TED LEE TEACH
Pilots at Kellenburger Rd, Dayton, OH

4526201, Jul 2, 1985

Nov 4, 1982

6/439057

Arthur H. Geyler - Dayton OH
Ted L. Teach - Dayton OH

Spectra-Physics, Inc. - Mountain View CA

F15B 13043

13762563

A four-way valve for selectively controlling the application of fluid and exhaust pressures to opposite sides of a double acting cylinder utilizes a main valve spool that is axially movable in a valve housing defining ports respectively connected to opposite sides of the cylinder and to the pressured and inlet sides of a fluid pressure source. The spool valve is provided with an axial bore and a pilot spool is mounted in such axial bore. Radial passages are provided in the main valve spool connecting its exterior with the axial bore and external sealing portions on the pilot spool cooperate with the radial port so that in a neutral position of both the main valve spool and the pilot spool, no fluid flow occurs. Upon axial shifting of the pilot spool in either direction from the neutral position, fluid pressure is applied to opposite ends of the main valve spool to cause it to follow the pilot spool and thus effect a connection between the outlet and inlet ports of the fluid pressure source and the appropriate side of the double acting cylinder.

4629321, Dec 16, 1986

Sep 27, 1985

6/781095

Edward E. Hart - Springfield OH
Ted L. Teach - Dayton OH

Spectra-Physics, Inc. - San Jose CA

G01C 900

356248

An arrangement for use in a laser beam projection device for controlling the orientation of a support frame upon which a laser beam source is mounted includes a base frame, a support frame, and a pivot for mounting the support frame on the base frame. A level arm is pivotally supported at one point by the support frame and carries a level vial which provides an electrical indication of the orientation of the level arm. A positioning arrangement engages the support frame and the level arm and adjusts their relative position. The positioning arrangement includes a threaded shaft having a first threaded portion engaging the support frame and a nut engaging a second threaded portion of the shaft. The nut contacts the level arm. By rotating the nut, the relative position of the level arm and the support frame are adjusted.

4662707, May 5, 1987

Sep 27, 1985

6/781094

Ted L. Teach - Dayton OH
Mark D. Sobottke - Kettering OH

Spectra-Physics, Inc. - San Jose CA

G02B 2608

350 65

An apparatus for projecting a laser beam in a reference plane includes several imrovements. A generally cylindrical, one-piece molded transparent lighthouse structure overlies the rotatable pentaprism beam diverting assembly of the apparatus. The lighthouse structure is mounted on the housing so as to allow transmission therethrough of the rotating laser beam projected by the beam diverting assembly. The lighthouse structure has a tapered or conical configuration facilitating molding thereof, but which produces a divergence of the laser beam as it passes through the structure. A continuous resilient flexible ring is adapted to releasably attach to the apparatus housing and tightly fit about the lighthouse structure for removably anchoring the structure to the housing in a sealed relationship, providing a water-tight enclosure for the pentaprism beam diverting assembly and imposing a generally uniform attaching pressure about the lighthouse structure. A beam compensating lens aligned across the laser beam and coupled with the beam diverting assembly for movement therewith. The compensating lens being in the form of a positive meniscus lens is configured to correct the divergence in the laser beam which occurs when the beam passes through the one-piece molded lighthouse structure.

5334987, Aug 2, 1994

Apr 1, 1993

8/041162

Ted L. Teach - Dayton OH

Spectra-Physics Laserplane, Inc. - Dayton OH

H04B 7185, G01S 502

342357

An aircraft control system for applying chemicals to an agricultural field in one of a plurality of flight patterns is provided. A global positioning system receiver receives radio frequency signals from satellites and the position of the aircraft is determined from the information contained in the received signals. An aircraft computer stores the surface coordinates of the field to be sprayed. The aircraft pilot enters the desired orientation, swath width and track width of the flight pattern into the computer. Based on the aforementioned information, the computer produces a flight pattern having the desired orientation and generates, via a pilot headset, audible signals representative of amount and direction of deviation from the desired flight pattern. The computer means may also automatically activate and deactivate chemical spraying upon entering and exiting, respectfully, the airspace above the field.

