1. A wrench comprising a rod and a casing, the rod having a driven portion, a driving tip, and a straight section therebetween;
the driven portion having a clamped section, a rotating section and a cantilever section therebetween;
the clamped section being securely clamped in the casing;
the rotating section being rotatable between a free position and a biased position;
wherein in the biased position, the rod closes an electric circuit, activating an indicator; and
wherein the rotating section is transverse to the straight section.
2. The wrench of claim 1, wherein the casing comprises a base and a cover secured together.
3. The wrench of claim 2, wherein in the free position the rotating section of the rod nests in a base channel in the base, substantially below a base inner face.
4. The wrench of claim 1, wherein the electric circuit includes a battery housed in the casing.
5. The wrench of claim 4, wherein the electric circuit comprises the rod and a terminal connected to the battery.
6. The wrench of claim 5, wherein the electrical circuit closes when the rod is in the biased position by a contact formed between the rod and the terminal.
7. The wrench of claim 6, further comprising an adjusting bolt threaded in an adjusting bore associated with the casing, the adjusting bolt operatively connected to the terminal and configured to adjust an amount of torque required to activate the indicator.
8. The wrench of claim 1, wherein the indicator is a Light Emitting Diode (LED).
9. The wrench of claim 1, wherein the indicator is a buzzer.
10. A wrench comprising a rod and a casing, the rod having a driven portion, a driving tip, and a straight section therebetween;
the driven portion having a clamped section, a rotating section and a cantilever section therebetween;
the clamped section being securely clamped in the casing;
the rotating section being rotatable between a free position and a biased position;
wherein in the biased position, the rod closes an electric circuit, activating an indicator;
wherein the casing comprises a base and a cover secured together;
wherein in the free position the rotating section of the rod nests in a base channel in the base, substantially below a base inner face; and
wherein in the biased position at least a portion of the rotating section of the rod is located above the base inner face in a rotation relief channel in a cover inner face.
11. The wrench of claim 10, wherein the cantilever section is substantially parallel to the straight section of the rod.
12. A wrench comprising a rod and a casing, the rod having a driven portion, a driving tip, and a straight section therebetween;
the driven portion having a clamped section, a rotating section and a cantilever section therebetween;
the clamped section being securely clamped in the casing;
the rotating section being rotatable between a free position and a biased position;
wherein in the biased position, the rod closes an electric circuit, activating an indicator;
wherein the driven portion is substantially U-shaped.
13. The wrench of claim 12, wherein the clamped section and the rotating section are substantially perpendicular to the cantilever section extending therebetween.
14. A wrench comprising:
a casing;
a rod at least partially housed in the casing, the rod having a driven portion connected to a driving tip, the driven portion including a clamped section clamped in the casing, and a rotating section connected to the clamped section; and
a battery-powered indicator;
wherein the rotating section is movable between a free position, and a biased position in which the rotating section closes an electric circuit to thereby activate the indicator; and
wherein at least a portion of the rotating section is urged in a direction of a casing cover to close said electric circuit.
15. The wrench according to claim 14, wherein the driven portion further comprises a cantilever section connecting the clamped section to the rotating section.
16. The wrench according to claim 15, wherein the driven portion is substantially U-shaped with the clamped section and the rotating section being parallel to one another.
17. The wrench according to claim 16, wherein the rod further comprises a straight section connecting the driven portion to the driving tip.
18. The wrench according to claim 14, wherein said at least a portion of the rotating section is urged from a channel formed in a casing base into a channel formed in the casing cover, to close said electric circuit.
19. A wrench comprising:
a casing;
a rod at least partially housed in the casing, the rod having a driven portion connected to a driving tip, the driven portion including a clamped section clamped in the casing, and a rotating section connected to the clamped section; and
a battery-powered indicator;
wherein the rotating section is movable between a free position, and a biased position in which the rotating section closes an electric circuit to thereby activate the indicator; and wherein:
the driven portion further comprises a cantilever section connecting the clamped section to the rotating section, the clamped section and the rotating section being substantially perpendicular to the cantilever section;
the rod further comprises a straight section connecting the driven portion to the driving tip; and
the cantilever section is substantially parallel to the straight section of the rod.
20. A wrench comprising:
a casing;
a rod at least partially housed in the casing, the rod having a driven portion connected to a driving tip, the driven portion including a clamped section clamped in the casing, and a rotating section connected to the clamped section; and
a battery-powered indicator;
wherein the rotating section is movable between a free position, and a biased position in which the rotating section closes an electric circuit to thereby activate the indicator; and
further comprising an adjusting bolt threaded in an adjusting bore associated with the casing, the adjusting bolt configured to adjust an amount of torque required to activate the indicator.
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 grain unloading system for a combine harvester comprising:
a cylindrical unloading tube having a discharge outlet at the end of the tube,
a helical auger situated in the unloading tube and operable to convey grain towards and through the discharge outlet,
a dribble control door pivotally connected to the tube adjacent the discharge outlet so as to be pivotally moveable between a closed position and an open position,
a lever arm fixed at one end to the dribble control door,
a gas spring connected between the tube and the lever arm, the gas spring being pressurised so as to provide a closing moment to bias the dribble control door into the closed position, wherein the lever and gas spring are arranged such that the closing moment increases as the dribble control door moves from the open position to the closed position.
2. A grain unloading system according to claim 1, wherein the dribble control door is pivotally connected to the tube by a hinge mounted along, or proximate to, a bottom edge of the discharge opening.
3. A grain unloading system according to claim 1, wherein the lever extends downwardly from the dribble control door, and wherein the gas spring is mounted to the underside of the tube.
4. A grain unloading system according to claim 1, wherein the discharge opening is defined by a cut-out half-cylindrical segment in a lower part of the tube.
5. A grain unloading system according to claim 1, wherein the dribble door is shaped to provide a chute when in the open position.
6. A grain unloading system according to claim 1, wherein the gas spring and the level arm are substantially aligned when the dribble control door is in the open position.