Portable unloading platform and ramp
Patent 5026243 Issued on June 25, 1991. Estimated Expiration Date: 
November 1, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 1, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorApplicationNo. 430000 filed on 11/01/1989US Classes:414/401, Means serves to align wheeled vehicle and load receiving or relinquishing structure14/71.1, Attached224/538, Underslung224/549, Collapsible to nonuse position280/166, Shiftable296/37.6, On trucklike vehicle414/522, Laterally movable rigid platform type414/523, Shiftable or removable conveyor unit414/537SkidwayExaminersPrimary: Olszewski, Robert P.Assistant: Bidwell, James R. Attorney, Agent or FirmForeign Patent References
International ClassB65G 067/00AbstractA loading or unloading platform is located and secured in a frame mounted beneath the bottom of a semi-trailer. The platform is removable from underneath the semi-trailer by releasing a lock and pulling the platform out from under the trailer after extension of the retractable wheels of the platform. The platform is then available for use in a locked position adjacent to any door of the semi-trailer. A ramp is used in combination with the platform. The ramp is located underneath the bottom of the semi-trailer in two spaced-apart mounting brackets, one mounting bracket for each end of the ramp. One mounting bracket is fixed in position and includes a lock for locking a bottom end of the ramp underneath the semi-trailer. The other mounting bracket includes a swivel turntable and a pivoting holder for engaging the top end of the ramp.Field of SearchWith means to transfer, or facilitate transfer of, vehicle from carrier to site or vice versaInvolving movement of load by gravity from wheeled vehicle Means serves to align wheeled vehicle and load receiving or relinquishing structure Skidway With haulage means (e.g., cable, etc.) Carrier movable to storage position beneath vehicle Laterally movable rigid platform type Shiftable or removable conveyor unit HANDICAPPED PERSON HANDLING Auxiliary article compartments On trucklike vehicle In or beneath floor level Underslung Movably mounted Vehicle supported Having wall and floor relationship Shiftable Transverse axis Attached Wheeled | |
