James R Downing

US Patent:

42481058, Feb 3, 1981

Filed:

Sep 27, 1978

Appl. No.:

5/946145

Inventors:

James W. Downing - Buena Park CA
Teunes Verhoeven - Long Beach CA

Assignee:

McDonnell Douglas Corporation - Long Beach CA

International Classification:

F16H 144
F16D 900
G05G 700

US Classification:

747105

Abstract:

A mechanical power transmission apparatus, of the differential gear type, for actuating an airplane control surface requiring two independent actuator inputs to a single control surface. Asymmetric loading to the control surface is accommodated by a mechanical fuse link. The fuse link is provided by employing a shear pin to attach the pinion gear to the pinion shaft, designed to fail at a predetermined differential torque between the two driven bevel gears. Positive disengagement of the gears is provided following fuse link release.

US Patent:

42826276, Aug 11, 1981

Filed:

Dec 18, 1978

Appl. No.:

5/970356

Inventors:

James W. Downing - Buena Park CA

Assignee:

McDonnell Douglas Corporation - Long Beach CA

International Classification:

B65D 748
F16L 500

US Classification:

16 2

Abstract:

A one piece fairlead grommet for protecting an aircraft control cable where penetrating a bulkhead or cable support panel. The fairlead grommet has a generally cylindrical body with frustro conically shaped flanges and a through-slot, generally, longitudinally oriented. The slot forms an angle with a radius line drawn from the center of the grommet bore to permit the slot surfaces to be readily offset and the grommet collapsed around the control cable for installation with the control cable in place. The slot is further biased on a diagonal with respect to the horizontal axis of the grommet bore to ensure a wearing surface in contact with the cable at the slot.