John A Schultz

US Patent:

39700097, Jul 20, 1976

Filed:

Sep 24, 1973

Appl. No.:

5/399918

Inventors:

John C. Schultz - Buffalo NY

Assignee:

Houdaille Industries, Inc. - Buffalo NY

International Classification:

B61F 308
B61F 516
B61F 524
B61F 538

US Classification:

105164

Abstract:

A railroad passenger car suspension system in which a car body is supported on trucks in the running mode through rotary hydraulic actuators. All of the necessary conditions for passenger comfort, increased train speed and safety are met. The level of centrifugal force at curves is sensed and the car tilted so that the direction of force is felt by the passengers in a comfortable manner. Flush floor level of the car with station platforms, regardless of passenger load, wheel wear or platform level is attained. Lowered spring rate in the suspension system provides improved ride characteristics. Means are provided for steering the car trucks.

US Patent:

44321163, Feb 21, 1984

Filed:

Jul 19, 1983

Appl. No.:

6/514852

Inventors:

John C. Schultz - Buffalo NY

Assignee:

Houdaille Industries, Inc. - Ft. Lauderdale FL

International Classification:

B60B 3300

US Classification:

16 35D

Abstract:

A viscous rotary damper adapted to attenuate shimmy of a rotary member such as a caster relative to an associated member such as a wheelchair leg, comprises a pair of relatively rotatable annular portions having structure for respective attachment to the members. The damper portions have annular cooperative working surfaces of substantial length defining therebetween a shear film space gap working chamber which is closed at opposite ends by dynamic seals and has a viscous damping medium substantially filling the working chamber gap and providing viscous shear coupling yieldably resisting relative rotary movements of the working surfaces. The damper is adapted to be in a miniaturized form comprising a stator ring and a rotor housing, the stator ring being arranged to be keyed to one of relatively rotary members and the rotor being arranged to be keyed to the other of relatively rotary members.

US Patent:

44322542, Feb 21, 1984

Filed:

Mar 23, 1981

Appl. No.:

6/246901

Inventors:

John C. Schultz - Buffalo NY

Assignee:

Houdaille Industries, Inc. - Ft. Lauderdale FL

International Classification:

F16F 1510

US Classification:

74574

Abstract:

A viscous damper which has any one or more of three main features, namely at least one of a rotor and housing being formed from rigid plastic material, a bearing projection on one housing portion extending from the plane of the housing working surface less than shear film spaced relation toward the working surface of the rotor member, and means for closing a filler opening through the housing comprising a sealing disk engaging on a shoulder across the opening and a retainer pressing the disk onto the shoulder and having radial retaining teeth, retainingly engaging a wall about the opening.

US Patent:

45054584, Mar 19, 1985

Filed:

Nov 3, 1982

Appl. No.:

6/438748

Inventors:

John C. Schultz - Buffalo NY

Assignee:

Houdaille Industries, Inc. - Ft. Lauderdale FL

International Classification:

B60G 1300
B60G 1500
F16F 900
F16F 1100

US Classification:

267 9B

Abstract:

A linear stroke friction damped device adapted for resetting relatively moveable mechanism members by biasing spring action. Unidirectional resetting or multi-directional resetting are provided for. Displacement of the mechanism members attached to the device results in biasing spring loading and concurrent progressively increasing frictional damping as stroking movement of the device progresses toward end of stroke.

US Patent:

44113412, Oct 25, 1983

Filed:

Mar 17, 1981

Appl. No.:

6/244808

Inventors:

John C. Schultz - Buffalo NY

Assignee:

Houdaille Industries, Inc. - Fort Lauderdale FL

International Classification:

F16F 914
F16D 5702

US Classification:

188310

Abstract:

Relative motion between movable parts is damped by way of a hydraulic damper having radial vanes in a hydraulic damping fluid filled working chamber and dividing the chamber into subchambers which respectively increase and decrease in volume in response to torsional movements of the vanes in the working chamber during relative rotation of subassemblies of the damper. Damping is effected by controlled displacement of the hydraulic damping fluid between the subchambers through restricted orifices across an edge of the vanes during torsional movements of the vanes responsive to relative motion of the parts to be damped. Damping may be provided in either direction of rotation. Another level or no damping may be provided in the opposite direction of rotation. Substantially equal damping may be effected in both directions of rotation. A range of adjustments of the restricted orifices is provided for.