Piston of refractory materials, particularly for compression-ignition engines
Patent 4651629 Issued on March 24, 1987. Estimated Expiration Date: 
May 3, 2004. 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 3, 2004. 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 References 1089823 1494483 1572325 2059713 3173345 Internal combustion engine ଲ'-Sialon sintered body and a method for manufacturing the same Piston assembly for an internal combustion engine Patent #: 4433616 InventorAssigneeApplicationNo. 06/607119 filed on 05/03/1984US Classes:92/176, With enclosed insulating space in piston part123/193.6, Piston92/212, With nonmetallic portion92/220, Threaded fastener92/224, End face and skirt periphery of diverse material92/239, With rib or strut means on piston part92/248, Nonmetallic portion92/255Plural separable partsExaminersPrimary: Look, Edward K.Attorney, Agent or FirmInternational ClassesF16J 1/22 (20060101)F16J 1/10 (20060101) F02B 23/06 (20060101) F02F 3/10 (20060101) F02B 23/02 (20060101) F02F 3/12 (20060101) F02F 3/00 (20060101) F02B 3/00 (20060101) F02F 7/00 (20060101) F02B 3/06 (20060101) Foreign Application Priority Data1983-05-05 FRAbstractA piston (2) is of refractory materials, particularly for a compression-ignition engine of the type having a head (4), a skirt (6) and their mutual fastening means. According to the invention, this skirt (6) is formed entirely of a refractory material and has two semicylindrical parts (18, 20) each of which has ribs (22) and a semispherical cavity (36, 38). After assembly, the cavities form a ball joint seat for the small end of a piston rod along a plane containing the longitudinal axis (14) of the piston (2). Application is to compression-ignition engines with high efficiency.Field of SearchWith rotation imparting fluid impinging surface on piston partWith enclosed insulating space in piston part Separate resilient elements secures end face portion to skirt portion Plural separable parts Threaded fastener Specific or diverse material; or welded, brazed or soldered joint With rib or strut means on piston part Nonmetallic portion Plural separable parts Fastening means for parts include resilient element Side wall portion interposed between separable axially spaced rigid members Rigid members connected by coaxial rigid stem or rod Side wall portion and relatively movable piston part having abutting inclined surfaces | |
