1
John Doise Jeter: Method and apparatus for indicating the orientation of a down hole drilling assembly. Texas Dynamatics, October 5, 1976: US03983948 (53 worldwide citation)

A drilling assembly is equipped with apparatus that includes a device that periodically changes the resistance to the flow of drilling fluid through the drill pipe to create pressure pulses that can be detected at the earth surface and a sensor for controlling the pulse orienting device in response ...


2
John Doise Jeter: Pulse transmitter. October 17, 1978: US04120097 (43 worldwide citation)

Apparatus is provided for use attached to a pipe string in a well drilling, service or servicing operation to create a signal in a fluid stream flowing in the pipe string and in material of the pipe string in response to indications of down hole sensors. The signal created consists of brief pulses c ...


3
John Doise Jeter: Method and apparatus for actuating a downhole device carried by a pipe string. Texas Dynamatics, July 6, 1976: US03967680 (37 worldwide citation)

A combination of means to detect rotation of a pipe string and means to detect flow of fluid through a pipe string is utilized to cause down hole apparatus to carry out preferred actions if the sequence of rotation rate change and flow rate change is of one character, other activities being carried ...


4
John Doise Jeter: Methods and apparatus for transmitting information through a pipe string. Texas Dynamatics, May 31, 1977: US04027282 (27 worldwide citation)

A device attached to a pipe string extending from the earth surface to subsurface locations, primarily for earth boring activities to transmit information from the subsurface location to the earth surface. The readings of subsurface sensors are converted to a message comprising a combination of pres ...


5
John Doise Jeter: Roller clutch. Texas Dynamatics, May 25, 1976: US03958678 (12 worldwide citation)

A roller clutch is provided that is capable of transmitting rotational forces between a first and second machine member. The first member is a cylindrical member such as a shaft, having a smooth outer surface. The second member includes a housing through which the shaft extends. A plurality of rolle ...


6
John Doise Jeter: Roller clutch. Texas Dynamatics, July 12, 1977: US04034833 (9 worldwide citation)

A clutch is provided to grip a body having a smooth cylindrical surface such that if the body moves relative to the clutch it is urged to do so with a predetermined relationship between the axial movement and the rotational movement. By rotating the clutch relative to the cylindrical body, the body ...


7
John Doise Jeter: Downhole motor rotor supports. Eastman Whipstock, John D Jeter, March 21, 1978: US04080094 (5 worldwide citation)

Method and apparatus to lift the rotor of an earth borehole downhole drilling motor with a resilient force that exceeds the rotor weight so that starting of the motor is more certain due to reduced drag on primary thrust bearings. Additionally the apparatus may be used to reduce imbalanced axial loa ...