KEITH H CARPENTER
Engineering in Dayton, OH

5284405, Feb 8, 1994

Dec 27, 1991

7/814358

Keith H. Carpenter - Centerville OH

Systech Environmental Corporation - Xenia OH

B65G 5352

406194

A method and apparatus for injecting sludge into a kiln includes a pump for pumping sludge, a conduit for conveying sludge to the kiln including an attrition portion for attriting the sludge into smaller particles, and a conduit enclosing the attrition segment for entraining the particles in a stream of combustion air to carry the particles into a kiln. The attrition portion includes a plurality of passageways connected to a source of compressed air to provide a plurality of jets of air to attrite the sludge into discrete particles and aid in ejecting the sludge from the conduit. In a preferred embodiment, the attrition segment includes nested, frusto-conical segments; each having a plurality of passageways which project jets of compressed air radially inwardly to slice the sludge mass within the segment into smaller particles. As the particles exit the attrition segment, they enter an extension tube having a helical internal rib which imparts a swirling motion to the particles. The particles then become entrained in combustion air flowing from an air conduit enclosing the attrition segment and are carried into the kiln in a shaped cloud.

4742257, May 3, 1988

Jan 29, 1987

7/008233

Keith H. Carpenter - Kettering OH

General Motors Corporation - Detroit MI

H02K 900

310 62

An induction motor comprises a stator and rotor totally enclosed in a case with no air communication through the case, an internal shaft mounted fan at each end of the rotor and an external fan and fan shield at one end to direct cooling air along the outer surface of the case. The motor is further provided with hollow, toroidal baffles internally at each end which force the air within the case at each end of the motor to be circulated across the bearing and ends of the windings to pick up heat and along the internal surface of the case to exchange the heat through the case with the fan driven outside air. A further improvement is the provision of an air channel from the fan shield along the outer surface of the case to the other end of the motor and radial ducts from the channel to the interior of the baffle and from the opposite side of the baffle to the case, whereby a portion of the fan driven external cooling air is forced through the interior of the driving end baffle. Another improvement is the provision of a lower axially extending inlet duct and an upper radially extending outlet duct for the fan end baffle for air to be driven therethrough by the external fan.

4520908, Jun 4, 1985

Nov 10, 1983

6/550564

Keith H. Carpenter - Kettering OH

General Motors Corporation - Detroit MI

F16F 950, F16F 946

188319

To assure adjustability under all internal pressure conditions a hydraulic damper having a hollow piston rod, a piston on the end of the rod slidable in a fluid filled tube and cooperating with the latter in defining inversely variable volume compression and rebound chambers, and at least two relief valves on the piston connected to the compression chamber for passing fluid thereto at two different levels of pressure relief, includes a right cylindrical valve spool in the piston rod bore rotatable between a plurality of control positions corresponding to pressure relief at the different relief pressure levels, first passages between the rebound chamber and the piston rod bore, second passages between each of the relief valves and the piston rod bore, first circumferentially symmetrically arrayed ports in the valve spool registerable with the first passages to always connect the rebound chamber to the valve spool, second circumferentially symmetrically arrayed ports in the valve spool to selectively connect respective ones of the relief valves to the valve spool, and a hollow tube through the valve spool open to the compression chamber to equalize pressure on opposite ends of the valve spool.

4248383, Feb 3, 1981

Oct 9, 1979

6/083103

Jack W. Savage - Centerville OH
Keith H. Carpenter - Kettering OH

General Motors Corporation - Detroit MI

B60S 146

239284A

A washer system for transparent surfaces such as headlamp lenses and windshields has a liquid delivery chamber of a predetermined volume which is supplied with liquid through a one-way valve from a liquid storage chamber having a larger predetermined volume. The liquid in the delivery chamber is expelled from the chamber through passages and nozzles by air pressure which is stored at high pressure in an accumulator. The air in the accumulator is controlled for selective delivery by the operator. The accumulator is replenished with air automatically by an air compressor. A pneumatic delivery passage is connected between the top of the liquid delivery chamber and the nozzle passages to assist in exhausting the liquid in the passages through the nozzles and after the liquid is expended to permit air in the chamber to escape during refilling of the chamber with liquid.

4642502, Feb 10, 1987

Apr 24, 1986

6/855344

Keith H. Carpenter - Kettering OH
Jon E. Miller - Spring Valley OH
John W. Murphy - Kettering OH

General Motors Corporation - Detroit MI

H02K 118

310156

A dynamoelectric machine has a rotor or stator which comprises a core with axial groups of flat, rectangular magnet mounting surfaces, each successive magnet mounting surface of a group being circumferentially offset by a common angle of axial rotation from the previous magnet mounting surface. A magnet is mounted on each magnet mounting surface; and each magnet has a flat surface for mounting and an opposing arcuate surface to help form a cylindrical surface. Each of the magnets has the shape, when viewed radially, of a parallelogram forming a skew angle with the axis corresponding with the rotational offset of the magnet mounting surfaces to define skewed slots between skewed magnetic poles extending the substantial axial length of the core. The core may comprise polygonal lamina with the flat polygon sides grouped to form the magnet mounting surfaces; or it may comprise circular lamina with a non-magnetic sleeve having the magnet mounting surfaces. The latter provides a larger but more even air gap.

4431954, Feb 14, 1984

Nov 26, 1982

6/444798

Keith H. Carpenter - Kettering OH
Donald E. Graham - Centerville OH
James J. Kowalik - West Carrollton OH

General Motors Corporation - Detroit MI

H02P 104

318443

Windshield wiper apparatus for a motor vehicle includes a first wiper pivoted below the driver side of the windshield and capable of wiping an arc between the bottom center and the driver side end thereof, a second wiper pivoted to the passenger side of the pivot of the first and capable of wiping an arc between the bottoms of the driver and passenger sides thereof, said arcs having a substantial portion of overlap on the driver side, first and second motors effective to drive the first and second wipers at substantially similar speeds and control apparatus having a mode of operation in which it is effective to drive the wipers in tandem from the bottom of the windshield to the end of the arc of the first wiper at the driver end of the windshield, hold the first wiper in that position while driving the second wiper to the bottom of the driver side and back and then drive both wipers in tandem back to the starting point. Thus the overlapping portion of the arcs receives additional wipes and is positively cleared on each wipe.

4452541, Jun 5, 1984

Sep 3, 1982

6/414900

Keith H. Carpenter - Kettering OH

General Motors Corporation - Detroit MI

F16C 1708, F16C 2708

384223

Shaft endplay reducing apparatus for a dynamoelectric machine includes a sheet of resilient material held only by its edges in the machine stator apparatus adjacent one end of the armature shaft. A hardened thrust bearing member is supported by the sheet in abutment with the end of the armature shaft. The sheet of resilient material has low noise transmissibility in tension to reduce noise transmitted from the armature or thrust bearing member to the stator apparatus for radiation to the environment.

5076179, Dec 31, 1991

Jul 13, 1990

7/554053

Keith H. Carpenter - Kettering OH

Systech Environmental Corp. - Xenia OH

F23D 102

110264

A method and apparatus for injecting sludge into a kiln includes a pump for pumping sludge, an attrition segment for attriting the sludge into smaller particles, and a conduit enclosing the attrition segment for entraining the particles in a stream of compressed air to carry the particles into a kiln. In the preferred embodiment, the attrition segment includes a perforated member, preferably comprising a plurality of perforated tubes which project jets of compressed air radially inwardly to slice the sludge mass within the segment into smaller particles. As the particles exit the attrition segment, they become entrained in a stream of compressed air flowing through the air conduit enclosing the attrition segment and are carried into the kiln.