4129224, Dec 12, 1978

Sep 15, 1977

5/833432

Ted L. Teach - Dayton OH

Laserplane Corporation - Dayton OH

E02F 920

214763

In a backhoe of the type having an outreach boom horizontally pivotally mounted relative to a vehicle and an hydraulic cylinder therebetween, a downreach boom horizontally pivotally mounted on the free end of the outreach boom and an hydraulic cylinder therebetween, and a digging bucket horizontally pivotally mounted on the free end of the downreach boom and an hydraulic cylinder therebetween, apparatus is provided for respectively generating signals proportional to the angle between the outreach boom and the horizontal, the angle between the outreach boom and the downreach boom, the angle between the downreach boom and a line drawn to the digging teeth of the bucket, and an angle equal to the desired slope of the bottom of the excavation relative to the true horizontal. Such signals are combined according to a trigonometric equation to provide a continuous signal and/or visual indication to indicate the absolute elevation of the digging teeth of the backhoe bucket and the same signals are also utilized to control the hydraulic cylinders and the relationships between the aforementioned angles so that the digging teeth of the bucket move parallel to the desired slope of the bottom of the excavation throughout the digging stroke.

4028822, Jun 14, 1977

Apr 20, 1976

5/678694

Ted L. Teach - Dayton OH

Laserplane Corporation - Dayton OH

E02F 506, B27G 2300

37 86

The invention relates to a mechanism permitting the manual control of an trencher which is normally carried in trailing relationship to a vehicle and is pivotally mounted to the vehicle. The effective cutting depth of this type trencher is determined by the angle of the frame carrying the endless chain relative to the horizontal. An upstanding sighting bar is pivotally mounted to the frame of the trencher and means are provided for maintaining the sighting bar in a true vertical position irrespective of the angle of the frame relative to the horizontal. Additionally, the effective vertical height of the sighting bar is varied as a trigonometric function of the angle of the digging frame relative to the horizontal.

4836669, Jun 6, 1989

Nov 16, 1987

7/120817

Ted L. Teach - Dayton OH

Spectra-Physics, Inc. - San Jose CA

G02B 510, G01B 1126

350618

An apparatus and method project light in two orthogonal planes to provide reference planes of light for use in laying out a construction site or the like. The apparatus comprises a laser light source for providing a source beam of light, and a light diverting arrangement. The light diverting arrangement diverts a first portion of the source beam of light to project a first thin reference fan beam of light substantially in a first reference plane, and diverts a second portion of the source beam of light to project a second thin reference fan beam of light substantially in a second reference plane. The second reference plane is substantially perpendicular to the first reference plane. The apparatus may advantageously be used in laying out a grid.

4034490, Jul 12, 1977

Nov 3, 1975

5/628095

Ted L. Teach - Dayton OH

Laserplane Corporation - Dayton OH

E02F 506, E02F 920, E02F 926, G05G 1504

37 86

The cutting depth of an endless chain type trencher is normally determined by the angle of the frame carrying the endless chain relative to the horizontal. In accordance with this invention, the angular position of the digging frame is controlled by one or more hydraulic cylinders which, in turn, are controlled by signals derived from sensors carried by an upstanding vertical mast mounted to the frame which detects a reference plane defined by a rotating laser beam. A trigonometric correction factor to compensate for the mast mounting is included.

4830489, May 16, 1989

Aug 20, 1986

6/898080

Gary L. Cain - New Carlisle OH
DuWain K. Ake - Huber Heights OH
Ted L. Teach - Dayton OH

Spectra-Physics, Inc. - San Jose CA

G01B 1114, G01B 1126

356 73

A laser beam alignment system includes a transmitter which establishes a laser reference plane by continuously rotating a horizontal laser beam about the transmitter. A remotely located receiver senses the elevation of the laser reference plane and reflects a portion of the laser energy back to the transmitter where the reflected energy is employed to produce a signal indicative of the range of the receiver and its location with respect to a reference axis. The position of the receiver is thus established in three dimensions.

5095629, Mar 17, 1992

Jan 31, 1991

7/648559

Daniel R. Klemer - New Carlisle OH
Mark D. Sobottke - Kettering OH
Ted L. Teach - Dayton OH

Spectra-Physics Laserplane, Inc. - Dayton OH

G01C 1500, G01B 1100

33293

A laser beam target for use with a projector capable of providing a reference laser beam of light traveling in a predetermined path is provided and includes a main body portion having first and second surfaces. A plurality of projections are provided on at least one of the first and second surfaces for directing at least a portion of the reference beam of light into a specific range of vertical viewing angles away from the path of the beam as the light passes from the body, thereby permitting a worker viewing the target to more easily determine when the reference beam of light is in alignment with appropriate reference indicia on the target.