| 摘要 |
A rod guide 10 may be installed on a sucker rod by two distinct impacts with a hammer or mallet. The rod guide 10 includes a slot 30 having a throat 38 defining therein a catch section 50 wherein a sucker rod 22 will be temporarily caught and held after the first impact. The catch section is spaced between a first restricted throat width and a second restricted throat width of the slot 30. On the second impact, the rod guide 10 is driven relative to the sucker rod past the second restricted throat width and into the rod guide bore 18. An entry port 32 is preferably provided with a radiused opening that widens to a curved surface defining the first restricted throat width. Each opposing wall of the throat 38 may be defined by first, second, and third curvilinear surfaces each having a respective center.
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