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公开(公告)号：US20100084028A1
公开(公告)日：2010-04-08
申请号：US12287126
申请日：2008-10-06
申请人： Rodney Matthews
发明人： Rodney Matthews
IPC分类号： F16K15/00
CPC分类号： F16K15/026 , Y10T137/7925
摘要： A pilot-to-open soft seat check valve having a soft seat and zero leakage is described. The check valve includes a valve body with a poppet bore and an annular valve seat around the bore; a poppet moveable axially between open and closed positions within the bore, the poppet having an annular valve face; a spring urging the poppet to its closed position with the annular valve face against the valve seat; an annular O-ring clamp around the bore adjacent the valve seat, the clamp including an annular O-ring channel with a radially inward open groove exposing the O-ring to the bore; and a resilient O-ring within the channel, whereby the poppet contacts the O-ring ring when the poppet is in its closed position and the O-ring is held in the O-ring channel by the O-ring clamp when the poppet is in its open position.
摘要翻译： 描述了具有软座椅和零泄漏的先导开启软座椅止回阀。 止回阀包括具有提升孔的阀体和围绕孔的环形阀座; 提升阀在孔内的打开和关闭位置之间轴向可移动，提升阀具有环形阀面; 弹簧将所述提升阀推向其关闭位置，其中所述环形阀面抵靠所述阀座; 围绕邻近阀座的孔的环形O形圈夹具，夹具包括环形O形环通道，其具有将O形环暴露于孔的径向向内敞开的槽; 以及在通道内的弹性O形环，由此当提升阀处于其关闭位置时，提升阀与O形圈环接触，并且当提升阀为O形环时，O形环由O形圈夹具保持在O形环通道中 处于开放状态。
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公开(公告)号：US10130504B1
公开(公告)日：2018-11-20
申请号：US15637260
申请日：2017-06-29
申请人： Rodney Matthews
发明人： Rodney Matthews , Dave Cormier
摘要： A foot support for a prosthetic boot has a shape-holding layer and cushion layers on opposite sides of the shape-holding layer. Covers made of nylon and vinyl laminates surround the layers. The vinyl laminates are fused by welding edges of the cover around the foot support. The edge welding surrounds the foot support. An inner parallel welding holds a valve and forms an inflation passage. The inner welding continues around concave curved edges of the shape-holding and cushion layers and terminates where it rejoins the outer welding, forming an inflatable tarsal and metatarsal supporting chamber. A small hard pump has two ends to either increase or reduce pressure in the supporting chamber.
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