What is claimed is:
1. A leader board comprising:
a base configured to cooperate with an actuating mechanism in a conveyor system;
a plurality of retaining elements coupled to the base and configured to at least temporarily retain a circuit board; and
a support element coupled to the base and located between at least two of the plurality of retaining elements.
2. The leader board of claim 1 wherein the base comprises a top element and a bottom element.
3. The leader board of claim 2 wherein the top element comprises a lever and the bottom element comprises a fulcrum for the lever.
4. The leader board of claim 3 wherein the bottom element comprises a cutout that at least partially defines the fulcrum.
5. The leader board of claim 2 wherein at least one of the top element and the bottom element comprises an FR-4 glass epoxy layer.
6. The leader board of claim 4 wherein at least one of the retaining element is formed at least in part by the lever and the cutout, and wherein the retaining element further comprises a finger coupled to at least one of the top and bottom elements.
7. The leader board of claim 6 wherein the finger further comprises a metal point.
8. The leader board of claim 2 further comprising a separating layer between the top element and the bottom element.
9. The leader board of claim 8 wherein the separating layer comprises a prepreg.
10. A chain comprising a plurality of leader boards according to claim 1, wherein at least two of the plurality of leader boards are movably coupled to each other.
11. The chain of claim 10 wherein at least part of the plurality of leader boards are configured in a roll.
12. A leader board system comprising a leader board according to claim 1, wherein the leader board is further coupled to at least one of a printed wiring board and a printed circuit board.
13. A method of retaining a circuit board, comprising:
providing a leader board comprising a base configured to cooperate with an actuating mechanism in a conveyor system, a plurality of retaining elements coupled to the base and configured to at least temporarily retain the circuit board, and a support element coupled to the base and located between the plurality of retaining elements; and
inserting the circuit board into at least some of the plurality of retaining elements such that the circuit board further contacts the support element.
14. The method of claim 13 wherein the base comprises a top element and a bottom element, and wherein the top element comprises a lever and the bottom element comprises a fulcrum for the lever.
15. The method of claim 14 wherein the bottom element further has a cutout that at least partially defines the fulcrum.
16. The method of claim 13 further comprising providing a second leader board and inserting the circuit board into at least some of the plurality of retaining elements of the second leader board such that the circuit board further contacts the support element of the second leader board.
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 assembly comprising a housing assembly having a first exhaust flow port and a second exhaust flow port formed therein, a first exhaust flow port valve plate received in the housing assembly constructed and arranged to move to a position to at least partially block flow of gas through the first exhaust flow port, and a second port valve plate received in the housing assembly and constructed and arranged to move to a position to at least partially block gas through the second exhaust flow port, and a single actuator connected to move both of the first exhaust flow port valve plate and the second exhaust flow port valve plate.
2. An assembly as set forth in claim 1 further comprising a shaft connected to the actuator and directly connected to at least one of the first exhaust flow port valve plate or the second flow port valve plate.
3. An assembly as set forth in claim 1 further comprising a shaft connected to the actuator and directly connected to each of the exhaust flow port valve plate and the second flow port valve plate.
4. An assembly as set forth in claim 3 further comprising a first housing and wherein at least one of the first exhaust flow port valve plate and the second flow port valve plate is received in the housing.
5. An assembly as set forth in claim 4 wherein the actuator is received in the housing assembly.
6. An assembly as set forth in claim 4 wherein the housing is constructed and arrange to provide a water cooling jacket for the flow of cooling water therethrough.
7. An assembly as set forth in claim 1 wherein the housing assembly comprising a means for housing the exhaust flow port valve plate, the EGR port valve plate and the actuator.
8. An assembly as set forth in claim 1 further comprising a common shaft connected to the single actuator and each of the exhaust flow port valve plate and the EGR flow port valve plate, and wherein the common shaft is straight without bends, and wherein the assembly is constructed and arranged so that the first exhaust flow port valve plate is moveable from a position of about 15 degrees beyond vertical to delay start of the exhaust throttling to a position wherein exhaust gas flows past the first exhaust flow port valve plate.
9. As assembly as set forth in claim 1 wherein the assembly is constructed and arranged so the first exhaust flow port valve plate and the second flow port valve plate are moveable to provide at least three modes of operation: 1) wherein the first exhaust valve port was open while the second valve port is closed such that the engine exhaust passes only through exhaust port; 2) wherein as the valve shaft rotates, the exhaust valve port begins to close while the second exhaust valve port begins to open allowing some amount of EGR flow; 3) wherein as the valve continues to rotate, the first exhaust valve port becomes partially to fully closed at a point where the second exhaust port is fully open or substantially open driving the maximum amount of exhaust gas through the second exhaust port.
10. As assembly as set forth in claim 1 wherein the assembly is constructed and arranged so the first exhaust flow port valve plate and the second exhaust flow port valve plate are moveable to provide at least four modes of operation: 1) wherein the second exhaust port is fully closed and the exhaust path fully opened; 2) wherein the second exhaust port is partially to fully open and the exhaust flow path fully open; 3) wherein the second exhaust port is fully open and the exhaust path partially to fully closed; and 4) wherein the second exhaust port is fully closed and the exhaust path is partially to fully closed.
11. An assembly as set forth in claim 1 further comprising a turbocharger comprising a turbine connected to an exhaust conduit and a compressor connected to an air intake conduit, and wherein the exhaust conduit is connected to the exhaust port of the housing assembly, an EGR line connected to the second exhaust port of the housing assembly and to the air intake line so the housing assembly is downstream of the turbine.
12. An assembly as set forth in claim 3 wherein the first exhaust flow port valve plate and the second exhaust flow port valve plate are connected to the common shaft at different angle with respect to the axis of the common shaft.
13. An assembly as set forth in claim 1 wherein the first exhaust flow port valve plate comprises a side edge having an arcuate shaped.
14. An assembly as set forth in claim 1 wherein the housing assembly comprises housing comprising aluminum and receive the second exhaust port valve plate and the actuator.
15. An assembly as set forth in claim 14 wherein the housing comprising aluminum receives the first exhaust port valve plate.
16. A product comprising a combined low pressure exhaust gas recirculation valve and exhaust throttle valve including a first plate and a second valve plate, both the first plate and the second valve plate being connected to a common valve shaft in a spaced apart relationship.
17. A product as set forth in claim 16 wherein the common shaft is straight.
18. An assembly as set forth in claim 1 further comprising a shaft connected to the actuator and directly connected to at least one of the exhaust flow port valve plate or the EGR flow port valve plate, and a link connecting the other of the exhaust flow port valve plate or the EGR flow port valve plate to the shaft.
19. An assembly as set forth in claim 16 further comprising a single actuator connected to the shaft to rotate the same.
20. An assembly as set forth in claim 19 further comprising a means for housing the first plate, the second valve plate and the actuator.