Roller modules have roller assemblies that are retractable below a cargo floor. Each module includes a housing, at least one roller for engaging cargo on the floor and, a mechanism mounting the roller on the housing for shifting movement between an extended position in which the roller extends above
Roller modules have roller assemblies that are retractable below a cargo floor. Each module includes a housing, at least one roller for engaging cargo on the floor and, a mechanism mounting the roller on the housing for shifting movement between an extended position in which the roller extends above the floor for engaging cargo, and a retracted position in which the roller is disposed below the floor.
대표청구항▼
1. A retractable roller module for a cargo floor, comprising: a housing;at least one roller for engaging cargo on the floor; and,a scissors mechanism mounting the roller on the housing for shifting movement between an extended position in which the roller extends above the floor for engaging cargo,
1. A retractable roller module for a cargo floor, comprising: a housing;at least one roller for engaging cargo on the floor; and,a scissors mechanism mounting the roller on the housing for shifting movement between an extended position in which the roller extends above the floor for engaging cargo, and a retracted position in which the roller is disposed below the floor. 2. The retractable roller module of claim 1, wherein the roller and the scissors mechanism are disposed within the housing when the roller is in its retracted position. 3. The retractable roller module of claim 1, wherein the scissors mechanism includes: arms forming a scissors assembly, anda motor connected to the arms for displacing the scissors assembly. 4. The retractable roller module of claim 3, wherein: the motor is a hydraulic cylinder having first and second ends, andcertain of the arms are pivotally connected to the first and second ends of the hydraulic cylinder. 5. The retractable roller module of claim 1, wherein the scissors mechanism includes: a carrier, the roller being mounted on the carrier,an extendable scissors assembly mounting the carrier on the housing, anda motor connected with the scissors assembly for extending and retracting the scissors assembly. 6. The retractable roller module of claim 1, wherein the scissors mechanism includes a carrier, and the module includes a plurality of the rollers mounted for rotation on the carrier and aligned along a direction of travel of the cargo over the floor. 7. The retractable roller module of claim 1, wherein: the scissors mechanism includes extendable arms, andthe carrier is removably mounted on the arms. 8. A roller module for use in a cargo floor, comprising: at least one roller for engaging cargo; and,scissors means for shifting the roller between a retracted position disposed beneath the floor and an extended cargo engaging position disposed above the floor. 9. The roller module of claim 8, further comprising: a housing, andwherein the roller shifting means is mounted within the housing. 10. The roller module of claim 8, further comprising: a plurality of rollers for engaging the cargo; anda carrier on which the rollers are mounted. 11. The roller module of claim 10, wherein the roller shifting scissors means includes a set of arms connecting the carrier with the housing. 12. The roller module of claim 11, wherein the roller shifting scissors means includes motor coupled with the arms for displacing the arms. 13. The roller module of claim 12, wherein: the motor includes a fluid driven extendable cylinder, andthe arms are connected to opposite ends of the extendable cylinder. 14. The roller module of claim 8, wherein the roller shifting scissors means includes: a carrier for carrying the roller,an extendable scissors assembly connected with the carrier, anda motor connected with the scissors assembly for extending and retracting the scissors assembly. 15. A cargo floor system for aircraft, comprising: a floor;openings in the floor; and,a plurality of roller modules beneath the floor and each aligned with one of the openings in the floor, each of the roller modules including a scissors mechanism and at least one roller extendable into engagement with the cargo and retractable beneath the floor. 16. The cargo floor system for aircraft of claim 15, further comprising: beams beneath the floor for supporting the floor, andwherein the modules are supported by the beams. 17. The cargo floor system for aircraft of claim 16, wherein: the beams extend generally parallel to each other and each include a web extending generally transverse to the floor, andeach of the roller modules has opposite ends respectively mounted on the webs of adjacent ones of the beams. 18. The cargo floor system for aircraft of claim 16, wherein: the beams extend generally parallel to each other and each include a web extending generally transverse to the floor, andeach of the roller modules has opposite ends respectively mounted on the webs of adjacent ones of the beams. 