David C Heidenreich, 801916 Canterbury Rd, Akron, OH 44333

6874606, Apr 5, 2005

Oct 30, 2003

10/696206

David C. Heidenreich - Akron OH, US

Power Transmission Technology, Inc. - Sharon Center OH

F16D007/02
F16D025/04
F16D043/284

192 5631, 192 88 A, 192 91 A, 192104 F, 464 48

A torque limiting clutch or coupler is provided for implementation between input and output shafts. A spring biased friction stack assembly establishes a characteristic breakaway torque of the unit. A torque modifying plate is fixed to a pressure plate and, in conjunction with an end plate, defines a ring-like cavity having a bladder therein filled with a fluid. As the torque limiting clutch or coupler begins to rotate, the fluid within the bladder is forced outwardly by centrifugal force and, as the speed increases, the restriction on the fluid radially causes it to begin to move axially, causing the pressure plate to act against the spring bias in one embodiment and to supplement the spring bias in another embodiment, regulating the characteristic breakaway torque as a function of rotational speed.

6874610, Apr 5, 2005

Mar 27, 2003

10/400827

David C. Heidenreich - Akron OH, US
Robert E. Herchick - Copley OH, US

Power Transmission Technology, Inc. - Sharon Center OH

F16D013/52

192110B, 192 702, 192 85 AA, 192112

A compact dry power takeoff clutch unit is adapted for interconnection with a flywheel of an engine. A housing is adapted for attachment to the engine and has a plurality of interleaved friction and separator disks maintained therein. A drive ring is connected to the friction disks and to the flywheel for driving the friction disks by the engine. An output shaft is interconnected with the separator disks. A pair of anti-friction bearings are received by the housing and provide the sole support for the output shaft. A pressure plate is configured to be nestingly received by a cup-shaped flywheel in order to maintain certain standardized dimensional constraints. Actuation of the clutch is achieved by a rotary union interposed between the pair of support bearings. A quiescent position for the separator disks is achieved by the mounting of the separator disks between the head and spring of shoulder bolts secured to an output hub mounted upon the output shaft. Gland rings are interposed about the output shaft on either side of the rotary union to minimize leakage and the passage of pressurized actuating fluid to the bearings.

7281371, Oct 16, 2007

Aug 23, 2006

11/509433

David C. Heidenreich - Akron OH, US

EBO Group, Inc. - Sharon Center OH

F16D 31/02

60398

A compressed air pumped hydro energy storage and distribution system includes a first reservoir of water and a second reservoir of air and water. An air pressure source, connected to the second reservoir, develops a pressure head in the second reservoir. A pump/turbine-motor/generator, received by the first reservoir, is connected to a regional energy grid. During peak demand periods, the pressure head forces water through the pump/turbine-motor/generator to generate power, delivered to the grid. During low demand periods, the pump/turbine-motor/generator pumps water back to the second reservoir, regenerating the pressure head. A third air reservoir interconnected with the second reservoir and a gas turbine generator can be used to generate power during peak demand periods. The reservoirs can be tunnels or abandoned mines, reinforced and sealed by pressure grouting and/or an internal liner, maintained well beneath the earth's surface and intersecting the path of the grid.

7472739, Jan 6, 2009

Oct 29, 2004

10/977749

David C. Heidenreich - Akron OH, US

PT Tech, Inc - Sharon Center OH

E06B 9/08

160122, 160 68, 160265

Shade structures include awning fabrics carried by awning rolls from which they may be extended to provide shade to areas, and into which they may be retracted when shade is not needed. Closed systems are disclosed in which one or more awning fabrics can be extended through a single drive system. In particular embodiments, the shade structures cover large surface areas and include solar cells for the generation of photovoltaic power.

