[특허]Latch assembly for a pumping system and method therefor

Ford, Michael Brent

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특허 상세정보

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Latch assembly for a pumping system and method therefor

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E21B-017/04 E21B-017/046 E21B-043/12 F04B-047/00 F04B-053/10
출원번호	US-0440909 (2017-02-23)
등록번호	US-10018000 (2018-07-10)
발명자 / 주소	Ford, Michael Brent
출원인 / 주소	Ford, Michael Brent
대리인 / 주소	Weiss & Moy, P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 9

초록
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A latch assembly comprises a top latch portion, a spring, and a valve rod guide. The top latch portion has two prongs with the spring positioned therebetween. The valve rod guide has two corresponding notches to receive the two prongs. When the top latch portion is lowered toward the valve rod guide, the spring compresses against the northern end of the valve rod guide and the prongs engage the notches on the valve rod guide, thus firmly coupling the top latch portion to the valve rod guide. The latch assembly may also have a stabilizer, such as a collet...

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1. A latch assembly for use with a pumping mechanism comprising: a top latch portion, the top latch portion comprising: a body; andat least two prongs extending downwardly from the body, each prong comprising an outer surface and an inner surface, wherein the outer surface of each prong is substantially coplanar with an outer surface of a southern end of the body;a spring coupled to the body of the top latch portion and positioned between the at least two prongs of the top latch portion; anda valve rod guide, the valve rod guide comprising at least two notches adapted to removably engage the inner surfaces of the at least two prongs of the top latch portion. 2. The latch assembly of claim 1 wherein the body of the top latch portion comprises a center channel formed therethrough, wherein the center channel is adapted to receive a valve rod. 3. The latch assembly of claim 2 wherein the center channel of the body of the top latch portion comprises an annular ridge formed therein, wherein a northern end of the spring is received within a southern end of the center channel and abuts the annular ridge. 4. The latch assembly of claim 2 further comprising a stabilizer, wherein a southern end of the stabilizer is coupled to the center channel of the top latch portion proximate a northern end of the top latch portion and wherein the stabilizer comprises a center channel configured to receive a top end of the valve rod. 5. The latch assembly of claim 1 wherein the prongs are L-shaped. 6. The latch assembly of claim 1 wherein the prongs of the top latch portion each have a bottom edge, wherein the bottom edges of the prongs are both flat and positioned horizontally. 7. The latch assembly of claim 1 wherein the prongs of the top latch portion each have a bottom edge, wherein the bottom edges of the prongs both have an angle between approximately 30° 45°. 8. The latch assembly of claim 1 wherein the valve rod guide comprises a center channel formed therethrough, wherein the center channel is adapted to receive a valve rod. 9. The latch assembly of claim 1 wherein the valve rod guide further comprises at least two upper ridges formed on an outer surface of a northern end of the valve rod guide. 10. The latch assembly of claim 9 wherein the upper ridges are flat and positioned horizontally. 11. The latch assembly of claim 9 wherein the upper ridges slope downwardly in a helical direction, wherein the upper ridges slope downwardly at an angle between approximately 30° 45°. 12. The latch assembly of claim 9 wherein the upper ridges form the at least two notches and also form at least two hooks on the outer surface of the northern end of the valve rod guide, each hook and each notch being adapted to engage a corresponding prong of the top latch portion. 13. The latch assembly of claim 12 wherein each notch comprises a top portion that prevents the corresponding prong of the top latch portion from moving upwardly once the corresponding prong has engaged the hook and the notch. 14. The latch assembly of claim 12 wherein each notch comprises a side portion that prevents the corresponding prong of the top latch portion from moving laterally in one direction once the corresponding prong has engaged the hook and the notch. 15. The latch assembly of claim 12 wherein the valve rod guide further comprises a lower ridge formed on an outer surface of the valve rod guide and positioned between the northern end of the valve rod guide and a middle section of the valve rod guide, wherein the lower ridge forms a bottom portion of each notch. 16. A latch assembly for use with a pumping mechanism comprising: a top latch portion, the top latch portion comprising: a body;a center channel formed through a length of the body, wherein the center channel is adapted to receive a valve rod;an annular ridge formed within the center channel; andat least two prongs extending downwardly from the body, each prong comprising an outer surface and an inner surface, wherein the outer surface of each prong is substantially coplanar with an outer surface of a southern end of the body;a spring received within a southern end of the center channel of the body of the top latch portion and positioned between the at least two prongs of the top latch portion, wherein a northern end of the spring abuts the annular ridge within the center channel of the body of the top latch portion; anda valve rod guide, the valve rod guide comprising: a center channel formed therethrough, wherein the center channel is adapted to receive the valve rod;two upper ridges formed on an outer surface of a northern end of the valve rod guide, wherein the upper ridges form at least two notches and also form at least two hooks on the outer surface of the northern end of the valve rod guide, each hook and each notch being adapted to engage the inner surface of a corresponding prong of the top latch portion. 17. The latch assembly of claim 16 wherein the prongs of the top latch portion each have a bottom edge, wherein the bottom edges of the prongs are both flat and positioned horizontally and wherein the two upper ridges formed on the outer surface of the northern end of the valve rod guide are flat and positioned horizontally. 18. The latch assembly of claim 16 wherein the prongs of the top latch portion each have a bottom edge, wherein the bottom edges of the prongs both have an angle of approximately 40° and wherein the two upper ridges formed on the outer surface of the northern end of the valve rod guide slope downwardly in a helical direction at an angle of approximately 40°. 19. The latch assembly of claim 16 wherein each notch comprises: a top portion that prevents the corresponding prong of the top latch portion from moving upwardly once the corresponding prong has engaged the hook and the notch;a side portion that prevents the corresponding prong of the top latch portion from moving laterally in one direction once the corresponding prong has engaged the hook and the notch, wherein each hook prevents the corresponding prong of the top latch portion from moving laterally in an opposite direction once the corresponding prong has engaged the hook and the notch; anda bottom portion formed by a lower ridge formed on an outer surface of the valve rod guide and positioned between the northern end of the valve rod guide and a middle section of the valve rod guide. 20. The latch assembly of claim 16 further comprising a collet adapter, wherein a southern end of the collet adapter is coupled to the center channel of the top latch portion proximate a northern end of the top latch portion and wherein the collet adapter comprises: a northern end;a center channel configured to receive a top end of a valve rod;a tapered southern end; and a plurality of tapered ears formed by a plurality of slits within the tapered southern end, wherein the tapered ears compress inwardly toward the valve rod to stabilize the valve rod.

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Latch assembly for a pumping system and method therefor

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Latch assembly for a pumping system and method therefor

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이 특허에 인용된 특허 (9)

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