John H Nall

US Patent:

20180370643, Dec 27, 2018

Filed:

Jun 23, 2017

Appl. No.:

15/630992

Inventors:

- Burbank CA, US
John NALL - Granada Hills CA, US
Ivan ROSON - Long Beach CA, US

International Classification:

B64D 27/26

Abstract:

A vibration isolation device comprises a frame for mounting on an engine casing, an axis to be mounted to an external component to isolate, a resilient member located between the frame and the axis, and a fuse mechanism ensuring that the vibration isolation device presents a first stiffness when loads applied to said vibration isolation device are below a predetermined threshold load, and a second stiffness, lower than the first stiffness, when loads applied to the vibration isolation device are at least equal to the predetermined threshold load. The fuse mechanism constrains the resilient member within a predetermined space when loads applied to the vibration isolation device are below the predetermined threshold load and to release the resilient member so that this latter is capable of deforming beyond said predetermined space when loads applied to the vibration isolation device are at least equal to the predetermined threshold load.

US Patent:

20180223944, Aug 9, 2018

Filed:

Feb 3, 2017

Appl. No.:

15/423719

Inventors:

- Burbank CA, US
John NALL - Granada Hills CA, US
Ivan ROSAN - Long Beach CA, US

International Classification:

F16F 13/10
F16F 15/02
F16F 15/023
B64D 27/26

Abstract:

A hydraulic torque compensation device comprises a pair of housings, a first housing including a first high pressure liquid chamber and a second low pressure liquid chambers, a second housing having a third high pressure liquid chamber, a fourth accumulator chamber, and a fifth low pressure chamber that is defined by a wall and an end of the second housing. A first main duct links the first chamber of the first housing to the third chamber of the second housing. A second main duct links the second chamber of the first housing to the fifth chamber of the second housing. Each housing also include a piston, the first chamber between a first piston body and an end of the first housing and the third chamber between a second piston body and the wall. The device ensures a counter action to engine loads when a positive torque is applied.