Joon S Park

6637988, Oct 28, 2003

Nov 15, 2001

10/001774

Joon Park - Glendale CA, 91202

B23B 4900

408103, 408115 R

The pocket drilling fixture has a clamp base with a clamp face thereon. Opposing it is a clamp body with an opposing clamp face. Clamp structure, including a clamp arm on the base urges the faces together to clamp over a workpiece therebetween in a clamping direction. A guide carrier is mounted on the base to move in the direction at a right angle to the clamping direction. The base has a turret thereon with stops which can be positioned beneath the guide carrier to set its height above the base so that height can be preselected, depending on the workpiece thickness.

6659695, Dec 9, 2003

Apr 9, 2001

09/828682

Joon Park - Glendale CA, 91202

B23B 4900

408103, 408115 R

The woodworking doweling jig has first and second clamp members slidably mounted on guide rods. Drill guide holes are provided in the clamp members or in separately adjustable drill guide members. When the separate drill guide members are provided, they are slidably mounted on the guide rods to maintain alignment. Dowel guide slots are provided in an alignment member which may be part of the upper clamp member. The alignment member has dowel guide slots in it which are in alignment with the drill guide holes in the guide member(s). Adjustment can provide for dowel drilling the same distance from one workpiece surface for aligning the surface. The jig can also be used for mounting the end of one plank against the side of a second plank either at its end or away from the end.

7098576, Aug 29, 2006

Jan 10, 2005

11/031950

Robert C. Allison - Rancho Palos Verdes CA, US
Ron K. Nakahira - Fullerton CA, US
Joon Park - Gardena CA, US
Brian H. Tran - Rosemead CA, US

Raytheon Company - Waltham MA

H01L 41/08

310328, 310331

A micro-electro-mechanical device including a first substrate; a first contact disposed on a first surface of the substrate; a piezoelectric actuator disposed over the first surface of the substrate; a second contact coupled to the actuator and disposed in proximity to the first contact; a gap control mechanism disposed between the substrate and the actuator for limiting movement of the first contact relative to the second contact. In the exemplary embodiment, the gap control mechanism is a gap control stop constructed of dielectric material. In practice, plural stops are used. In the exemplary embodiment, plural thermosonic bonds are used to connect the actuator to the first substrate. A second substrate is disposed over the piezo-electric actuator. The second substrate has wells over the bonds to facilitate application of a bonding tool to the bonds. The gap control mechanism provides consistent height control between a flipped chip and its base substrate without exposing the assembly to high temperatures.

7132723, Nov 7, 2006

Nov 14, 2002

10/294413

Joon Park - Gardena CA, US
Ron K. Nakahira - Buena Park CA, US
Robert C. Allison - Rancho P.V. CA, US

Raytheon Company - Waltham MA

H01L 21/00

257419, 257602, 310319, 3612833

A radio frequency (RF) micro electro-mechanical system (MEMS) device and method of making same are provided, the device including an RF circuit substrate and an RF conducting path disposed on the RF circuit substrate, a piezoelectric thin film actuator, and a conducting path electrode. The piezoelectric thin film actuator has a proximal end that is fixed relative to the RF circuit substrate and a cantilever end that is spaced from the RF circuit substrate. The conducting path electrode is disposed on the cantilever end of the piezoelectric thin film actuator. The cantilever end of the piezoelectric thin film actuator is movable between a first position whereat the conducting path electrode is spaced from the RF path electrode and a second position whereat the conducting path electrode is spaced from the RF path electrode a second distance, wherein the second distance is less than the first distance. The RF MEMS device is particularly useful as a tunable capacitor. The RF MEMS device requires lower operating voltage, and provides variable RF tuning capacity, fewer stiction problems, simplified fabrication, and an improved switching time.

7134814, Nov 14, 2006

Sep 23, 2003

10/668659

Joon Park - Glendale CA, US

B23B 47/28

408103, 408115 R

A pocket drilling fixture has a clamp base with a clamping face formed thereon. Opposing the clamp base is a clamp body with an opposing clamping face. Clamp structure interengages the clamp body and the base. The clamp structure includes a clamp actuator positioned adjacent to the base to move the clamp body in a clamping direction. A guide carrier has at least one drill guide disposed therein, and has an axis which intersects a plane defined by the clamping face. The guide carrier is mounted on the base to move in the direction parallel to the plane. The base may have formed thereon a turret having multiple surfaces for height adjustment. The turret may be positioned under the guide carrier to set its height above the base so that height can be preselected, depending on the workpiece thickness.

7168877, Jan 30, 2007

Jan 23, 2004

10/764085

Joon Park - Glendale CA, US

B05C 11/00

401266, 401 9, 118254

A brush applicator forms a tapered inner wall and inwardly extended flange inside of a nozzle, which secures either molded or crimped brush assembly. Two edge applicators apply a substantially uniform thin layer of adhesive or glue only on the edge surface of a workpiece. A first edge applicator applies glue through an exit and a second edge applicator has a roller with side flanges and with a reduced portion in-between. A flat surface applicator implements may have plural vanes and channels inside of two outer walls to distribute adhesive to a wider flat exit. A biscuit applicator applies glue on two side surfaces of elliptical slots that are formed by biscuit cutters. The glue flows through plural vanes or plural transversely positioned openings and passes to form two opposite layers of glue. A dowel applicator applies a thin substantially uniform layer of glue on the wall of a dowel-receiving hole prior to installation of dowel pins. The glue is applied using a cylindrical nozzle body with plural projections and a reduced diameter portion.

7374373, May 20, 2008

Jun 21, 2005

11/158403

Joon Park - Glendale CA, US

B23B 47/28

408 12, 408 46, 408 53, 408 87, 408103, 408115 R

A pocket-hole drilling apparatus for drilling pocket-holes in a workpiece is disclosed. In one embodiment, an initiation switch actuates clamping the workpiece and the movement of a drilling module to cut a pocket-hole. The drilling module has a motor and a step-drill mounted thereon, which is slidably mounted on a guide module. The axis of the drilling module movement intersects work surface. In another embodiment, a movable fence provides the adjustability of pocket-hole depth. In yet another embodiment, two actuator tips are disposed in a fence to prevent the drilling of a pocket-hole through the sidewall of a workpiece. In still another embodiment, a short stroke clamping actuator is used to prevent human finger injury. In still another embodiment, a blower or an ejector pump is used to remove wood chips, wherein the blower is either attached to a drilling motor or to a separate blower motor; the ejector pump is mounted near the drill guide. In still another embodiment, two pocket-drills are slidably mounted on a block so as to drill two pocket-holes and to adjust pocket-hole spacing.

8177451, May 15, 2012

Jan 29, 2007

11/699642

Joon Park - Glendale CA, US

B05C 11/00

401266, 401 5, 401193, 401261

The brush applicator has a tapered inner wall and inwardly extended flange inside of a nozzle, which secures a molded or crimped brush assembly. Two edge applicators apply a substantially uniform thin layer of adhesive or glue only on the edge surface of a workpiece. A first edge applicator applies glue through an exit and a second embodiment of the edge applicator has a roller with side flanges and with a reduced portion in-between. A flat surface applicator may have plural vanes and channels inside of two outer walls to distribute adhesive to a wider flat exit. A biscuit applicator applies glue on two side surfaces of elliptical slots that are formed by biscuit cutters. The glue flows through plural vanes or plural transversely positioned openings and passes to form two opposite layers of glue. A dowel applicator applies a thin substantially uniform layer of glue on the wall of a dowel-receiving hole prior to installation of dowel pins. The glue is applied using a cylindrical nozzle body with plural projections and a reduced diameter portion.