Kenneth A Swanstrom

US Patent:

6439819, Aug 27, 2002

Filed:

May 25, 2001

Appl. No.:

09/864405

Inventors:

Kenneth A. Swanstrom - Doylestown PA
Harold D. Ross - Chalfont PA
William P. McDonough - Collegeville PA

Assignee:

PEM Management, Inc. - Wilmington DE

International Classification:

F16B 3704

US Classification:

411437, 411 61, 411183, 411433, 470 25

Abstract:

A three-sided, progressively-formed threaded fastener is comprised of a plurality of planar longitudinal faces intersecting at comer areas. Shank tabs extend downward from the bottom of each of the faces at the base of the fastener. Threaded regions along the inside surface of the planar faces are coined indentations applied during the formation of the fastener. A plurality of wedge-shaped protrusions extend downward from the comer areas at the base of the fastener. The combination of shank tabs and wedge-shaped protrusions form a clinch profile along the bottom of the fastener so that it may can be affixed to a sheet of metal by clinch fit.

US Patent:

20040045147, Mar 11, 2004

Filed:

May 7, 2003

Appl. No.:

10/415938

Inventors:

Kenneth Swanstrom - Doylestown PA, US
Harold Ross - Chalfont PA, US
William McDonough - Collegeville PA, US

International Classification:

B23P019/02

US Classification:

029/235000

Abstract:

An elongate, elastomeric fastener () includes a head () and barrel section (). The fastener may be installed into a hole () in a panel () by stretching by the elastomeric, elongated portion reducing diameter so that it passes through the hole () and fastens by releasing the force on the fastener () allowing gripping around the hole (). In yet a further embodiment, a central push-pin () may be used to apply an axial force on the fastener which is required to operate the fastener ().

US Patent:

20050103961, May 19, 2005

Filed:

Feb 13, 2003

Appl. No.:

10/506996

Inventors:

Kenneth Swanstrom - Doylestown PA, US
Joseph McKenna - North Wales PA, US
Brian Bentrim - Hatfield PA, US

International Classification:

F16B045/00

US Classification:

248305000

Abstract:

A cable hook includes attachment means with a substantially base having a plantar bottom surface. The hook portion extends upwardly from the base () and includes upper and lower jaws () with a lateral opening that is substantially circular. A single, laterally-extending notch () is located on the inside surface of the upper jaw proximate a frontal opening () between the jaws. Orientation marks () are included on the bottom surface of the base (). Panel attachment means () are preferably deformer undercut grooves () for receiving the cold flow of metal from a metal panel () attached thereby. The hook () may be used to secure cables, a spring, a rod, tubing, or shaft.

US Patent:

59279206, Jul 27, 1999

Filed:

Sep 30, 1998

Appl. No.:

9/162989

Inventors:

Kenneth A. Swanstrom - Doylestown PA

Assignee:

Penn Engineering & Manufacturing - Danboro PA

International Classification:

F16B 3704
F16B 3716

US Classification:

411180

Abstract:

An insert for plastic sections is manufactured from a flat strip of metal by high-speed progressive die-stamping which forms the strip into a threaded female insert. The metal strip is first cut into a flat blank and then thread regions are impressed on the face of the strip, providing a thread pitch profile. During the stamping operation, the strip is folded to form a triangular hollow tube with sharp-edged protrusions extending radially outward from each corner of the triangle. A tab and interlocking cutout secure the abuting longitudinal side edges of the strip and ensures axial alignment of the thread regions. As a result of the folding and stamping process, the thread regions lie along the interior wall of the tubular construction and define a thread pitch diameter which will accept the screw threaded into the center of the insert. The resulting triangular insert is sized so that a diameter describing the outside corners of the insert is equal to or slightly larger than the diameter of the intended receiving hole, while the barbs extend to a greater diameter than the hole. A closure may be included at the bottom of the insert to provide surrounding material from entering the insert channel as the insert is installed.

