1. A speed and direction control mechanism for a differential speed steered agricultural machine comprising:
a ground supported main frame;
an engine resiliently connected to the main frame;
right and left drive motors;
right and left hydraulic drive pumps connected in tandem to and driven by the engine, each drive pump having a displacement control mechanism including a pintel arm rotatable between first and second positions, rotation of which changes hydraulic fluid flow rate from respective drive pumps to control speed and direction of respective drive motors;
a control input shaft connected to the left and right pintel arms, the shaft rotatable about its longitudinal axis and translatable along its longitudinal axis, rotation of the shaft causing simultaneous rotation of the pintel arms in opposite directions, translation of the shaft causing simultaneous rotation of the pintel arms in the same direction;
a steering wheel and steering shaft operably connected to rotate the control input shaft to manage relative displacement of the right and left hydraulic pumps thereby enabling right and left drive motors to be driven at different speeds andor directions; and
an actuator having a fixed end and a moveable end and variably axially positionable between first and second lengths, the moveable end connected to the control input shaft, the fixed end connected to the drive pumps, movement thereof causing translation of the shaft in either direction along its longitudinal axis.
2. The mechanism of claim 1, wherein the control input shaft includes a first externally threaded portion and a second externally threaded portion, and each pintel arm includes an internally threaded connected block engaged on the first and second threaded portions, respectively, the threads connection of the pintel arms to the control input shaft.
3. The mechanism of claim 2, further comprising a steering shaft and a coupling disposed between the steering wheel and the control input shaft, the coupling having a splined interface connecting the steering shaft and the control input shaft to transfer rotational movement from the steering wheel to the control input shaft while permitting axial movement of the control input shaft relative to the steering wheel.
4. The mechanism of claim 3, wherein the connection between the actuator fixed end and the pumps comprises a rigid bracket.
5. The mechanism of claim 4, wherein the actuator is a linear actuator.
6. A mechanism that controls speed and direction of travel of a self-propelled agricultural machine comprising:
a machine main frame;
an engine for propelling the machine, the engine being resiliently attached to the main frame;
right and left hydraulic drive pumps connected in tandem to and driven by the engine, each drive pump having a displacement control mechanism including a pintel arm rotatable between first and second positions, rotation of the pintel arms changing hydraulic fluid flow rate from respective drive pumps to control speed and direction of travel of the machine;
a control input shaft operably connected to the left and right pintel arms, the shaft rotatable about its longitudinal axis and translatable along its longitudinal axis, rotation of the shaft causing simultaneous rotation of the pintel arms in opposite directions, translation of the shaft causing simultaneous rotation of the pintel arms in the same direction;
an actuator having a fixed end and a moveable end, the length therebetween being selectively variable between first and second lengths, the moveable end connected to the control input shaft, the fixed end connected to the drive pumps, variation in the length thereof moving the control input shaft in either direction along its longitudinal axis regardless of movement of the drive pumps relative to the main frame.
7. The mechanism of claim 6, wherein the control input shaft includes a first externally threaded portion and a second externally threaded portion, and each pintel arm includes an internally threaded connected block engaged on the first and second threaded portions, respectively, the threads connection of the pintel arms to the control input shaft.
8. The mechanism of claim 7, wherein the connection between the actuator fixed end and the pumps comprises a rigid bracket.
9. The mechanism of claim 8, wherein the actuator is a linear actuator.
10. The mechanism of claim 9, further comprising a steering wheel and steering shaft operably connected to rotate the control input shaft.
11. A mechanism for controlling speed and direction of travel of a self-propelled agricultural machine comprising:
a machine main frame;
an engine for propelling the machine, the engine being resiliently attached to the main frame;
right and left hydraulic drive pumps operably supported in tandem and driven by the engine, each drive pump having a displacement control mechanism including a pintel arm rotatable between first and second positions, rotation of the pintel arms changing hydraulic fluid flow rate from respective drive pumps to control speed and direction of travel of the machine;
a control input shaft operably connected to the left and right pintel arms, the shaft rotatable about its longitudinal axis and translatable along its longitudinal axis, rotation of the shaft causing simultaneous rotation of the pintel arms in opposite directions, translation of the shaft causing simultaneous rotation of the pintel arms in the same direction; and
an elongate actuator having a selectively variable length between generally opposing first and second ends, the first end connected to the control input shaft for movement therewith, the second end anchored to the hydraulic drive pumps to prevent relative motion between the drive pumps and the main frame from axially moving the control shaft.
12. The mechanism of claim 10, wherein the actuator is a linear actuator.
13. A control assembly comprising:
a controller that regulates a swash plate angle for a hydraulic pump; and
a mounting component that mounts the controller to the hydraulic pump, to mitigate a movement of the controller relative to the hydraulic pump;
wherein any movement of the control assembly occurs as a single unit, with substantially no relative movement between the controller and hydraulic pump affecting the swash plate angle.
