Christopher D Philipp

US Patent:

7147352, Dec 12, 2006

Filed:

Jun 23, 2003

Appl. No.:

10/601716

Inventors:

Christopher Donald Philipp - Portage MI, US

Assignee:

Howmedica Leibinger, Inc. - Kalamazoo MI

International Classification:

F21S 13/10

US Classification:

362363, 362800, 257 98

Abstract:

A light emitting device includes a hollow truncated spherical housing having an inner surface and an outer surface. The housing is substantially transparent. A light source, that generates a plurality of light rays, is positioned with respect to the housing to minimize an angle of incidence associated with each of the plurality of rays as they intersect the inner surface of the housing thereby minimizing the refractive effects of the housing as the rays of light generated by the light source pass through the housing.

US Patent:

7638958, Dec 29, 2009

Filed:

Jun 21, 2006

Appl. No.:

11/472012

Inventors:

Christopher Philipp - Portage MI, US
Don Malackowski - Schoolcraft MI, US

Assignee:

Stryker Corporation - Kalamazoo MI

International Classification:

H02P 1/00

US Classification:

318139, 318114, 318647, 318652, 318671

Abstract:

A powered surgical tool with a housing that contains a power generating unit such as a motor. A control module is disposed in a shell that is mounted in the housing. The control module contains a control circuit for regulating the actuation of the power generating unit. The power generating unit emits a signal representative of the operating state of the unit that is transmitted through the structural material forming the shell. Also internal to the control module shell is a sensor that monitors the signal emitted by the power generating unit. This signal output by the sensor is applied to the control circuit. The control circuit, based on the sensor signal regulates actuation of the power generating unit. Wherein the power generating unit is a motor, the signal emitted is the magnetic field that varies with rotor position. The sensor monitors the strength of this field.

US Patent:

51874229, Feb 16, 1993

Filed:

Jul 31, 1991

Appl. No.:

7/738526

Inventors:

John M. Izenbaard - Vicksburg MI
Christopher D. Philipp - Portage MI
Michael W. Steffler - Kalamazoo MI

Assignee:

Stryker Corporation - Kalamazoo MI

International Classification:

H02J 700
H01M 1046

US Classification:

320 2

Abstract:

A battery charger for alternately receiving batteries having substantially different charging rate requirements in which the charger has contacts engaged by a battery pack to be recharged, for the purpose of carrying out such recharging. A difference in at least one of the charger contacts is engageable by one of the high and low charge rate battery packs, but not the other. Whether or not that one charger contact is engaged by a battery pack causes the battery charger to supply charging current at different levels to automatically charge such high and low charge rate battery packs at corresponding high and low charge rates.

US Patent:

50935933, Mar 3, 1992

Filed:

Dec 18, 1990

Appl. No.:

7/629234

Inventors:

Christopher D. Philipp - Kalamazoo MI

Assignee:

Stryker Corporation - Kalamazoo MI

International Classification:

H02K 326
H02K 3704
H02K 714

US Classification:

310 71

Abstract:

A dc permanent magnet motor for a surgical handpiece, comprises a housing and a stator including windings fixed in the housing. A rotor is supported for rotation in the housing and has a forward extending rotatable shaft. A conventional sensor adjacent the windings and rotor has stiff conductive electrodes extending rearward. A printed circuit board disk has plural axial holes along the perimeter thereof defining conductive sockets into which the electrodes plug, which disk is located coaxially rearward of said rotor and windings and is fixed with respect to the housing. A rear-facing, separable connector holder behind the printed circuit board has terminals rear-facing therefrom for connection to an external electrical supply. The holder is fixed with respect to the housing. Electrical connections are effected between the conductive sockets of the printed circuit board and the rear-facing terminals of the holder.

US Patent:

52686221, Dec 7, 1993

Filed:

Mar 22, 1993

Appl. No.:

8/034277

Inventors:

Christopher D. Philipp - Portage MI

Assignee:

Stryker Corporation - Kalamazoo MI

International Classification:

H02P 602
G05F 1567

US Classification:

318254

Abstract:

A compact surgical handpiece comprises a motor energizable for moving a tool member, electric energy supply actuable for energizing the motor and a manually actuable trigger actuable to control motor operation. A motor control circuit interconnects the motor electric energy supply and trigger for running and braking the motor in response to actuation and release of the trigger. The control circuit includes a compact regulated voltage supply, a motor overcurrent limiting feature and a motor braking feature which is effective even if the operator fails to fully disconnect the electrical supply to the motor upon releasing the trigger.

US Patent:

55848389, Dec 17, 1996

Filed:

Feb 28, 1994

Appl. No.:

8/203664

Inventors:

Mehmet Rona - Cambridge MA
Douglas J. Ely - Chelsea MA
James A. Evans - Portage MI
Matthew S. Alves - Kalamazoo MI
Lisa D. Sertic - Portage MI
Christopher D. Philipp - Kalamazoo MI

Assignee:

Stryker Corporation - Kalamazoo MI

International Classification:

A61B 1756
B23B 4900
G01R 3302

US Classification:

606 96

Abstract:

A femoral nail which can be implanted in a bone has a transverse hole, and an arrangement is provided for generating a magnetic field which has a maximum strength along an axis of the transverse hole and which decreases in strength in directions radially away from the axis. A drill guide for axially aligning a drill with the transverse hole has an axial drill opening through it, and first and second sensor arrangements are provided at axially spaced locations on the drill guide and each have a plurality of sensors which are at angularly spaced locations and are spaced radially from the opening through the drill guide. An arrangement responsive to the first and second sensor arrangements detects a deviation of the drill opening in the drill guide from coaxial alignment with the axis of the hole in the member, and provides an operator perceptible indication of a radial direction from the drill opening to the axis.

US Patent:

51362201, Aug 4, 1992

Filed:

Jun 27, 1991

Appl. No.:

7/722017

Inventors:

Christopher D. Philipp - Portage MI

Assignee:

Stryker Corporation - Kalamazoo MI

International Classification:

H02P 308

US Classification:

318362

Abstract:

A compact surgical handpiece comprises a motor energizable for moving a tool member, electric energy supply actuable for energizing the motor and a manually actuable trigger actuable to control motor operation. A motor control circuit interconnects the motor electric energy supply and trigger for running and braking the motor in response to actuation and release of the trigger. The control circuit includes a compact regulated voltage supply, a motor overcurrent limiting feature and a motor braking feature which is effective even if the operator fails to fully disconnect the electrical supply to the motor upon releasing the trigger.

US Patent:

52352617, Aug 10, 1993

Filed:

Apr 16, 1992

Appl. No.:

7/869627

Inventors:

Christopher D. Philipp - Portage MI

Assignee:

Stryker Corporation - Kalamazoo MI

International Classification:

H02P 714

US Classification:

318504

Abstract:

A compact surgical handpiece comprises a motor energizable for moving a tool member, electric energy supply actuable for energizing the motor and a manually actuable trigger actuable to control motor operation. A motor control circuit interconnects the motor electric energy supply and trigger for running and braking the motor in response to actuation and release of the trigger. The control circuit includes a compact regulated voltage supply, a motor overcurrent limiting feature and a motor braking feature which is effective even if the operator fails to fully disconnect the electrical supply to the motor upon releasing the trigger.