19. The cargo floor system for aircraft of claim 15, further comprising: a plurality of covers for respectively covering the openings when the rollers are retracted beneath the floor. 20. The cargo floor system for aircraft of claim 16, further comprising: means for removably mounting opposite ends of the roller modules on adjacent ones of the beams. 21. The cargo floor system for aircraft of claim 15, wherein each of the roller modules includes: a plurality of rollers for engaging the cargo, anda carrier on which the rollers are mounted. 22. The cargo floor system for aircraft of claim 15, wherein each of the roller modules includes: a housing, and,a scissors mechanism mounting the roller on the housing for shifting movement between the extended and retracted positions. 23. The cargo floor system for aircraft of claim 22 wherein the mechanism includes: arms forming a scissors assembly, anda motor connected to the arms for displacing the scissors. 24. The cargo floor system for aircraft of claim 23, wherein: the motor is a hydraulic cylinder having first and second ends, andcertain of the arms are pivotally connected to the first and second ends of the hydraulic cylinder. 25. The cargo floor system for aircraft of claim 22 wherein the mechanism includes: a carrier, the roller being mounted on the an extendable scissors assembly mounting the carrier on the housing, anda motor connected with the scissors assembly for extending and retracting the scissors assembly. 26. The cargo floor system for aircraft of claim 22, wherein the scissors mechanism includes a carrier, andthe module includes a plurality of the rollers mounted for rotation on the carrier and aligned along a direction of travel of the cargo over the floor. 27. A method for moving cargo on a cargo floor within a vehicle, comprising: providing a roller module for said cargo floor;operating said roller module by a scissoring mechanism from a retracted position to an extended position in which at least one roller extends above said cargo floor of said vehicle; andpositioning said cargo by engaging said roller to move the cargo within said vehicle over the roller module. 28. The method for moving cargo within a vehicle according to claim 27 further comprising the step of disposing said at least one roller and said scissors mechanism within a roller module housing when said at least one roller is in its retracted position. 29. The method for moving cargo within a vehicle according to claim 27 further comprising the step of forming said scissors mechanism by a plurality of arms. 30. The method for moving cargo within a vehicle according to claim 29 further comprising the step of connecting a motor to said plurality of arms for operating said scissors mechanism. 31. The method for moving cargo within a vehicle according to claim 30 further comprising the step of connecting a hydraulic cylinder as said motor to pivotally operating at least certain of said plurality of arms. 32. The method for moving cargo within a vehicle according to claim 27, further comprising the steps of: mounting said roller module on a carrier;mounting said carrier on said scissors mechanism; andconnecting a motor to said scissors mechanism to extend and retract the scissors mechanism. 33. The method for moving cargo within a vehicle according to claim 27 further comprising the step of: providing extendable arms for said scissors mechanism, andremovably mounting said carrier on said extendable arms. 34. The method for moving cargo within a vehicle according to claim 27 further comprising the step of operating said scissors mechanism for shifting said at least one roller between a retracted position disposed beneath the cargo floor and an extended cargo-engaging position disposed above the cargo floor. 35. A method for moving cargo on a cargo floor within a vehicle, comprising: providing a roller module for said cargo floor;operating said roller module by a scissoring mechanism from a retracted position to an extended position in which at least one roller extends above said cargo floor of said vehicle;disposing said at least one roller in said scissors mechanism within a roller module housing when said at least one roller is in its retracted position;connecting a hydraulic cylinder to a plurality of arms forming said scissors mechanism;aligning said at least one roller in a direction of travel of said cargo over the cargo floor;providing extendable arms for said scissors mechanism; andpositioning said cargo by engaging said at least one roller to move the cargo within said vehicle over the roller module.
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이 특허에 인용된 특허 (6)
Leingang,Alan F.; McConnell,Matthew S.; Wolfe,Robert M., Cargo power drive unit.
Nguyen, Frank H; Williams, Thomas A; Issakhanian, Edmond; Larson, Richard; Gavino, William A; Morse, John E, Power drive unit for cargo handling systems.
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