Peristaltic pump with enhanced tube loading features
Patent 4720249 Issued on January 19, 1988. Estimated Expiration Date: 
May 21, 2006. 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.
May 21, 2006. 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 ReferencesDialysis pump system having over-center cam tracks to lock rollers against tubing Peristaltic roller pump Patent #: 4568255 InventorsApplicationNo. 06/865896 filed on 05/21/1986US Classes:417/477.8Adjustable rollers or slidesExaminersPrimary: Croyle, Carlton R.Assistant: Walnoha, Leonard P. Attorney, Agent or FirmInternational ClassF04B 43/12 (20060101)AbstractA peristaltic pump of the type in which a motor-driven hub rotates hub-carried rollers in stressing engagement against to compress a fluid-carrying tube seated in the pump, thereby to propel the liquid through the tube. The pump is characterized in that the functional positioning or loading of the fluid-carrying tubing into and the removal of the resiliently compressible, fluid-carrying tubing from the pump housing is facilitated by apparatus for retracting the tube-compression, fluid-impelling rollers radially inwardly toward the core or hub of the pump and away from an outer bounding wall of a channel in which the compressible section of the tubing is seated. The improvement described effectively removes the rollers as physical impediments during loading of the tube into, and during unloading of the tubing from the pump. | |
