IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
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| 출원번호 |
US-0952525
(2001-09-14)
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발명자
/ 주소 |
- Terpay, Gregory Weston
- Ernst, Ronald G.
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| 출원인 / 주소 |
- General Dynamics Advanced Information Systems, Inc.
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| 대리인 / 주소 |
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| 인용정보 |
피인용 횟수 :
0 인용 특허 :
63 |
초록
▼
A seal assembly is provided for use in a hydraulic actuator of the type including a cylinder, a piston movably disposed in the cylinder, and a piston rod connected to the piston and extending from an end of the cylinder. The seal assembly comprises a seal member formed of a material impervious to hy
A seal assembly is provided for use in a hydraulic actuator of the type including a cylinder, a piston movably disposed in the cylinder, and a piston rod connected to the piston and extending from an end of the cylinder. The seal assembly comprises a seal member formed of a material impervious to hydraulic fluid and having an inner edge and an outer peripheral edge. The inner edge of the seal member defines a central opening which is larger than the outside diameter of the piston rod for receiving the rod. The outer edges of the seal member are attached adjacent the end of the cylinder so that the inner edge of the seal member is radially spaced from the outside diameter of the piston rod and the seal member forms a fluid impervious wall for preventing hydraulic fluid from contacting the elastomeric portion of the bearing assembly.
대표청구항
▼
A seal assembly is provided for use in a hydraulic actuator of the type including a cylinder, a piston movably disposed in the cylinder, and a piston rod connected to the piston and extending from an end of the cylinder. The seal assembly comprises a seal member formed of a material impervious to hy
A seal assembly is provided for use in a hydraulic actuator of the type including a cylinder, a piston movably disposed in the cylinder, and a piston rod connected to the piston and extending from an end of the cylinder. The seal assembly comprises a seal member formed of a material impervious to hydraulic fluid and having an inner edge and an outer peripheral edge. The inner edge of the seal member defines a central opening which is larger than the outside diameter of the piston rod for receiving the rod. The outer edges of the seal member are attached adjacent the end of the cylinder so that the inner edge of the seal member is radially spaced from the outside diameter of the piston rod and the seal member forms a fluid impervious wall for preventing hydraulic fluid from contacting the elastomeric portion of the bearing assembly. y horizontally movable pressing elements for compressing the mail piece stack, in a horizontal base position of the mail piece container, through the gripping recesses; movable holding supports that can be tilted, having conveyor belts that can be driven, that take over the compressed mail piece stack in the container and hold it; a holding and positioning device, which can be tilted, for the mail piece container; a base plate that can be tilted and moved; and a control unit, as well as sensors, for controlling the operation of the unloading device. 5. Device according to claim 4, characterized by a movable check wall for supporting the mail piece stack, once it has been tilted, when it is tilted by more than 90° from its horizontal position. 6. Device according to claim 4, characterized by a horizontally oriented transport conveyor for bringing on the mail piece container and for carrying it away. g insert of claim 6, wherein the cobalt is present at about 0.25% by volume. 8. The ceramic cutting insert of claim 1, further comprising a carbide, nitride, oxide and/or boride having a free energy of formation less than that of the respective carbide, nitride, oxide and/or boride of tungsten, present in the amount from about 0.1% to about 1% by volume. 9. A ceramic cutting insert for high speed machining with a chip control groove surface consisting essentially of polycrystalline tungsten carbide wherein an iron group element is present from about 0.01% by volume to about 0.25% by volume and the polycrystalline tungsten carbide: (a) has a density of at least 98% of its theoretical density; and (b) an average grain size of 0.001 to 10 micrometers. 10. The ceramic cutting insert of claim 9, wherein the iron group element is selected from the group consisting of iron, nickel, and cobalt. 11. The ceramic cutting insert of claim 9, wherein the iron group element is cobalt. 12. The ceramic cutting insert of claim 11, wherein cobalt is present at about 0.25% by volume. 13. The ceramic cutting insert of claim 9, further comprising a carbide, nitride, oxide and/or boride having a free energy of formation less than that of the respective carbide, nitride, oxide and/or boride of tungsten, present in the amount from about 0.1% to about 1% by volume. ires operators to cease the unloading of sulfur pellets from a marine vessel whenever wind speed exceeds 18 miles per hour for a 5-minute time span.
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