Donald A Bartholomew

US Patent:

42571928, Mar 24, 1981

Filed:

Feb 5, 1979

Appl. No.:

6/009607

Inventors:

Donald D. Bartholomew - Marine City MI

Assignee:

Merit Plastics, Inc. - East Canton OH

International Classification:

E05F 1500

US Classification:

49140

Abstract:

There is disclosed herein an automotive window regulator and drive mechanism which includes a rotatable flexible drive shaft to transmit rotational forces from the regulator arm to a worm gear supported on a lower edge of the window. The worm gear engages a rack secured to a portion of the vehicle so as to vary the position of the window. In one embodiment, both electric motor drive and manual crank drive means are provided either of which may be selectively engaged to drive the rotatable flexible shaft. The regulator end of the flexible drive shaft may be supported in meshing engagement with a portion of the regulator drive gear by means of a pinion pivot arm which arm includes indexing gears to enable the flexible cable to track the worm gear thereby reducing the flexing of the flexible drive shaft.

US Patent:

50013050, Mar 19, 1991

Filed:

Jan 16, 1990

Appl. No.:

7/465468

Inventors:

Donald D. Bartholomew - Marine City MI

Assignee:

Proprietary Technology, Inc. - Southfield MI

International Classification:

H02G 100
H02G 304

US Classification:

174136

Abstract:

A holder for protection and handling of a brittle electrical conductor element, such as a ceramic superconductor, limited in its ability to withstand tensile and compression forces exerted thereon and bending along its axial length beyond a predetermined arcuate path. The holder has a flexible housing which encompasses and protects the superconductor element. A helically disposed strengthening element is integral with the housing. The strengthening element resists tensile forces exerted on the housing in an axial direction and resists radially imposed forces on the housing isolating the superconductor element from these forces. The strengthening element also provides for limited arcuate bending of the housing for limiting the bending beyond a predetermined arcuate path.

US Patent:

48938459, Jan 16, 1990

Filed:

Apr 18, 1988

Appl. No.:

7/183640

Inventors:

Donald D. Bartholomew - Marine City MI

Assignee:

Proprietary Technology, Inc. - Mt. Clemens MI

International Classification:

F16L 500
F16L 3700

US Classification:

2851371

Abstract:

A method for communicating two pressure confining conduits through a wall by means of an adapter that mounts two swivelable elbows that act as conduits and conduit junctions is shown. An automotive heater application is described wherein the disclosed method allows standardization of heaters, firewall or climate package through-wall parts. Accommodation of varying the location of the through-wall adapter and heater by merely altering the communicating conduit lengths which are plugged into the adapter and heater, even when the adapter and heater are previously fixably mounted as shown. The method allows the use of the same adapter and heater across many different car lines.

US Patent:

50315595, Jul 16, 1991

Filed:

Jan 16, 1990

Appl. No.:

7/465058

Inventors:

Donald D. Bartholomew - Marine City MI

Assignee:

Proprietary Technology, Inc. - Southfield MI

International Classification:

B63B 134

US Classification:

114 67A

Abstract:

A method and apparatus for reducing friction at the interface between a liquid and a solid. A solid interface member includes a plurality of apertures over the entire surface which are to be in contact with the liquid. The apertures are of a size and dimension such that the surface tension of the liquid will not allow the liquid to pass through the apertures, but which will allow a gaseous material with less surface tension than the liquid to pass therethrough. The gaseous material is thereafter motivated through the apertures to interpose a gaseous layer at the liquid solid interface which reduces the drag coefficient therebetween, which would otherwise result from relative motion between the solid interface member and the liquid.

US Patent:

55689485, Oct 29, 1996

Filed:

Jun 7, 1995

Appl. No.:

8/487965

Inventors:

Donald D. Bartholomew - Marine City MI

Assignee:

Proprietary Technology, Inc. - Bloomfield Hills MI

International Classification:

F16L 3322

US Classification:

285242

Abstract:

A hose coupling for use with flexible hose comprises a biconical fitting which is inserted into a hose end and a frusto-conical locking sleeve located about the hose portion which grips the rearward conical section of the fitting. Sealing arrangements for specific embodiments of hose are disclosed. The double included angle of the conical portion of the sleeve and fitting, which engages the hose, is between one degree but less than ten degrees.

US Patent:

49519751, Aug 28, 1990

Filed:

Oct 24, 1988

Appl. No.:

7/264076

Inventors:

Donald D. Bartholomew - Marine City MI

Assignee:

Proprietary Technology, Inc. - Southfield MI

International Classification:

F16L 1700

US Classification:

285111

Abstract:

A coupling for attaching a conduit to an external member includes a female housing having a passageway formed therein and extending axially therealong and communicating with the external member. A retainer is disposed in the passageway for retaining the conduit when inserted into the passageway and in response to a withdrawing movement of the conduit from the passageway. A bushing is disposed in the passageway and cooperating with the retainer for allowing disengagement of retainer with the conduit to allow the conduit to be withdrawn from said passageway.

US Patent:

50639684, Nov 12, 1991

Filed:

Jun 2, 1989

Appl. No.:

7/360407

Inventors:

Donald D. Bartholomew - Marine City MI

Assignee:

Proprietary Technology, Inc. - Southfield MI

International Classification:

F16L 922

US Classification:

138109

Abstract:

A swivelable quick connect assembly for use with tubular conduits is disclosed as comprising a housing having an axial bore for receiving one end of the conduit, an elastomeric ring-like seal is disposed in the bore for providing a fluid tight seal between confronting portions of the conduit and the housing, an annular bushing is disposed in the bore for positioning the seal and for guiding the one end of the conduit into nesting relationship with the bore, and a retainer is detachably secured to the housing and is cooperable with an annular projection on the conduit for securing the conduit in its operative position within the bore, the retainer having resilient deformable portions which are adapted to snap over the locking wall upon insertion of the conduit into the housing bore.

US Patent:

49232266, May 8, 1990

Filed:

Oct 31, 1988

Appl. No.:

7/265263

Inventors:

Donald D. Bartholomew - Marine City MI

Assignee:

Proprietary Technology, Inc. - Southfield MI

International Classification:

F16L 3322

US Classification:

285242

Abstract:

A hose coupling for use with flexible hose comprises a biconical fitting which is inserted into a hose end and a frusto-conical locking sleeve located about the hose portion which grips the rearward conical section of the fitting. Sealing arrangements for specific embodiments of hose are disclosed. The double included angle of the conical portion of the sleeve and fitting, which engages the hose, is between one degree but less than ten degrees.