Tom Rudolph

US Patent:

6595314, Jul 22, 2003

Filed:

Dec 26, 2001

Appl. No.:

10/033641

Inventors:

Torben Juul - Sønderborg, DK
Tom Rudolph - Ames IA
Jørgen Clausen - Sønderborg, DK

Assignee:

Sauer-Danfoss Holding A/S - Nordborg

International Classification:

B62D 532

US Classification:

180419, 180406, 180442

Abstract:

A hydraulic steering system ( ) for a vehicle with two steering motor arrangements, particularly an articulated vehicle with wheel steering, with a hydraulic steering unit ( ) having a measuring motor section ( ), with a selection valve ( ), which connects an outlet (L, R) of the steering unit ( ) with either a first steering motor arrangement ( ) that preferably acts upon steered wheels, or a second steering motor arrangement ( ) that preferably acts upon a converting kit, and which is hydraulically operable via a pilot valve ( ), and with a pump ( ), which is connected with the steering unit ( ) and the pilot valve ( ). This permits the vehicle to be steerable in connection with an emergency.

US Patent:

6655492, Dec 2, 2003

Filed:

Dec 26, 2001

Appl. No.:

10/033618

Inventors:

Torben Juul - Sonderborg, DK
Tom Rudolph - Ames IA

Assignee:

Sauer-Danfoss Holding A/S

International Classification:

B62D 1300

US Classification:

180419, 180442

Abstract:

A steering system and a method for steering a vehicle, that has a wheel steering and an articulated steering. The steering system ( ) has a steering unit ( ), a first steering motor arrangement ( ), which acts upon steered wheels, a second steering motor arrangement ( ), which acts upon a converting kit, and a selection valve ( ), which connects the steering unit ( ) with either the first steering motor arrangement ( ) or the second steering motor arrangement ( ) in such a way that a steering will activate either the wheel steering or the articulated steering.

US Patent:

6684975, Feb 3, 2004

Filed:

Dec 26, 2001

Appl. No.:

10/033619

Inventors:

Tom Rudolph - Ames IA

Assignee:

Sauer-Danfoss Holding A/S

International Classification:

B62D 1300

US Classification:

180419, 180418

Abstract:

A method for steering a vehicle and a steering system ( ) comprises: a vehicle, with a first wheel steering arrangement ( ), and a second articulated steering arrangement ( ), a steering unit ( ) which is common for both steering ( ) arrangements and a sensor arrangement connected to a corrective device to sense a steering deflection of the second steering arrangement ( ). A dead band is monitored by the steering deflection of the second steering ( ) arrangement, a correction of the second steering ( ) being effected when leaving the dead band and activating the first steering arrangement ( ). The sensor arrangement has a dead band sensor ( ) on the second steering ( ), which is connected with a correcting device ( ), which supplies pressurised fluid to the second steering ( ) arrangements on leaving a predetermined dead band and activating the steering unit ( ).

US Patent:

7159525, Jan 9, 2007

Filed:

Jun 18, 2004

Appl. No.:

10/871962

Inventors:

Poul Henning Holm Pedersen - Soenderborg, DK
Tom Rudolph - Ames IA, US
Lee Mahlum - Ames IA, US
Radoslaw Kornicki - Soenderborg, DK
Bjarne Schmidt - Augustenborg, DK

Assignee:

Sauer-Danfoss ApS - Nordborg

International Classification:

B63H 25/22
B63H 5/125

US Classification:

114150, 440 61 S, 60325

Abstract:

The invention concerns a hydraulic steering arrangement with a steering motor, a supply path between a pressure source and the steering motor, in which supply path a throttling device and a measuring motor are located, a return path between the steering motor and a pressure sink, in which return path a return throttle is located, and a bypass path, which connects the supply path and the return path on the pressure source end or the pressure sink end, respectively, and which has a bypass throttle. It is endeavoured to make such steering arrangements suitable for fast motorboats. For this purpose it is ensured that with a load on the steering motor the pressure drop over the bypass throttle is larger than the sum of the pressure drops between a point before the first throttle and a point after the last throttle of the throttling device.

US Patent:

20020092697, Jul 18, 2002

Filed:

Dec 26, 2001

Appl. No.:

10/033287

Inventors:

Torben Juul - Sonderborg, DK
Tom Rudolph - Ames IA, US
Jorgen Clausen - Sonderborg, DK

International Classification:

B62D013/00

US Classification:

180/418000

Abstract:

A steering system () for a vehicle with a first steering arrangement (), with a first sensor (), with a second steering arrangement (), which includes an articulated steering, which has a second sensor (), and with a steering unit (). To improve the steering comfort, the steering unit () is fixedly connected with the first steering arrangement () and the second steering arrangement () is connected with a follow-up arrangement, which comprises the first sensor (), a control device () and a valve arrangement ().