14. The control assembly of claim 13, wherein the mounting component further comprises a bracket weld assembly that is rigidly mounted to the hydraulic pump.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A nonvolatile semiconductor memory device, comprising:
a semiconductor layer;
a block insulating film;
an organic molecular layer formed between the semiconductor layer and the block insulating film, the organic molecular layer having a first organic molecular film on the semiconductor layer side containing first organic molecules, the organic molecular layer having a second organic molecular film on the block insulating film side containing second organic molecules, the first organic molecule having a charge storing unit, the second organic molecule being an amphiphilic organic molecule; and
a control gate electrode formed on the block insulating film.
2. The device according to claim 1, further comprising
a tunnel insulating film formed between the semiconductor layer and the organic molecular layer.
3. The device according to claim 1, wherein
the first organic molecules have an insulating unit between the charge storing unit and the semiconductor layer, and the insulating unit contains straight chain saturated hydrocarbon.
4. The device according to claim 1, further comprising:
a tunnel insulating film formed on the semiconductor layer side between the semiconductor layer and the organic molecular layer; and
a conductive layer formed on the organic molecular layer side between the semiconductor layer and the organic molecular layer.
5. The device according to claim 1, wherein
the amphiphilic organic molecule has a hydrophobic unit and a hydrophilic unit,
the hydrophobic unit is an alkyl chain, a fluoroalkyl chain, a polysilane chain or a phenylene chain, and
the hydrophilic unit has one of an ether group, a carboxy group, a hydroxy group, an amino group or a thiol group.
6. The device according to claim 1, wherein the amphiphilic organic molecule is a nonionic surfactant.
7. The device according to claim 1, wherein the amphiphilic organic molecule is polyethylene glycol alkylether shown in General Formula (I),
wherein, n is an integer not smaller than 3 and not larger than 20, and m is an integer not smaller than 3 and not larger than 20.
8. The device according to claim 1, wherein the amphiphilic organic molecule is trisiloxanepolyethylene glycol shown in General Formula (II),
wherein, n is an integer not smaller than 3 and not larger than 20, and m is an integer not smaller than 3 and not larger than 20.
9. The device according to claim 1, wherein the amphiphilic organic molecule is pentaethyleneglycol monododecylether.
10. A nonvolatile semiconductor memory device, comprising:
a semiconductor layer;
a control gate electrode; and
an organic molecular layer formed between the semiconductor layer and the control gate electrode, the organic molecular layer having a first organic molecular film on the semiconductor layer side containing first organic molecules, the organic molecular layer having second organic molecular film on the control gate electrode side containing second organic molecules, the first organic molecule having a charge storing unit, the second organic molecule being an amphiphilic organic molecule.
11. The device according to claim 10, wherein the amphiphilic organic molecule contains straight chain saturated hydrocarbon.
12. The device according to claim 10, wherein
the amphiphilic organic molecule has a hydrophobic unit and a hydrophilic unit,
the hydrophobic unit is an alkyl chain, a fluoroalkyl chain, a polysilane chain or a phenylene chain, and
the hydrophilic unit has one of an ether group, a carboxy group, a hydroxy group, an amino group or a thiol group.
13. The device according to claim 10, wherein the amphiphilic organic molecule is polyethylene glycol alkylether shown in General Formula (I),
wherein, n is an integer not smaller than 3 and not larger than 20, and m is an integer not smaller than 3 and not larger than 20.
14. The device according to claim 10, wherein the amphiphilic organic molecule is trisiloxanepolyethylene glycol shown in General Formula (II),
wherein, n is an integer not smaller than 3 and not larger than 20, and m is an integer not smaller than 3 and not larger than 20.
15. The device according to claim 10, wherein the amphiphilic organic molecule is pentaethyleneglycol monododecylether.
16. A nonvolatile semiconductor memory device, comprising:
a stacked structure having insulating layers and control gate electrode layers, the insulating layers and the control gate electrode layers being alternately stacked;
a block insulating film provided on a side surface of a hole penetrating the stacked structure from its top surface to the lowermost control gate electrode layer with respect to a stacking direction of the stacked structure;
an organic molecular layer having a first organic molecular film formed on an inner surface of the block insulating film containing first organic molecules, the organic molecular layer having a second organic molecular film formed on an inner surface of the first organic molecular film containing second organic molecules, the first organic molecule having a charge storing unit, the second organic molecule being an amphiphilic organic molecule;
a tunnel insulating film provided on the inner surface of the organic molecular layer; and
a semiconductor layer provided on the inner surface of the tunnel insulating film.
17. The device according to claim 16, wherein
the amphiphilic organic molecule has a hydrophobic unit and a hydrophilic unit,
the hydrophobic unit is an alkyl chain, a fluoroalkyl chain, a polysilane chain or a phenylene chain, and
the hydrophilic unit has one of an ether group, a carboxy group, a hydroxy group, an amino group or a thiol group.
18. The device according to claim 16, wherein the amphiphilic organic molecule is polyethylene glycol alkylether shown in General Formula (I),
wherein, n is an integer not smaller than 3 and not larger than 20, and m is an integer not smaller than 3 and not larger than 20.
19. The device according to claim 16, wherein the amphiphilic organic molecule is trisiloxanepolyethylene glycol shown in General Formula (II),
wherein, n is an integer not smaller than 3 and not larger than 20, and m is an integer not smaller than 3 and not larger than 20.
20. The device according to claim 16, wherein the amphiphilic organic molecule is pentaethyleneglycol monododecylether.