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    • 3. 发明授权
    • Check valve
    • US06651693B2
    • 2003-11-25
    • US10191099
    • 2002-07-09
    • John M. SimmonsTom M. SimmonsDavid M. Simmons
    • John M. SimmonsTom M. SimmonsDavid M. Simmons
    • F16K1504
    • F16K43/00F16K15/04F16K25/00Y10T137/6178Y10T137/7867
    • The check valve (12, 14) of the present invention is a ball-type valve that incorporates multiple annular valve seats (34, 38) of progressively smaller diameters for the specific purpose of providing a series of effective annular valve seats as the larger annular valve seats progressively deteriorate, and as the ball valve elements (24) wear away (decrease in diameter) from use, for example, as abrasive slurry is pumped through the check valves and through the fluid pump. Each of the annular valve seats (34, 38) comprises a flexible or otherwise deformable annular lip defined by a cylindrical section having an annular groove (36, 40) formed therein slightly outboard of the cylindrical section, such that the cylindrical section may deform slightly outwardly into the annular groove, thereby effecting an improved functional sealing engagement with the ball valve element (24) as the tip of the cylindrical section deforms outwardly into the annular groove. As abrasive slurry material is pumped through the fluid pump and through the check valve, the first annular valve seat (34) defined by the cylindrical section and first surrounding annular groove (36) deteriorates and the ball valve element wears away from the flow of abrasive slurry, causing the first annular valve seat to erode away and the ball valve element (24) to wear down (decrease in diameter). The first annular valve seat slowly deteriorates, and therefore increases in diameter, and the ball valve element slowly wears away, decreasing in diameter, to the point where they become no longer effective as a fluid seal. The worn ball valve element then engages a second annular valve seat (38), of the same configuration as the first annular valve seat (34), only necessarily of a smaller diameter than that of the first annular valve seat, and effects a seal therebetween. The combination of the increase in diameter of the first annular valve seat (34) and decrease in diameter in the ball valve element (24) permits the ball valve element to drop further toward the second annular valve seat (38), thereby causing the ball valve element to engage the second annular valve seat.
    • 4. 发明授权
    • Pneumatically shifted reciprocating pump
    • 气动往复泵
    • US5893707A
    • 1999-04-13
    • US810868
    • 1997-03-05
    • John M. SimmonsTom M. SimmonsDavid M. Simmons
    • John M. SimmonsTom M. SimmonsDavid M. Simmons
    • F04B9/135F04B43/113F04B17/00
    • F04B9/135F04B43/1136
    • A pneumatically actuated reciprocating fluid pump and spool valve combination is pneumatically shifted by pressurized air that exhausts from a respective pressurized bellows, diaphragm, or piston chamber, as the bellows, etc. nears the end of its pressure stroke (the exhaust stroke of the pumped fluid). This pressurized air exhausts from the bellows chamber via a shift piston and canister mechanism that seals on the face of the shift canister, rather than on its periphery. The pressurized air exhaust from the bellows chamber acts on the end of the valve spool element to shift the spool element to its opposite position, which reverses the application of pneumatic pressure and atmospheric exhaust between the two bellows chambers to actuate the reciprocating pump.
    • 气动往复流体泵和滑阀组合通过从相应的加压波纹管,隔膜或活塞室排出的加压空气气动地移动,因为波纹管等靠近其压力冲程的结束(泵送的排气冲程 流体)。 该加压空气通过移位活塞和罐机构从波纹管室排出,该移动活塞和罐机构在移位罐的表面而不是在其周边上密封。 来自波纹管室的加压空气排气作用在阀芯元件的端部上,以将阀芯元件移动到其相对位置,这反过来在两个波纹管室之间施加气动压力和大气排气以致动往复泵。
    • 5. 发明授权
    • Multilocation video conference terminal including video switching
contention control
    • 多位视频会议终端包括视频切换争用控制
    • US4531024A
    • 1985-07-23
    • US545206
    • 1983-10-25
    • John R. ColtonDominick ScordoDavid M. Simmons
    • John R. ColtonDominick ScordoDavid M. Simmons
    • H04M3/56H04N7/15H04Q11/04H04M11/00H04M7/14
    • H04N7/15H04M3/561H04M3/568H04Q11/04
    • In a multilocation video conference system, contention for the video to be transmitted to the locations is resolved by employing so-called talker and graphics contention resolution processes. Both the talker and graphics contention processes may be overridden by manual selection of the video to be viewed at each location. In the talker contention process, the video to be transmitted is not switched until one and only one talker location is detected during a predetermined talker timing interval. In the graphics contention process, all requests for graphics transmission are rejected until one and only one graphics transmission request is detected during a predetermined graphics request timing interval. Once transmission of graphics has been assigned to a location, all other locations in the conference are transmitted the graphics video information until the location displaying graphics releases from the graphics transmission mode or there is a manual override. The location transmitting graphics information is transmitted the video from the last of the other locations selected for talker video transmission.
    • 在多位置视频会议系统中,通过使用所谓的谈话者和图形争用解决过程来解决要发送到位置的视频的争用。 谈话者和图形争用过程都可以通过手动选择要在每个位置观看的视频来覆盖。 在讲话人争用处理中,要在被发送的视频不被切换,直到在预定的讲话者定时间隔内检测到一个且仅一个讲话者位置。 在图形争用过程中,对图形传输的所有请求都被拒绝,直到在预定图形请求定时间隔期间检测到仅一个图形传输请求。 一旦图形传输被分配到一个位置,会议中的所有其他位置被传送图形视频信息,直到从图形传输模式显示图形释放的位置或者手动覆盖。 发送图形信息的位置从被选择用于讲话者视频传输的其他位置的最后一个发送视频。
    • 7. 发明授权
    • Reciprocating pumps and related methods
    • 往复泵及相关方法
    • US09360000B2
    • 2016-06-07
    • US13420978
    • 2012-03-15
    • John M. SimmonsTom M. SimmonsDavid M. SimmonsKenji Allen Kingsford
    • John M. SimmonsTom M. SimmonsDavid M. SimmonsKenji Allen Kingsford
    • F04B23/02
    • F04B9/131F04B19/22F04B23/028F04B43/02F04B53/10F04B53/14F04B53/16Y10T29/49236
    • Reciprocating fluid pumps include a pump body including a cavity therein, a plunger located at least partially within the cavity, and a shift canister assembly disposed within the cavity. The shift canister assembly includes a sealing surface for forming a seal against the pump body. An area covered by the seal between the sealing surface and the pump body is less than about 75% of an outer cross-sectional area of the shift canister assembly. The shift canister assembly may include a shift canister and a shift canister cap attached thereto, the shift canister cap comprising the sealing surface. Reciprocating fluid pumps include a shift canister, a shift piston at least partially disposed within the shift canister, and a shift canister cap attached to the shift canister on a longitudinal end of the shift canister opposite the shift piston. Methods include forming such reciprocating pumps.
    • 往复流体泵包括在其中包括空腔的泵体,至少部分地位于空腔内的柱塞和设置在空腔内的换档罐组件。 换档罐组件包括用于形成对泵体的密封的密封表面。 由密封表面和泵体之间的密封件覆盖的区域小于换挡罐组件的外横截面积的约75%。 换档罐组件可以包括移位罐和附接到其上的换档罐盖,换档罐盖包括密封表面。 往复流体泵包括换挡罐,至少部分地设置在换档罐内的换档活塞,以及在换挡罐的与换档活塞相对的纵向端部附接到换挡罐的换档罐盖。 方法包括形成这种往复泵。