1. A ratchet tool comprising:
a ring-shaped head having a toothed member rotatably received therein and a handle having a first end pivotally inserted in said ring-shaped head, a recess defined in said first end of said handle, and
a pawl located in said ring-shaped head and between said handle and said toothed member, said pawl having teeth defined in a first side thereof so as to be engaged with said toothed member, a flexible plate extending from said first side of said pawl and contacting said toothed member, a protrusion extending from a second side of said pawl and engaged with said recess in said first end of said handle.
2. The ratchet tool as claimed in claim 1 further comprising two springs received in said ring-shaped head and located on two sides of said first end of said handle.
3. The ratchet tool as claimed in claim 2 further comprising two passages defined through said ring-shaped head and said two springs respectively received in said two passages, two bolts engaged with said two passages to retain said springs in said passages.
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. An object detection system for a first machine, comprising:
at least one transmitter configured to generate a laser beam directed onto a ground surface in proximity to the first machine;
a receiver configured to detect the laser beam and generate a corresponding signal; and
a controller in communication with the at least one transmitter and the receiver, the controller being configured to:
generate an electronic terrain map based on the signal;
make a determination that a second machine is operating within a range of the first machine; and
adjust operation of the at least one transmitter and receiver based on the determination to avoid errors in the electronic terrain map caused by interaction with a laser beam originating from the second machine.
2. The object detection system of claim 1, wherein the controller is configured to adjust operation by changing a wavelength of the laser beam generated by the at least one transmitter and detected by the receiver.
3. The object detection system of claim 1, wherein the controller is configured to adjust operation by changing a pulsation frequency of the laser beam generated by the at least one transmitter and detected by the receiver.
4. The object detection system of claim 1, wherein the controller is configured to automatically adjust operation of the at least one transmitter and receiver when the second machine is within a threshold distance of the first machine.
5. The object detection system of claim 4, wherein the controller is configured to communicate to the second machine how operation of the at least one transmitter and receiver is adjusted.
6. The object detection system of claim 4, wherein the controller is configured to adjust operation of the at least one transmitter and receiver based on a request from an operator of the first machine.
7. The object detection system of claim 1, wherein the controller includes stored in memory a map relating adjustments of the at least one transmitter and the receiver to characteristics of at least one of the first and second machines.
8. A non-transitory computer readable medium having computer executable instructions for performing a method of object detection for a first mobile machine, the method comprising:
directing at least a first laser beam and responsively generating an electronic terrain map based on the election;
making a determination that a second mobile machine is operating within a range of the first mobile machine; and
adjusting characteristics of the at least a first laser beam based on the determination to reduce undesired interactions with a second laser beam originating from caused by the second mobile machine.
9. The computer readable medium of claim 8, wherein adjusting includes adjusting a wavelength of the at least a first laser beam.
10. The computer readable medium of claim 8, wherein adjusting includes adjusting a pulsation frequency of the at least a first laser beam.
11. The computer readable medium of claim 8, wherein adjusting includes automatically adjusting characteristics of the at least a first laser beam when the second mobile machine is within a threshold distance of the first mobile machine.
12. The computer readable medium of claim 11, wherein the method further includes communicating with the second mobile machine how characteristics of the at least a first laser beam were adjusted.
13. The computer readable medium of claim 11, wherein:
the method further includes receiving an operator request to adjust the characteristics of the at least a first laser beam; and
the adjusting is itiated based on the operator request.