7576282, Aug 18, 2009

May 30, 2006

11/442564

David C. Heidenreich - Akron OH, US

EBO Group, Inc. - Sharon Center OH

H01L 25/00
H01L 31/00
H01L 31/042
H02N 6/00
E04F 10/06

136244, 136243, 136245, 160 66

A photovoltaic awning assembly includes a sheet of material carrying photovoltaic strips thereon. A rotatable roll receives the sheet of material and has a contoured drum at opposite ends thereof for deploying and retrieving the sheet of material through the use of a cable connected to a boom at an opposite end of the sheet. A pair of support tubes extend along opposite sides of the sheet of material, and support legs serve to position the sheet. In one embodiment of the invention, one of the support legs is out of plane with the others, introducing a saddle surface in the sheet of material to provide it with stability to resist wind. The roll for retrieving and maintaining the material is constructed of a non-metallic material such as corrugated fiberglass sheet, rolled about take-up drums at opposite ends thereof, and having reinforcing flanged disks in the interior thereof. The corrugations provide conduits for the passage of electrical conductors to an externally maintained control box. Retracting of the awning sheet is facilitated by means of a spring maintained in side rails that is loaded when the awning is deployed, and which assists in the retraction of the awning, when required.

2006003, Feb 16, 2006

Aug 13, 2004

10/917336

Joseph Guinter - Bay Village OH, US
Robert Herchick - Copley OH, US
David Heidenreich - Akron OH, US

F16D 25/0638

1920850AA, 192070130

A hydraulic dry power take-off clutch is adapted to be retrofit for prior manually actuated dry over-center power take-offs in compliance with certain SAE specifications. Both the resultant clutch and a retrofit kit for effecting the same are presented. According to the invention, an input hub is securedly received upon a shaft with an end plate secured to the input hub. A drive flange is adapted for securement to a flywheel or power source. A hydraulically actuated clutch disk assembly is received by the input hub and is in interconnection with the dry flange. Finally, a rotary union is received upon an end of the input hub opposite that of the clutch disk assembly, the rotary union providing a conduit for passing pressurized hydraulic fluid to the clutch disk assembly. The entire structure is adapted to be received within the same bell housing, and to employ the same drive ring as the prior art dry over-center power take-off units.

2009001, Jan 15, 2009

Jul 11, 2007

11/827182

David C. Heidenreich - Akron OH, US

E04F 10/06
H01L 31/042

160 66, 136246

A deployable and retractable photovoltaic awning assembly is formed from a flexible sheet of photovoltaic devices attached to a rotatable roll at one end and a boom at the other. A pair of side support tubes are provided with tracks that receive slides maintained on opposite ends of the boom. At least one of the slides is axially movable with respect to the boom, ensuring engagement of the slides in the tracks as the boom is moved away from and toward the roll during deployment and retraction of the flexible sheet. In this regard, the slides are mounted on pins through articulated joints of the spherical/universal type. The sheet of flexible voltaic devices is preferably transmissive as to light wave lengths in the range required for vegetation photosynthesis, and absorbert for all other ranges, allowing the awning to be deployed over vegetated areas, without interference with the photosynthesis process. Moreover, the awning may be retractable in periods of rain or the like, ensuring that the vegetation is properly and naturally attended.

2010001, Jan 21, 2010

Feb 2, 2009

12/363981

DAVID C. HEIDENREICH - Akron OH, US
Steven A. Caskey - North Lawrence OH, US

B60W 10/08
H02K 9/19
H02K 7/116
F16H 63/08
B60W 20/00

180 65265, 310 54, 310 83, 7447311, 903909

An oil cooled electric drive module for hybrid vehicles includes an AC motor assembly having a shaft parallel to an output shaft, with the shafts being interconnected by a set of helical reduction gears. The motor shaft is provided with a rotary union for cooling oil that passes first axially and then radially through the shaft to an outer circumferential surface thereof beneath the core of a rotor attached thereto. The cooling oil passes beneath the rotor to the outer ends thereof, where annular deflectors disburse the oil to provide a coanda effect over the shorting rings of the rotor, onto the stator windings, and thence onto the motor housing for return to a cooling sump, which may include hydraulic and electric pumps for further desired cooling circulation. The invention also includes solenoid valves for shifting a splined collar between positions of interconnection and disconnection between the motor shaft and output shaft. The module of the invention is adapted for interpositioning within the drive shaft of a motor vehicle, with the output shaft of the module being connected at opposite ends to the vehicle drive shaft. The module is employed in various drive systems employing segmented shafts and multiple gear ratio clutch and gear assemblies. The clutch assemblies are of the dog type, and are spring loaded with a neutral position, hydraulic cushioning and synchronized control. The clutch assemblies operate for various interconnections between the various segments of a drive shaft and the shafts of one or more motor/generators.