without removal of the valve pin assembly, and also adjusting of the valve pin without removal of the clamping plate. The assembly further provides a clearance between the piston and valve pin assembly, to accommodate expansion and movement of the manifold that would otherwise cause a side load to be exerted on the valve pin.

6419870, Jul 16, 2002

Nov 3, 1998

09/185365

Christopher W. Lee - Burlington MA
Mark D. Moss - Boxford MA

Synventive Molding Solutions, Inc. - Peabody MA

B29C 4523

2643281, 425562, 425564

A valve pin actuator is disclosed that includes a cylinder mounted to the clamping plate, a piston slidably mounted in the cylinder, and a valve pin assembly carried by the piston. A hydraulic or pneumatic circuit is provided for controlling the movement of the piston, and in turn translation of the valve pin between the seated and unseated positions. The valve pin assembly includes a first part removably secured to the piston so as to translate therewith, and a second part for receiving the valve pin and secured to said manifold. The actuator assembly enables removal of the clamping plate without removal of the valve pin assembly, and also adjusting of the valve pin without removal of the clamping plate. The assembly further provides a clearance between the piston and valve pin assembly, to accommodate expansion and movement of the manifold that would otherwise cause a side load to be exerted on the valve pin.

5948450, Sep 7, 1999

Dec 17, 1997

8/992938

Paul M. Swenson - South Hamilton MA
Christopher W. Lee - Burlington MA

Dynisco Hotrunners, Inc. - Gloucester MA

B29C 4523

425562

A valve gated injection molding system to facilitate improved melt flow to the gate of the nozzle. The system includes an annular flow insert through which the valve pin passes. The annular flow insert includes an annular groove on its outer surface. The edge of the annular groove is spaced from the wall of the melt channel so that some of the melt can flow longitudinally between the edge of the groove and the wall, while the remainder of the melt flows in the groove. The flow direction initiated by the annular flow insert eliminates flow separation and dead spots about the valve pin. The system also includes an actuator assembly including a sled attached to the valve pin.

6294122, Sep 25, 2001

Nov 6, 1998

9/187974

Mark Moss - Boxford MA
David Kazmer - Amherst MA
James R. Rinderle - Amherst MA
Christopher Lee - Burlington MA

Synventive Molding Solutions, Inc. - Peabody MA

B29C 4523

2643289

In an injection molding machine, an apparatus for controlling movement of a pin comprising a plastic melt flow channel having an output end for delivering molten plastic injected into the channel under pressure to a mold cavity, wherein the pin comprises an elongated rod having an axis and an end, the pin being slidably mounted within the channel for movement along its axis within the channel, an electrically driven motor drivably interconnected to an actuating mechanism, wherein the actuating mechanism is drivably interconnected to the end of the pin, the motor being controllably drivable to drive the pin through movement along its axis within the channel.

5916605, Jun 29, 1999

Sep 27, 1996

8/721808

Paul M. Swenson - South Hamilton MA
Christopher W. Lee - Burlington MA

Dynisco HotRunners, Inc. - Gloucester MA

B29C 4523

425564

A valve gated injection molding system to facilitate improved melt flow to the gate of the nozzle. The system includes an annular flow insert through which the valve pin passes. The annular flow insert includes an annular groove on its outer surface. The edge of the annular groove is spaced from the wall of the melt channel so that some of the melt can flow longitudinally between the edge of the groove and the wall, while the remainder of the melt flows in the groove. The flow direction initiated by the annular flow insert eliminates flow separation and dead spots about the valve pin. The system also includes an actuator assembly including a sled attached to the valve pin.

5894025, Apr 13, 1999

Jun 13, 1997

8/874962

Christopher W. Lee - Burlington MA
Mark D. Moss - Boxford MA

KONA Corporation - Gloucester MA

B29C 4523

425562

A valve pin actuator is disclosed that includes a cylinder mounted to the clamping plate, a piston slidably mounted in the cylinder, and a valve pin assembly carried by the piston. A hydraulic or pneumatic circuit is provided for controlling the movement of the piston, and in turn translation of the valve pin between the seated and unseated positions. The valve pin assembly includes a first part removably secured to the piston so as to translate therewith, and a second part for receiving the valve pin and secured to said manifold. The actuator assembly enables removal of the clamping plate without removal of the valve pin assembly, and also adjusting of the valve pin without removal of the clamping plate. The assembly further provides a clearance between the piston and valve pin assembly, to accommodate expansion and movement of the manifold that would otherwise cause a side load to be exerted on the valve pin.