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특허 상세정보

Check valve

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F16K-015/03   
미국특허분류(USC) 137/527 ; 137/5157
출원번호 US-0720137 (1985-04-05)
발명자 / 주소
인용정보 피인용 횟수 : 23  인용 특허 : 11
초록

A check valve comprising a valve body with a bore and a counterbore, an insert inside the counterbore, and a flapper with a flapper pin is disclosed. The flapper pin is mounted in a recess in the inside face of the insert. A spring for biasing the flapper toward the closed position is located in a recess in the counterbore face of the valve body.

대표
청구항

A check valve comprising: (a) a valve body having a bore therethrough for the flow of fluid and in the bore a counterbore whose diameter is larger than that of the bore, the counterbore having a counterbore periphery and a counterbore face inside the valve body, the counterbore face being at an angle to the axis of the bore, the counterbore face having a biasing means recess; (b) an insert contained at least partially in the counterbore, the insert having (i) a bore therethrough for the flow of fluid, (ii) an outer periphery that corresponds to and mates...

이 특허를 인용한 특허 피인용횟수: 23

  1. Anderson Bo. Check valve. USP2000026024121.
  2. Bodnar, Bruce A.. Check valve with multiple doors. USP2004096796327.
  3. Bernard, John L.; Hair, Michael L.. Flapper valve. USP2017089745822.
  4. Macrae, Jonathan; Finci, Bulent; Pedraza, Jaime; Schiel, Mark; Porter, Robert Crispin. Flapper valve. USP2013128607876.
  5. Helms Lonnie C. (Duncan OK). Flapper valve with protective hinge pin sleeve. USP1989054825902.
  6. Eagen Duane M. (Norman OK) Meek Robert K. (Norman OK). Jacketed valve. USP1987084687018.
  7. Kirk, Lyn. Non-return valve assembly of the pivoting flap type, typically for insertion in floor drains. USP2015059038660.
  8. Kiezulas, John C.. Pressure relief valve. USP2015028955542.
  9. Scaramucci John P. (10724 Woodridden Oklahoma City OK 73170). Support for check valve disc. USP1989084852607.
  10. Scaramucci John P. (10724 Woodridden Oklahoma City OK 73170). Swing check valve. USP1989104872478.
  11. Scaramucci John P. (10724 Woodridden Oklahoma City OK 73170). Swing check valve. USP1989104872479.
  12. Scaramucci John P. (10724 Woodridden Oklahoma City OK 73170). Swing check valve. USP1989104872480.
  13. Scaramucci John P. (10724 Woodridden Oklahoma City OK 73170). Swing check valve disc. USP1988114781214.
  14. Scaramucci John P. (10724 Woodridden Oklahoma City OK 73170). Swing check valve with hinge pin retainer. USP1990034905728.
  15. Scaramucci John P. (10724 Woodridden Oklahoma City OK 73170). Swing check valve with hinge pin retainer. USP1989054832076.
  16. Scaramucci John P. (10724 Woodridden Oklahoma City OK 73170). Swing check valve with removable cage and disc. USP1988114781212.
  17. Scaramucci John P. (10724 Woodridden Oklahoma City OK 73170). Swing check valve with removable cartridge. USP1989034813451.
  18. Scaramucci John P. (10724 Woodridden Oklahoma City OK 73170). Swing check valve with secured cage. USP1991014982759.
  19. Scaramucci John P. (10724 Woodridden Oklahoma City OK 73170). Swing check valve with secured cage. USP1990114971103.
  20. Scaramucci John P. (10724 Woodridden Oklahoma City OK 73170). Swing check valve with secured cage. USP1991035000223.
  21. Scaramucci John P. (10724 Woodridden Oklahoma City OK 73170). Swing check valve with secured cage. USP1990124977924.
  22. Nagase Toshio (Ibaragi JPX). Tubular connector. USP1991085041131.
  23. James Edward Kellogg AU. Valve assembly for swimming pool cleaning systems. USP2002056393628.