Abstract: An improved slider block for a scroll compressor has a bore including two spaced circular portions centered on a common axis. A recess is formed into one of the curved portions to provide additional clearance for movement of an eccentric pin. The recess allows the eccentric pin to move within the bore, as the relative position of the slider block and the eccentric pin move and change during operation of the scroll compressor. In a further embodiment, chamfers are formed at circumferential ends of a non-drive flat surface to merge that non-drive flat surface into the circular portions. This will ensure the slider block is properly positioned on smaller eccentric pins.

Abstract: An oil spout is drilled in the crankcase of a scroll compressor between the outer seal and the coupling. The oil spout intersects the oil return chamber to redirect a portion of the oil exiting the oil return passage to the lower surface of the orbiting scroll between the outer seal and the coupling. It is preferred that the oil spout be substantially perpendicular to and smaller in diameter than the oil return passage. The oil spout provides a continual flow of additional lubrication to the outer seal and the coupling, preventing excessive wear of the outer seal and improving overall seal reliability.

Abstract: An oil spout is drilled in the crankcase of a scroll compressor between the outer seal and the coupling. The oil spout intersects the oil return chamber to redirect a portion of the oil exiting the oil return passage to the lower surface of the orbiting scroll between the outer seal and the coupling. It is preferred that the oil spout be substantially perpendicular to and smaller in diameter than the oil return passage. The oil spout provides a continual flow of additional lubrication to the outer seal and the coupling, preventing excessive wear of the outer seal and improving overall seal reliability.

Abstract: An improved Oldham coupling ring is relatively easy to manufacture. Opposed circular arc portions are connected by angled portions to opposed flat portions. The circular arc portions are centered on a common center. As such, the invention is relatively easy to manufacture when compared to prior art systems.

Abstract: An improved Oldham coupling ring is relatively easy to manufacture. Opposed circular arc portions are connected by angled portions to opposed flat portions. The circular arc portions are centered on a common center. As such, the invention is relatively easy to manufacture when compared to prior art systems.

Abstract: An improved slider block for a scroll compressor has a bore including two spaced circular portions centered on a common axis. A recess is formed into one of the curved portions to provide additional clearance for movement of an eccentric pin. The recess allows the eccentric pin to move within the bore, as the relative position of the slider block and the eccentric pin move and change during operation of the scroll compressor. In a further embodiment, chamfers are formed at circumferential ends of a non-drive flat surface to merge that non-drive flat surface into the circular portions. This will ensure the slider block is properly positioned on smaller eccentric pins.

Abstract: An improved slider block for a scroll compressor has a bore including two spaced circular portions centered on a common axis. A recess is formed into one of the curved portions to provide additional clearance for movement of an eccentric pin. The recess allows the eccentric pin to move within the bore, as the relative position of the slider block and the eccentric pin move and change during operation of the scroll compressor.

Abstract: An improved slider block for a scroll compressor has a bore including two spaced circular portions centered on a common axis. A recess is formed into one of the curved portions to provide additional clearance for movement of an eccentric pin. The recess allows the eccentric pin to move within the bore, as the relative position of the slider block and the eccentric pin move and change during operation of the scroll compressor.

Abstract: An improved check valve for a scroll compressor has a stop body which has a contact face which is reduced in surface area to reduce the stiction or holding force holding the valve at shut down. In this way, the valve is allowed to move to its closed position more rapidly.

Abstract: A scroll compressor has a fixed scroll and an orbiting scroll nested with one another within a shell. A hub extends axially from a lower surface of the orbiting scroll with a central bore formed therein. A crankshaft, having an eccentric pin extending axially from one end thereof, is drivable by a motor. A passageway for the delivery of a lubricant extends through the crankshaft and the eccentric pin. A slider block is received by the central bore, and a pin bore, which extends axially through the slider block, receives the eccentric pin. An axially extending projection maintains a gap between the slider block and the orbiting scroll which enhances the flow of lubricant to bearing surfaces of the scroll compressor.

Abstract: A method of forming a drive surface on an eccentric pin of a drive shaft for a scroll-type compressor is provided. First, an eccentric pin having an axis and a generally cylindrical outer surface disposed radially about the axis is provided. Next, a broaching tool having a machining face with a contour is provided. The contour may be a concave shallow bell-shaped curve. Finally, the drive surface is formed by engaging the outer surface with the machining face transverse to the axis. In this manner, the machining face forms a shape complementary to the contour on the eccentric pin thereby forming a slight crown on the drive surface. The broaching tool produces an adequate surface finish so that no subsequent machining operations to the drive surface are necessary.

Abstract: A scroll compressor has a fixed scroll and an orbiting scroll nested with one another within a shell. A hub extends axially from a lower surface of the orbiting scroll with a central bore formed therein. A crankshaft, having an eccentric pin extending axially from one end thereof, is drivable by a motor. A passageway for the delivery of a lubricant extends through the crankshaft and the eccentric pin. A slider block is received by the central bore, and a pin bore, which extends axially through the slider block, receives the eccentric pin. An axially extending projection maintains a gap between the slider block and the orbiting scroll which enhances the flow of lubricant to bearing surfaces of the scroll compressor.