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1. 发明授权

EP3585279B1 SURGICAL VIEWING SYSTEM 有权
公开(公告)号：EP3585279B1
公开(公告)日：2023-06-07
申请号：EP18758402.4
申请日：2018-02-22
发明人： Rich, David, B.
IPC分类号： A61B17/17 , A61B90/00 , A61B17/16 , A61B6/12 , A61B6/00

2. 发明公开

EP3585279A1 SURGICAL VIEWING SYSTEM 有权
公开(公告)号：EP3585279A1
公开(公告)日：2020-01-01
申请号：EP18758402.4
申请日：2018-02-22
申请人： Rich, David, B.
发明人： Rich, David, B.
IPC分类号： A61B17/17 , A61B90/00 , A61B17/16

3. 发明专利

CA426176A LIFTING DEVICE FOR RAILWAY RAILS 未知
公开(公告)号：CA426176A
公开(公告)日：1945-03-20
申请号：CA426176D
申请人： RICH DAVID
发明人： RICH DAVID

4. 发明授权

US5274872A Handle and handled implement 失效
标题翻译：把手处理工具
公开(公告)号：US5274872A
公开(公告)日：1994-01-04
申请号：US846963
申请日：1992-03-06
申请人： David B. Rich
发明人： David B. Rich
IPC分类号： A46B5/00 , B25G3/04 , B25G3/30 , A46B5/02
CPC分类号： A46B5/0095 , B25G3/04 , B25G3/30
摘要： A handle for a handled implement. The handle has a stub, a yoke and a haft. The stub has a shank and a head. The stub has a longitudinal axis. The yoke is disposed on the shank. The yoke abuts the head axially. The yoke is free to rotate about the axis relative to the stub. The yoke has at least one lug disposed in spaced radial relation to the shank. The haft is elongate and engages the head. The haft is joined to the yoke in fixed rotational relation.
摘要翻译：处理工具的手柄。手柄有一个短柄，一个轭和一个。刀柄有柄和头。短截线具有纵向轴线。轭设置在柄上。磁轭轴向与磁头相接。轭可绕相对于短截线的轴线自由旋转。轭具有至少一个与柄相隔成径向关系的凸耳。头部是细长的并与头部接合。磁轭以固定的旋转关系连接到磁轭。

5. 发明授权

US3418808A Gas turbine engines 失效
公开(公告)号：US3418808A
公开(公告)日：1968-12-31
申请号：US60677767
申请日：1967-01-03
申请人： DAVID RICH
发明人： DAVID RICH
IPC分类号： F02C7/18 , F02K3/077
CPC分类号： F02K3/077 , F02C7/18 , Y02T50/675

6. 发明授权

US2502750A Track-aligning device 失效
标题翻译：轨道对齐装置
公开(公告)号：US2502750A
公开(公告)日：1950-04-04
申请号：US60741945
申请日：1945-07-27
申请人： DAVID RICH
发明人： DAVID RICH
IPC分类号： E01B33/04
CPC分类号： E01B33/04 , Y10T74/20684

7. 发明授权

US5307517A Adaptive notch filter for FM interference cancellation 失效
标题翻译：用于FM干扰消除的自适应陷波滤波器
公开(公告)号：US5307517A
公开(公告)日：1994-04-26
申请号：US778501
申请日：1991-10-17
申请人： David A. Rich
发明人： David A. Rich
IPC分类号： H04B1/10 , H04B1/12
CPC分类号： H04B1/1036 , H04B1/123 , H04B2001/1063
摘要： An improved adaptive notch filter for removing undesired cochannel FM interference includes in-phase and quadrature signal processing paths in which the undesired FM signal is translated to zero frequency, i.e. to DC. In each of the in-phase and quadrature phase signal paths, a first multiplier translates the input frequency spectrum in a dynamic manner so that the frequency of the undesired FM signal is always centered on DC. The undesired signal, now at DC, is filtered out by a high pass filter with a sharp rolloff. The output of the high pass filter is remultiplied in a second multiplier to translate the desired FM signal back to the original position in the frequency spectrum. In order to eliminate an unwanted difference frequency remodulation signal at the output of the second multiplier, the quadrature phase signal path performs a parallel operation on the same input signal, but with a quadrature phase (90 degree phase shift) control signal. The output the in-phase and quadrature signal processing circuits are combined in an adder circuit to cancel the unwanted difference frequency remodulation signal.
摘要翻译：用于去除不期望的同频道FM干扰的改进的自适应陷波滤波器包括同步和正交信号处理路径，其中不期望的FM信号被转换为零频率，即到DC。在每个同相和正交相位信号路径中，第一乘法器以动态方式转换输入频谱，使得不期望的FM信号的频率始终以DC为中心。现在处于DC状态的不需要的信号通过高通滤波器被过滤掉，具有清晰的滚降。高通滤波器的输出在第二乘法器中重新乘法，以将期望的FM信号转换回到频谱中的原始位置。为了消除第二乘法器的输出端的不希望的差分再生信号，正交相位信号路径对相同的输入信号进行并行运算，但是以正交相位（90度相移）控制信号。将同相和正交信号处理电路的输出组合在加法器电路中以消除不想要的差分再生信号。

8. 发明授权

US1552756A Harrow 失效
公开(公告)号：US1552756A
公开(公告)日：1925-09-08
申请号：US66343323
申请日：1923-09-18
申请人： ALBERT RICH DAVID
发明人： ALBERT RICH DAVID
IPC分类号： A01B19/02
CPC分类号： A01B19/02

9. 发明专利

GB1151177A Improvements in and relating to Gas Turbine Engines 未知
公开(公告)号：GB1151177A
公开(公告)日：1969-05-07
申请号：GB3048667
申请日：1967-07-03
申请人： RICH DAVID
发明人： RICH DAVID
IPC分类号： F02C7/18 , F02K3/077
摘要： 1,151,177. Cooling gas turbine engines. D. RICH. July 3, 1967 [July 5, 1966; Jan. 3, 1967], No.30486/67. Headings F1G, F1J and F1T. In a gas turbine engine a by-pass duct 28 for cooling air is provided downstream of the lowpressure axial-flow compressor 18 and inward of the high-pressure axial-flow compressor 46, the combustion chamber 26 and the turbine 56. The compressor and turbine blades are secured to the housing 20 mounted on the axial engine shaft 21 rotatable in the nose cap 16 and the tail bullet 62. A by-pass duct 22 may be provided outward of the high-pressure compressor, the combustion chamber and turbine. Turbine cooling air is supplied by the high-pressure compressor 46 through a duct 24a inward of the combustion chamber 26. A turbine cooling duct (33, Fig.6, not shown), may be provided outward of the combustion chamber. Air-flow through the turbine cooling ducts may be controlled to provide little or no flow at reduced engine power. The axial engine shaft (21', Figs.4 and 8, not shown), may extend forward of the nose cap (16') for attachment to a power take-off device, e.g. a propeller.

10. 发明专利

CA420472A TIE-SPACING DEVICE 未知
公开(公告)号：CA420472A
公开(公告)日：1944-05-30
申请号：CA420472D
申请人： RICH DAVID
发明人： RICH DAVID

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