DAVID JOSEPH HORVATH
Pilots at Seminole Rd, Cleveland, OH

2010017, Jul 8, 2010

Jan 7, 2009

12/349658

David Horvath - Euclid OH, US
Alex Massiello - Chesterland OH, US
Leonard A. R. Golding - Chagrin Falls OH, US
Barry Kuban - Avon Lake OH, US

CLEVELAND CLINIC FOUNDATION - Cleveland OH

A61M 31/00

604 67

A method is provided of controlling a pump including a electrical motor coupled to a rotor which carries first and second impellers at opposite ends thereof. The method includes: (a) driving the rotor using the motor, so as to circulate fluid from the first impeller through a first fluid circuit, the second impeller, a second fluid circuit, and back to the first impeller; (b) determining a resistance of the first fluid circuit, based on a first motor parameter; (c) determining a flow rate through the first fluid circuit based on a second motor parameter; and (d) varying at least one operational parameter of the pump so as to maintain a predetermined relationship between the flow rate and the resistance of the first fluid circuit.

2012020, Aug 9, 2012

Sep 8, 2010

13/394853

Jose L. Navia - Shaker Heights OH, US
Shengqiang Gao - Beachwood OH, US
Brian L. Davis - Moreland Hills OH, US
David J. Horvath - Euclid OH, US

A61F 2/24

623 211, 623 236

An apparatus is provided for delivering an implantable medical device to a diseased cardiac valve includes an elongated shank, a brace member, and a locking mechanism. The shank has a first end portion, a second end portion, and a first longitudinal axis extending between the end portions. The first end portion includes a rotatable annular lower support and a fixing member. The lower support includes an annular ring having oppositely disposed upper and lower surfaces and a plane extending radially between the upper and lower surfaces. The brace member includes a barrel portion operably connected to a drive system. The barrel portion includes a first end portion, a second end portion, and a second longitudinal axis extending between the end portions. The drive system includes a housing operably connected to an actuating handle. The locking mechanism is operably connected to the housing and the elongated shank.

6042352, Mar 28, 2000

Aug 12, 1998

9/132924

Jeffrey A. Halter - Chardon OH
David J. Horvath - Euclid OH
Nick J. Popovich - Euclid OH

Argo-Tech Corporation - Cleveland OH

F01C 2100

418189

A bearing for a gear pump including a bearing dam which has a surface, an inlet face relief located on the bearing dam, and a discharge face relief located on the bearing dam. A bearing dam wall is located between the inlet face relief and the discharge face relief and a bleed hole arrangement. The bleed hole arrangement includes a blind passage located on the discharge face relief, and a second passage positioned perpendicular to and connected to the blind passage. The second passage extends to the surface of the bearing dam. In an alternative embodiment, the second passage is of a stepped configuration. The bleed hole arrangement reduces cavitation on the bearing and gear surfaces by pulsing fuel into an inter-tooth volume formed between the gear teeth during gear rotation. The fuel is pulsed into the inter-tooth volume so as to introduce a small amount of fluid to reduce fluid accelerations and, hence, minimizing the formation of vapor cavities within the volume thus minimizing the amount of cavitation erosion on the gear teeth and bearing dams.

8210829, Jul 3, 2012

Mar 10, 2010

12/720953

David Horvath - Euclid OH, US
Leonard A. R. Golding - Chargrin Falls OH, US
Alex Massiello - Chesterland OH, US

The Cleveland Clinic Foundation - Cleveland OH

F04D 27/00, F04D 29/042, F04D 29/40, A61M 1/10

417350, 415131, 417359, 417420, 41742314, 623 313

A pump () includes a housing, a stator () supported in the housing, and a rotor assembly (). The rotor assembly () includes a rotor () supported in the housing for rotation relative to the stator () about an axis (). The rotor assembly () also includes a first impeller () operatively coupled to a first axial end of the rotor () for rotation with the rotor about the axis (). The rotor assembly further includes a second impeller () operatively coupled to a second axial end of the rotor (), opposite the first axial end, for rotation with the rotor about the axis (). The rotor assembly () is movable along the axis () relative to the housing to adjust hydraulic performance characteristics of the pump ().

2012032, Dec 27, 2012

Jul 2, 2012

13/540037

David Horvath - Euclid OH, US
Leonard A.R. Golding - Chagrin Falls OH, US
Alex Massiello - Chesterland OH, US
Barry Kuban - Avon Lake OH, US

F04D 13/06

417420

A pump includes a housing, a stator supported in the housing, and a rotor assembly including a rotor supported in the housing for rotation relative to the stator about an axis. The stator includes a stator core, a first lamination wound around an axial portion of the stator core, and a second lamination wound around a second axial portion of the stator core. The first and second laminations are spaced from each other along the length of the stator core. The rotor includes a rotor core, a first magnet assembly that extends around an axial portion of the rotor core, and a second magnet assembly that extends around a second axial portion of the rotor core. The first and second magnet assemblies are spaced from each other along the length of the rotor.

7189260, Mar 13, 2007

Mar 19, 2001

10/333760

David Horvath - Euclid OH, US
Leonard A. R. Golding - Auburn Township OH, US
William A. Smith - Lyndhurst OH, US

A61M 1/10

623 313, 600 16, 604 8, 623 31

In a centrifugal flow blood pump, usable in left ventricular assist applications, blood is pumped from an inlet () to an outlet () by a primary impeller (). A portion of the blood that enters the pump follows a secondary channel () where a secondary impeller () routes the blood to lubricate a bearing between an impeller assembly () and a post formed by a component of the pump housing. The unique shape of the secondary impeller () prevents blood stagnation and provides for a well-washed fluid bearing.

7704054, Apr 27, 2010

Apr 24, 2007

11/789205

David Horvath - Euclid OH, US
Leonard A. R. Golding - Chagrin Falls OH, US
Alex Massiello - Chesterland OH, US

The Cleveland Clinic Foundation - Cleveland OH

F04B 49/00, F03B 3/12, F04B 17/04, A61M 1/10

417213, 415131, 417247, 417286, 417350, 417359, 417420, 41742314, 623 313

A pump () includes a housing, a stator () supported in the housing, and a rotor assembly (). The rotor assembly () includes a rotor () supported in the housing for rotation relative to the stator () about an axis (). The rotor assembly () also includes a first impeller () operatively coupled to a first axial end of the rotor () for rotation with the rotor about the axis (). The rotor assembly further includes a second impeller () operatively coupled to a second axial end of the rotor (), opposite the first axial end, for rotation with the rotor about the axis (). The rotor assembly () is movable along the axis () relative to the housing to adjust hydraulic performance characteristics of the pump ().

8517699, Aug 27, 2013

Dec 16, 2008

12/336283

David Horvath - Euclid OH, US

Cleveland Clinic Foundation - Cleveland OH

F04B 35/04

4174101, 417321

A pump includes: (a) an elongated pump housing having first and second ends; (b) a primary impeller mounted in the housing for rotation about an axis, the impeller comprising a plurality of vanes whose outer tips define an impeller plane; (c) an inlet disposed in fluid communication with the primary impeller; and (d) an annular volute housing communicating with the primary impeller and with an outlet, where the volute housing is axially offset from the impeller plane.