US Patent:

60799226, Jun 27, 2000

Filed:

Jul 16, 1999

Appl. No.:

9/356038

Inventors:

Harold D. Ross - Chalfont PA
William P. McDonough - Royersford PA
Kenneth Swanstrom - Doylestown PA

Assignee:

PEM Management, Inc. - Wilmington DE

International Classification:

F16B 3704
F16B 3716

US Classification:

411180

Abstract:

An insert for plastic sections is manufactured from a flat strip of metal by high-speed progressive die-stamping, which forms the strip into a threaded female insert. The metal strip is first cut into a flat blank and then thread regions are impressed on the face of the strip, providing a thread pitch profile. During the stamping operation, the strip is folded to form a triangular hollow tube with sharp-edged protrusions extending radially outward from each corner of the triangle. An interlocking side tab and interlocking cutout secure the abutting longitudinal side edges of the strip and ensures axial alignment of the thread regions. As a result of the folding and stamping process, the thread regions lie along the interior wall of the tubular construction and define a thread pitch diameter, which will accept the screw threaded into the center of the insert.

US Patent:

57131163, Feb 3, 1998

Filed:

Jul 13, 1995

Appl. No.:

8/502156

Inventors:

John L. Nickerson - Scottsdale AZ
Kenneth A. Swanstrom - Doylestown PA

Assignee:

Penn Engineering & Manufacturing Corp. - Danboro PA

International Classification:

B23P 1100

US Classification:

29243518

Abstract:

A two-tiered punch having an extending imprint head with impact surfaces is employed to deform the top threads of a clinch-type nut during installation to create a lock-type nut. As the deforming imprint is applied, a shoulder on the punch supplies the installation pressing force against the top face of the nut. As the imprint head moves downward into the material of the nut, portions of the top thread are deformed, being compressed axially downward. The size of the imprint head and the distance that the imprint head projects from the shoulder determines the depth of imprint deformation and, hence, the degree of thread deformation. The imprint head is centered on the nut thread and is configured in the shape of a polygon extending from the face of the punch. During deformation and installation, the nut is held in a center position with regard to the coining edges of the imprint head by a centering pin which extends from the end face of the punch. The distortion of the threads provides the desired prevailing torque against a thread-in bolt.

US Patent:

51658283, Nov 24, 1992

Filed:

Aug 12, 1991

Appl. No.:

7/743701

Inventors:

Richard C. Green - Hatboro PA
Glen J. Pierson - Telford PA
Kenneth A. Swanstrom - Doylestown PA

Assignee:

Penn Engineering & Manufacturing Corp. - Danboro PA

International Classification:

B23G 118

US Classification:

408129

Abstract:

An electronic thread tapper includes a cam-operated feed mechanism which drives the tap carriage rigidly in the advance direction only. Separate force means are employed to move the carriage in the retract direction when the tap is being withdrawn from the work material. Spindle and feed motors operate separately, but are cycle-coordinated during a dwell period between tapping strokes. By measuring any position error developed between the spindle and feed positions, a fault condition, such as a worn tap, a workpiece material defect, or an obstruction in the machine can be sensitively detected.

US Patent:

53381394, Aug 16, 1994

Filed:

Oct 20, 1993

Appl. No.:

8/138090

Inventors:

Kenneth A. Swanstrom - Doylestown PA

Assignee:

Penn Engineering & Manufacturing Corp. - Danboro PA

International Classification:

F16B 2118
F16B 3900

US Classification:

411353

Abstract:

A panel fastener includes a smooth-surface cylindrical shroud encompassing the periphery of the screw head. The shroud is freely rotatable about the shank of the screw and has sides extending down around the barrel which is affixed to a panel. The shroud is fitted to the screw by an internal flange which is yieldably held between the underside of the screw head and the end of a spring. The top edge of the protective shroud does not extend above the head of the screw. The components are dimensioned so that the sides of the shroud are held away from the top side of the panel when the screw is fully compressed. The fastener may be press-fit into a panel as an assembled unit by applying ram pressure to the top of the screw assembly and barrel.