Paul Winther Hansen

US Patent:

55033822, Apr 2, 1996

Filed:

Feb 13, 1995

Appl. No.:

8/387672

Inventors:

Paul Hansen - Westminster CA
Sheldon F. Raizes - Palos Verdes CA
Michael D. Rumsey - Redondo Beach CA
William D. Barton - Rancho Palos Verdes CA
Keith Johnson - El Segundo CA

Assignee:

Xerox Corporation - Stamford CT

International Classification:

B65H 522

US Classification:

271 303

Abstract:

The thickness of a first sheet fed from each tray of the multi-tray sheet feeder is detected by a first sensor and a thickness value is placed in memory for that tray. Each sheet subsequently fed from the same tray is detected by the same sensor and the thickness value sensed is placed in memory and compared with the thickness value in memory for that tray. When a tray is reloaded, the thickness value in memory for the sheets previously loaded in the tray is erased and the first sheet fed from the reloaded tray is sensed and a thickness value for that sheet is placed in memory for the reloaded tray. After the thickness value of a sheet is sensed by the first sensor, the sheets enter into the intermediate tray. The thickness value of a sheet is detected by an outlet sensor as it leaves the intermediate sheet tray and that value is compared to the thickness value in memory which was detected for the same sheet by the first sensor. During the comparison steps, if the values match, then only one sheet has passed through a sensor.

US Patent:

57694079, Jun 23, 1998

Filed:

Jan 13, 1997

Appl. No.:

8/782325

Inventors:

Paul Hansen - Westminster CA

Assignee:

Xerox Corporation - Stamford CT

International Classification:

B65H 522

US Classification:

271 303

Abstract:

A sheet feed sensor is designed to have a first given voltage response condition for sensing sheets within a first range of paper weight values and a second given voltage response condition for sensing sheets within a second range of paper weight values. A current value supplied to the emitter of the sensor can be controlled to provide the desired voltage response or a resistance in a phototransistor collector circuit can be varied to provide the desired voltage response condition. If the first range of paper weight values is lighter than the second range of paper weight values, the sensor, when in the first given voltage response condition, will have a voltage response, when sensing a sheet of a given paper weight, which is higher than the voltage response when the same sensor senses a sheet of the same paper weight, when the sensor is in the second given voltage response condition. This way the difference between a voltage response at the phototransistor for a single sheet and a voltage response for two sheets, each of the same paper weight as the single sheet, fed through the sensor is large enough throughout all paper weight ranges to obviate the possibility of voltage response overlap.

US Patent:

39405940, Feb 24, 1976

Filed:

Aug 13, 1974

Appl. No.:

5/497097

Inventors:

Thomas M. Bleak - Whittier CA
Paul L. Hansen - Brea CA

Assignee:

Beckman Instruments, Inc. - Fullerton CA

International Classification:

G05B 700

US Classification:

2351501

Abstract:

An electronic process controller is disclosed having automatically bumpless operation. Changes such as transfer between manual and automatic modes, switching between set point sources and adjustment of control parameter values are all accomplished bumplessly with the aid of a settle circuit which adjusts the automatic control signal for bumpless switching while the manual memory freezes the process control signal at its last value before the change was initiated.

US Patent:

58365800, Nov 17, 1998

Filed:

Jan 13, 1997

Appl. No.:

8/782323

Inventors:

Paul Hansen - Westminster CA
Sheldon F. Raizes - Rancho Palos Verdes CA

Assignee:

Xerox Corporation - Stamford CT

International Classification:

B65H 344

US Classification:

271 913

Abstract:

A single tray or multi tray sheet feed system is provided. A sensor is provided to sense the sheets leaving from the single tray or multi tray system. If the paper weight of sheets of paper on a tray fall within a first range of paper weight values, the sensor is designed to have a first given voltage response condition for sensing these sheets and if the paper weight of the sheets falls within a second range of paper weight values the sensor is designed to have a second given voltage response condition for sensing the latter sheets. A current value supplied to the emitter of the sensor can be controlled to provide the desired voltage response or a resistance in a phototransistor collector circuit can be varied to provide the desired voltage response condition. If the first range of paper weight values is lighter than the second range of paper weight values, the sensor, when in the first given voltage response condition, will have a voltage response, when sensing a sheet of a given paper weight, which is higher than the voltage response when the same sensor senses a sheet of the same paper weight, when the sensor is in the second given voltage response condition. A voltage response value sensed by the sensor of the first sheet fed from a tray is stored in memory as the voltage response value for all sheets on that particular tray.

