RONALD P KRAHE
Engineers in Girard, PA

6644837, Nov 11, 2003

Mar 11, 2002

10/095229

Richard L. Borders - Cincinnati OH
Dennis C. Coon - Erie PA
Ronald P. Krahe - Girard PA
John M. Bulko - Apex NC

Hill-Rom Services, Inc. - Batesville IN

F21V 2108

362399, 362294, 362295, 362804, 362373, 362285, 362287, 362269

A surgical lighthead includes a reflector, a lens coupled to the reflector, and a handle located adjacent the lens. The handle defines an air passage to facilitate installation of a shield over the handle. A lamp assembly includes a support and at least one bulb located on the support between the reflector and the lens. Tubes are mounted in an interior region of the lighthead between the reflector and the lens, and rods are configured to engage the support. Each rod extends through the support and into a corresponding tube. The rods include at least one threaded portion configured to secure the lamp assembly within the interior region. The rods are slidable relative to the tubes upon disengagement of the threaded portions of the rods to permit the lamp assembly to move out of the interior region of the lighthead. The rods include stops to prevent separation of the lamp assembly from the lighthead. A controller turns the bulb on and off and adjusts the intensity level of light emitted from the bulb.

6402351, Jun 11, 2002

Mar 30, 1998

09/050534

Richard L. Borders - Cincinnati OH
Dennis C. Coon - Erie PA
Ronald P. Krahe - Girard PA
John M. Bulko - Apex NC

Hill-Rom Services, Inc., - Batesville IN

F21V 2300

362395, 362399, 362804

A surgical light apparatus comprising a lighthead coupled to an arm adapted for mounting to a surface of a surgical room, and wherein the lighthead has a sterile field at an outlet end thereon, and with a bulb located within the lighthead, a controller coupled to the bulb, and an actuator coupled to the controller to adjust an intensity of light of the bulb itself, and wherein the actuator is located in the sterile field on the lighthead.

6680464, Jan 20, 2004

Jul 30, 2001

09/918309

Ronald P. Krahe - Girard PA

Zurn Industries, Inc. - Erie PA

H05B 348

219544, 219201, 219485, 219535, 1562742

A piping system that includes a plurality of pipe made of thermoplastic material, a coupling and an arrangement for securing the pipe to the coupling. The coupling is configured so that either a fusable seal or mechanical seal can be used with the coupling to connect the pipe to the coupling with an electrofusion joining control device. Preferably, the pipe and coupling are made of thermoplastic material.

4687635, Aug 18, 1987

Oct 5, 1984

6/658396

Kristine M. Kaehler - Erie PA
Ronald P. Krahe - Girard PA
Peter T. Miraldi - Erie PA
Richard A. McBride - Erie PA

American Sterilizer Company - Erie PA

A61L 220

422 26

A steam sterilization cycle having a conditioning stage, a sterilizing stage, a drying stage and an air admission stage which provides maximum removal of entrapped air from full or partial porous loads. The conditioning stage includes a plurality of pressure/vacuum pulses. The final vacuum pulses are deeper than the initial pulses. The sterilizing stage includes a diffusion dwell come-up which gradually increases the temperature and pressure of the chamber to the predetermined sterilization temperature by a sequence of pressure rises followed by pressure plateaus which permit substantially complete steam penetration of the load and substantial equalization of the actual load temperature and the temperature sensed by the sterilizer controls and substantially eliminates superheating the chamber. The cycle may also include a step for detecting and reacting to unacceptable levels of noncondensable gas present in the chamber during the sterilization stage.

4261950, Apr 14, 1981

Feb 6, 1979

6/009816

Richard C. Bainbridge - McKean PA
Ronald P. Krahe - Girard PA

American Sterilizer Company - Erie PA

A61L 208

422 26

Sterilizing apparatus and control arrangement providing for selective operation of a plurality of differing types of sterilizing units including sterilizers capable of carrying out a plurality of differing steam and/or gas sterilizing cycles are disclosed. An electronic microcomputer controller is provided on a plurality of circuit boards, at least one of which is an integrated complete controller for at least one type of sterilizer; expander circuit boards extend control to remaining differing types of sterilizers. Also, provision is made for automatically identifying each differing type of sterilizer upon interconnecting an integrated control system with a selected sterilizer.

4909988, Mar 20, 1990

Oct 23, 1987

7/113090

Robert W. Childers - Erie PA
Thomas G. Cook - Fairview PA
David A. Karle - McKean PA
Ronald P. Krahe - Girard PA
George E. Sparber - Linesville PA
Gerald L. Yeaney - Erie PA

American Sterilizer Company - Erie PA

A61L 206

422 26

A self-contained, closed loop steam sterilizer has an integral external boiler. The sterilizer employs a prevacuum sterilization cycle with a dwell phase to promote steam efficiency. A single pump accomplishes all pumping functions in a prioritized manner.

4808377, Feb 28, 1989

Jul 26, 1985

6/759539

Robert W. Childers - Erie PA
Thomas G. Cook - Fairview PA
David A. Karle - McKean PA
Ronald P. Krahe - Girard PA
George E. Sparber - Linesville PA
Gerald L. Yeaney - Erie PA

American Sterilizer Company - Erie PA

A61L 206

422 26

A self-contained, closed loop steam sterilizer having an integral external boiler. The sterilizer employs a prevacuum sterilization cycle with a dwell phase. A single pump accomplishes all pumping functions in a prioritized manner.