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A transportable recyclable materials densifier including an integrally configured conveyor, separator, and compactor chamber mounted on a trailer frame that is transportable along public and private roads, for separation of ferrous from non-ferrous materials, and for compaction of non-ferrous materi

A transportable recyclable materials densifier including an integrally configured conveyor, separator, and compactor chamber mounted on a trailer frame that is transportable along public and private roads, for separation of ferrous from non-ferrous materials, and for compaction of non-ferrous materials at each location to which the trailer is transported. A conveyor is directs materials to the separator for separation of non-ferrous materials that are directed into an upper opening in a first end of the compactor chamber, with rejection of ferrous materials from the separator for discharge. A reciprocally extendable piston and compactor end extends through the compactor chamber to compact the materials into a second end of the chamber. The compacted materials form a densified shape against a movable end wall that is raised after compaction for ejection of each densified shape from the compaction chamber for storage and/or transport to a recycling operation.

대표청구항 ▼

A transportable recyclable materials densifier including an integrally configured conveyor, separator, and compactor chamber mounted on a trailer frame that is transportable along public and private roads, for separation of ferrous from non-ferrous materials, and for compaction of non-ferrous materi

A transportable recyclable materials densifier including an integrally configured conveyor, separator, and compactor chamber mounted on a trailer frame that is transportable along public and private roads, for separation of ferrous from non-ferrous materials, and for compaction of non-ferrous materials at each location to which the trailer is transported. A conveyor is directs materials to the separator for separation of non-ferrous materials that are directed into an upper opening in a first end of the compactor chamber, with rejection of ferrous materials from the separator for discharge. A reciprocally extendable piston and compactor end extends through the compactor chamber to compact the materials into a second end of the chamber. The compacted materials form a densified shape against a movable end wall that is raised after compaction for ejection of each densified shape from the compaction chamber for storage and/or transport to a recycling operation. e preselected threshold voltage. 6. The driver circuit of claim 1 wherein the detector comprises a voltage divider and a buffer with hysteresis having an input coupled to said voltage divider. 7. A driver comprising: a transistor disposed in a well for driving a node from a voltage rail; a capacitor for maintaining a preselected voltage on said well when said voltage rail varies by a predetermined amount, said preselected voltage selected to maintain a diode between said well and a selected one of source and drain nodes of said transistor in a reverse biased state; and circuitry for charging said capacitor comprising: a first p-channel transistor having a source coupled to said voltage rail, a drain coupled to said capacitor, and disposed in an n-well coupled to said capacitor; a second p-channel transistor having a source coupled to said capacitor and said drain of said first p-channel transistor, a drain coupled to a gate of said first p-channel transistor, and disposed in an n-well coupled to said capacitor; and an n-channel transistor having a drain coupled to a drain of the second p-channel transistor, a gate coupled to a gate of said second p-channel transistor, the gates of said second p-channel and n-channel transistors controlled by a control signal. 8. The driver of claim 7 wherein said transistor comprises a p-channel transistor disposed in an n-well and having a source coupled to said voltage rail and a drain coupled to said node. 9. The driver of claim 7 wherein said control signal transitions from a first state to a second state when said voltage rail varies by the predetermined amount. 10. The driver of claim 7 and further comprising a second transistor for selectively maintaining a gate of said transistor at said preselected voltage when said voltage rail varies by the predetermined amount. 11. The driver of claim 7 wherein said node comprises a pad. 12. The driver of claim 8 wherein said p-channel transistor is further coupled to an n-channel transistor to form an inverter for driving said node. 13. The driver of claim 8 wherein said p-channel transistor is further coupled to an n-channel transistor forming a portion of a differential amplifier. 14. The driver of claim 9 and further comprising a detector for causing said control signal to transition from the first to the second state when said voltage rail varies by the predetermined amount. 15. A method of controlling leakage in a driver circuit comprising a p-channel transistor for driving a node from a voltage rail, the p-channel transistor disposed in an n-well, comprising the steps of: detecting a drop in the voltage at the voltage rail below a preselected threshold; and maintaining a preselected voltage at the n-well in response to said step of detecting to maintain a diode between a selected one of source and drain nodes of the p-channel transistor and the n-well in a reverse biased state. 16. The method of claim 15 wherein said step of maintaining a preselected voltage comprises the substeps of: charging a capacitor coupled to the n-well prior to a drop in the voltage at the voltage rail; and maintaining the preselected voltage at the n-well with the charged capacitor. 17. The method of claim 15 wherein said step of detecting comprises the step of detecting an interruption in the voltage at the voltage rail. 18. The method of claim 15 and further comprising the step of maintaining the preselected voltage at a gate of the p-channel transistor in response to said step of detecting. 19. The method of claim 15 wherein the node comprises a pad.