Donald W Thomas

US Patent:

41633482, Aug 7, 1979

Filed:

Aug 28, 1978

Appl. No.:

5/937226

Inventors:

Donald K. Thomas - South Pasadena CA

International Classification:

E04C 256

US Classification:

52241

Abstract:

A partition formed of two spaced panels forming outer wall surfaces. The partitions are spaced by a paper honeycomb structure, passages in the honeycomb being substantially perpendicular to the panels. There are elongated H-shaped members fitted on each of two opposite ends of the panels, the H-bar of the members being adjacent the panel end edges. There is a partition stabilizing bar extending centrally between the panels and extending through a space between two sections of the honeycomb. The stabilizing bar is threaded at both ends and secured to and through the H-bars of the H-shaped members so as to prevent bowing or collapse of the partition in the direction of the bar. The method includes the steps of putting the partition together, particularly the steps of inserting the stabilizing bar between the honeycomb sections after they have been secured between the panels and of securing the stabilizing bar to the H-shaped members.

US Patent:

41746686, Nov 20, 1979

Filed:

Aug 7, 1978

Appl. No.:

5/931761

Inventors:

Donald K. Thomas - South Pasadena CA

International Classification:

A47B 306

US Classification:

108 25

Abstract:

A working table or desk having a grating for vertical storage of material in elongated form, such as rolled blueprints. The table has a vertically directed opening with grating forming rods extending thereacross to form spaces for inserting rolled documents for storage. A container is positioned below the opening on the floor to receive the lower ends of the material. The opening has vertical surfaces having spaced horizontally directed holes therein. Each hole on each surface is in alignment with an opposite hole in an opposite surface to receive the rods forming the grating. One of each pair of oppositely aligned holes is deeper than the other to receive a coil spring. Each rod is inserted into a deeper hole to be in abutment with the spring, the spring being compressed to permit the entry of the rod across the opening and when so compressed the other end of the rod is within the opening and in position to be forced into the opposite hole by the bias of the spring. The spring thus holds each rod in place. In order to provide an arrangement of crossing rods to form the grating, holes in faces adjacent to faces having a first group of holes are bored at a higher level so that the rods may fit above the first rods and cross the latter.

US Patent:

42719038, Jun 9, 1981

Filed:

Apr 13, 1979

Appl. No.:

6/029855

Inventors:

Grady M. Slagle - Long Beach CA
Donald O. Thomas - Long Beach CA

Assignee:

Coalinga Corporation - Long Beach CA

International Classification:

E21B 33128
E21B 3410

US Classification:

166129

Abstract:

A flow control and safety valve for oil wells where control of flow in the casing annulus is accomplished with a wire-line retrievable device. A basic valve structure provides for control of flow in the casing annulus by means of a control line to the surface. A number of additional functions can be added to the basic valve structure to accomplish control of flow through the tubing string and can accommodate control of dual and triple zone recovery. These additional functions are accomplished by landing additional wire-line retrievable valves within the basic structure whereby independent control of the annulus and tubing string flows is possible, at the same time affording increased flow diameters for a greater volume of production in a given casing size.

US Patent:

44372787, Mar 20, 1984

Filed:

Feb 22, 1982

Appl. No.:

6/350821

Inventors:

Donald K. Thomas - Pasadena CA

International Classification:

B21B 3108
B21C 104
B21C 112

US Classification:

52239

Abstract:

A locking system for retaining a pair of modular wall partitions in locked relationship. The locking system includes a threaded insert means in the first partition end aligned with a bolt extending through the end of the second partition. As the bolt is threaded into the insert the respective ends of the partitions are drawn together to lock the same in a rigid connection one to the other.

Author:

Donald F. Thomas

ISBN #:

0817004149

Author:

Donald Serrell Thomas

ISBN #:

0233969667

Author:

Donald Serrell Thomas

ISBN #:

0297780921

Author:

Donald Serrell Thomas

ISBN #:

0333150422

Author:

Donald Serrell Thomas

ISBN #:

0333180879

Author:

Donald Serrell Thomas

ISBN #:

0333905229

Author:

Donald Serrell Thomas

ISBN #:

0670203556

Author:

Donald Serrell Thomas

ISBN #:

0670203882