US Patent:

61834920, Feb 6, 2001

Filed:

Aug 27, 1998

Appl. No.:

9/141196

Inventors:

Charles C. Hart - Huntington Beach CA
Paul D. Hansen - Portland OR
Said Hilal - Laguna Niguel CA
Mark Ashby - Laguna Niguel CA
Lee L. Swanstrom - Portland OR
Bounsavanh Pravongviengkham - Corona CA
John R. Brustad - Dana Point CA

International Classification:

A61M 2900

US Classification:

606194

Abstract:

A catheter includes an introducer and a flow isolator adapted for disposition in a primary conduit to facilitate flow in the primary conduit while inhibiting flow and intersecting secondary conduits. The flow isolator may include a tubular mesh and surrounding balloon structure. Alternatively, a sleeve can be provided with a primary opening and a secondary opening which are sized to inflate the sleeve with the body fluid. Structures for deploying the sleeve between a low-profile state and high-profile state may include expandable fingers, or pneumatic chambers inflatable from an external source. In operation the sleeve can be forced by the body fluid against the intersection with the secondary conduits to achieve isolation. Alternatively, the pneumatic chambers can be inflated to form seals with the primary conduit. A blood filter or snare is contemplated to filter any blood clots which may develop around the flow isolator.

US Patent:

55867553, Dec 24, 1996

Filed:

Feb 13, 1995

Appl. No.:

8/387678

Inventors:

Paul Hansen - Westminster CA

Assignee:

Xerox Corporation - Stamford CT

International Classification:

B65H 700

US Classification:

271 906

Abstract:

The invention relates to an apparatus for detecting sheet misfeed from a tray having at least two sheets whose thickness differs from each other. The thickness of each sheet is detected as it enters into the tray and that value is placed in memory. The thickness of each sheet is detected as it leaves the tray and that value of each sheet is compared to the thickness value in memory for the same sheet when it entered into the tray. If the values match, then only one sheet has been fed from the tray. If the thickness value of the sheet as it leaves the tray is more that the thickness value in memory, then that indicates that more than one sheet has left the tray and a signal is produced which results in the sheet feed system being shut down to enable an operator to correct the situation.

US Patent:

58068430, Sep 15, 1998

Filed:

Jan 13, 1997

Appl. No.:

8/782324

Inventors:

Paul Hansen - Westminster CA
Sheldon F. Raizes - Palos Verdes CA

Assignee:

Xerox Corporation - Stamford CT

International Classification:

B65H 522

US Classification:

271 303

Abstract:

The sheets in each tray of a multi tray sheet feeder are of the same thickness, but the sheets in one tray may be of a different thickness than the sheets in another tray. The sheets are fed from each sheet feeder tray to an intermediate stacker and then to a printer. A first sensor is provided just prior to entry of a sheet into the intermediate stacker and a second sensor is provided to sense a sheet as it is fed from the intermediate stacker. If the paper weight of sheets of paper on a tray fall within a first range of paper weight values, each sensor is designed to have a first given voltage response condition when sensing those sheets and if the paper weight of the sheets falls within a second range of paper weight values each sensor is designed to have a second given voltage response condition sensing the latter sheets. A current value supplied to the emitter of a sensor can be controlled to provide the desired voltage response or a resistance in a phototransistor collector circuit can be varied to provide the desired voltage response condition. If the first range of paper weight values is lighter than the second range of paper weight values, each sensor, when in the first given voltage response condition, will have a voltage response, when sensing a sheet of a given paper weight, which is higher than the voltage response when the same sensor senses a sheet of the same paper weight, when each sensor is in the second given voltage response condition.

US Patent:

42765935, Jun 30, 1981

Filed:

Mar 30, 1979

Appl. No.:

6/025515

Inventors:

Paul L. Hansen - Brea CA

Assignee:

Beckman Instruments, Inc. - Fullerton CA

International Classification:

G06F 1546
G06F 1516
G06F 1116

US Classification:

364119

Abstract:

An automatic transfer method and apparatus for a multi-variable control unit having at least two process control units is disclosed which initiates transfer from the selected controller to the non-selected controller through failure of the selected controller to produce transfer preventing signals.