Patent ID: 9683651
Date: 2017-06-20
CPC Classifications: F16H

Claim:
1. A lubrication system for a transmission including a gear shaft having therein a lubricating oil supply passage that extends axially and has at least one open end, a housing rotatably supporting the gear shaft, and a cover fastened to the housing by a fastener, the cover having therein a lubricating oil passage, the system comprising: a first tubular portion facing an opening of the gear shaft, protruding from an outer surface of the housing, and having a cavity; a second tubular portion joined to the first tubular portion, the second tubular portion protruding from an inner surface of the cover and having a cavity; and a hollow cylindrical member disposed in the first and second tubular portions, the first tubular portion having a first enlarged-diameter part axially extending from a joint at which the first tubular portion is joined to the second tubular portion, the second tubular portion having a second enlarged-diameter part that axially extends from the joint and has a diameter identical to that of the first enlarged-diameter part, the first tubular portion including a flange at one end adjacent to the gear shaft, the hollow cylindrical member being fitted in the first and second enlarged-diameter parts of the first and second tubular portions joined to each other, the flange and the opening of the gear shaft defining spacing therebetween.