IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
|
출원번호 |
US-0598049
(2000-06-21)
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발명자
/ 주소 |
- Zimmerman, Patrick J.
- Wagoner, Danny W.
- Stafford, Tyson
- Speller, David
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출원인 / 주소 |
|
대리인 / 주소 |
Moser, Patterson & Sheridan, L.L.P.
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인용정보 |
피인용 횟수 :
113 인용 특허 :
15 |
초록
▼
A bridge plug for use in a wellbore to isolate an upper portion of the wellbore from a lower portion. The bridge plug is run into the wellbore on wireline or run-in tubular and then set in the wellbore at a predetermined depth. In one aspect of the invention, the bridge plug includes a cylindrical b
A bridge plug for use in a wellbore to isolate an upper portion of the wellbore from a lower portion. The bridge plug is run into the wellbore on wireline or run-in tubular and then set in the wellbore at a predetermined depth. In one aspect of the invention, the bridge plug includes a cylindrical body having a longitudinal bore therethrough which is sealed to the passage of fluid. A first and second lock ring assemblies are installed on the outer surface of the body and are designed to move in a single direction with respect to the body. A bidirectional slip member which provides resistance to axial forces in two directions and a sealing member is located on the exterior of the body. A sealing member is disposed between the first and second lock ring assemblies and is actuated by movement of the first ring towards the second ring.
대표청구항
▼
A bridge plug for use in a wellbore to isolate an upper portion of the wellbore from a lower portion. The bridge plug is run into the wellbore on wireline or run-in tubular and then set in the wellbore at a predetermined depth. In one aspect of the invention, the bridge plug includes a cylindrical b
A bridge plug for use in a wellbore to isolate an upper portion of the wellbore from a lower portion. The bridge plug is run into the wellbore on wireline or run-in tubular and then set in the wellbore at a predetermined depth. In one aspect of the invention, the bridge plug includes a cylindrical body having a longitudinal bore therethrough which is sealed to the passage of fluid. A first and second lock ring assemblies are installed on the outer surface of the body and are designed to move in a single direction with respect to the body. A bidirectional slip member which provides resistance to axial forces in two directions and a sealing member is located on the exterior of the body. A sealing member is disposed between the first and second lock ring assemblies and is actuated by movement of the first ring towards the second ring. lly in alignment with the heater air exit surface, said first distance defining a depth of said mixing spaces, said mixing space depth being selected to provide cool air flow in each mixing space in a direction substantially parallel to the air exit surface of the heater, as cool air flows from the mixing space inlet to the mixing space outlet, whereby there results a compact system in which the mixing spaces add little to the horizontal depth of the system. 4. A heating or air-conditioning system according to claim 3, further comprising a generally planar air-conditioning evaporator oriented essentially vertically in the housing and positioned a second distance upstream of the heater, wherein said second distance is relatively small, such that a portion of the heater is positioned substantially adjacent to the evaporator, whereby there results a compact heating/air-conditioning system having a horizontal depth comprised essentially of the sum of the depths of the evaporator, the heater and the mixing spaces. 5. A heating or air-conditioning system according to claim 1, wherein the first, second, third, and fourth mixing spaces are separated by respective dividing walls. 6. A heating or air-conditioning system according to claim 1, wherein each of the first, second, third, and fourth air control elements comprises a mixing flap. 7. A heating or air-conditioning system according to claim 6, wherein each of the first, second, third, and fourth mixing flap is a swivel flap including a swivel axis arranged on a lower edge of the heater. 8. A heating or air-conditioning system according to claim 1, wherein the heater comprises a heat exchanger through which coolant for a power plant of the motor vehicle flows, and further includes an auxiliary heater arranged downstream of the heat exchanger, the auxiliary heater including auxiliary heating elements. 9. A heating or air-conditioning system according to claim 6, wherein at least two of the first, second, third, and fourth mixing flaps are coupled. 10. A heating or air-conditioning system of claim 1, further comprising a cold air bypass disposed above the heater. 11. A heating or air-conditioning system according to claim 1, wherein at least one mixing space further includes a nonreturn flap, the nonreturn flap including a plurality of louvered vanes disposed between the heater and the at least one mixing space, and wherein the nonreturn flap, in a closed position, covers a portion of an air exit surface of the heater. 12. A heater or air-conditioning system according to claim 11, wherein the vanes of the nonreturn flap open in a downward orientation toward the cool-air sub-duct and the vanes, in their open position, guide warm air exiting from the heater toward cool air entering the at least one mixing space. 13. A heater or air-conditioning system according to claim 12, wherein each of said four mixing spaces includes one of said nonreturn flaps. 14. A heater or air-conditioning system according to claim 3, wherein the heater and said housing portion are inclined from vertical. 15. A compact heating or air-conditioning system providing separately conditioned air to four individual zones in a motor vehicle passenger compartment, comprising: a housing; a generally planar heater located in said housing, said heater having a heated air exit surface and having a bottom and a top end defining a height of the heater, and said heater being oriented generally vertically within the housing; an interior partition in said housing defining an air inlet opening for the heater; first, second, third, and fourth parallel cool-air sub-ducts extending below the heater; first, second, third, and fourth axially elongated air mixing spaces communicating respectively with and positioned downstream of the first, second, third, and fourth sub-ducts, the first, second, third, and fourth mixing spaces having an air inlet at the bottom end of the heater and having an air exit at the top end of the heat
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