公开(公告)号：US06220086B1

公开(公告)日：2001-04-24

申请号：US09169007

申请日：1998-10-09

申请人： Philip Lynn Andrew ,  John David Stampfli ,  Pierluigi Nava ,  Marco Mazzoni

发明人： Philip Lynn Andrew ,  John David Stampfli ,  Pierluigi Nava ,  Marco Mazzoni

IPC分类号： F02C700

CPC分类号： F04D27/001 ,  F02C7/057 ,  F02C9/16 ,  F05D2270/101

摘要： The surge pressure ratio of a compressor is determined by transiently reducing the inlet flow to the compressor to increase the compressor pressure ratio sufficiently to produce the surge pressure ratio. The reduction in flow of fluid is maintained for a time period insufficient to exceed the exhaust gas temperature limit for the turbine. The area of the first-stage nozzle of the turbine is reduced and the inlet flow to the compressor is reduced to a steady state to achieve pressure ratios, in close proximity to the surge line. By transiently further reducing the inlet flow to the compressor and then increasing the inlet flow back to the steady-state condition, the surge pressure ratio can be obtained without exceeding machine operational limits.

摘要翻译： 压缩机的喘振压力比通过瞬时减小到压缩机的入口流量来确定，以充分提高压缩机压力比以产生浪涌压力比。 流体的流动减少维持不到超过涡轮机废气温度极限的时间。 涡轮机的第一级喷嘴的面积减小，并且到达压缩机的入口流量减小到稳定状态，以实现紧靠喘振线路的压力比。 通过暂时进一步减小进入压缩机的入口流量，然后将入口流量增加回稳定状态，可以在不超过机器操作限制的情况下获得喘振压力比。

公开(公告)号：US4223410A

公开(公告)日：1980-09-23

申请号：US955920

申请日：1978-10-30

申请人： Pierluigi Nava

发明人： Pierluigi Nava

IPC分类号： A42B1/18 ,  A42B3/00 ,  A42B3/22 ,  A42B3/02 ,  A61F9/04

CPC分类号： A42B3/222

摘要： This invention concerns a tiltable shield or visor C for helmets and the like, which is hinged to the imbedded walls A2 of the helmet by means of articulated members B which, beyond permitting a swinging motion of the shield or visor, allow also a straight motion, to disengage the rim of the said shield or visor from the bottom of the peripheral ledge of the helmet A. In order to facilitate the above mentioned operation, the visor C has, next to the opposed rims thereof, curved notches 16, the curved edges 18 whereof are chamfered toward the inside, to permit and to facilitate the engagement of the fingertips of the rider, in order to separate the locking members 12, 14 which restrain the shield or visor to the helmet.

摘要翻译： 本发明涉及用于头盔等的可倾斜的护罩或遮阳板C，其通过铰接构件B铰接到头盔的嵌入壁A2上，该铰接构件B除了允许护罩或遮阳板的摆动以外还允许直线运动 ，以使所述护罩或遮阳板的边缘脱离头盔A的周边凸缘的底部。为了便于上述操作，遮阳板C在其相对的边缘旁边具有弯曲的凹口16，弯曲的 边缘18向内侧倒角，以允许和便于骑手的指尖的接合，以便将锁定构件12,14分开，从而将护罩或遮阳板限制在头盔上。

公开(公告)号：US4990794A

公开(公告)日：1991-02-05

申请号：US482546

申请日：1990-02-21

申请人： Marco Ferrari ,  Pierluigi Nava

发明人： Marco Ferrari ,  Pierluigi Nava

IPC分类号： F04B51/00 ,  F04D29/66 ,  G01N15/00 ,  G01N21/47

CPC分类号： F04D29/669 ,  F04D15/0088 ,  G01N21/4738 ,  G01N2015/0011

摘要： A sensing-measuring device for the continuous determination of cavitation in dynamic pumps, consisting of an optical probe mounted in proximity to the suction nozzle of the dynamic pump, said probe comprising a light emitter and an optical sensor which are positioned inclined at an angle to each other in such a manner as to perfectly center on the leading edge of the blades.

摘要翻译： 一种用于在动态泵中连续测定气穴的感测测量装置，其由安装在动态泵的吸嘴附近的光学探头组成，所述探头包括光发射器和光学传感器，其位于 彼此以完美地位于叶片的前缘上方的方式。

公开(公告)号：US4247960A

公开(公告)日：1981-02-03

申请号：US973719

申请日：1978-12-27

申请人： Pierluigi Nava

发明人： Pierluigi Nava

IPC分类号： A42B3/00 ,  A42B1/18 ,  A42B3/22 ,  A42B3/02 ,  A61F9/00

CPC分类号： A42B3/222

摘要： A vizor is retained to a helmet A by means of hinging members 22, 24, one member being associated with sliding organs 10, 12 connected with actuating means 26 and 28 by means of which the pivots 20 of the hinges are displaced with respect to the helmet, for the purpose of disengaging the rim of the vizor from a housing A1 located in the opening of the helmet.

摘要翻译： 通过铰链构件22,24将一个动作保持在头盔A上，一个构件与与致动装置26和28连接的滑动器官10,12相关联，通过该构件，铰链的枢轴20相对于 头盔，用于将位置的边缘与位于头盔的开口中的壳体A1脱离。

公开(公告)号：US4242757A

公开(公告)日：1981-01-06

申请号：US915376

申请日：1978-06-14

申请人： Pierluigi Nava

发明人： Pierluigi Nava

IPC分类号： A42B3/22 ,  A42B3/02

CPC分类号： A42B3/222

摘要： The helmet, at its face opening, is provided with a peripheral abutment in which the edge of a transparent shield is housed, such that the visor when closed is flush with the surface of the helmet. Such shield is connected to the helmet structure by articulation members which are connected to members such as multiple hinges comprising links or the like. The length of the hinge members can be varied to allow the shield to be moved away and removed from the peripheral abutment and then tilted.

摘要翻译： 头盔在其开口处设置有周边支座，透明屏蔽的边缘容纳在其中，使得遮盖件在关闭时与头盔的表面齐平。 这种护罩通过连接到构件的连接构件连接到头盔结构，诸如包括链环等的多个铰链。 可以改变铰链构件的长度以允许护罩从外围邻接部移开并移除，然后倾斜。