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公开(公告)号：US5801929A
公开(公告)日：1998-09-01
申请号：US740987
申请日：1996-11-05
Applicant: Kan Cheng
Inventor： Kan Cheng
CPC classification number: H05K7/1023 , H05K3/325
Abstract: Many circuit boards include conventional sockets for receiving optional ICs. Such sockets are soldered to the circuit board during the manufacturing process. However, many of such sockets are wasted because they are never used. Such waste can be eliminated by using a clip-on IC retaining apparatus. It includes a housing, a retaining clip, and four registration holes arranged at the comers of a trace pad on a circuit board. The housing includes a shallow, open cavity on a bottom side for receiving a SMD. Four registration fingers projecting from the bottom of the housing mate with the registration holes on the circuit board to align the pins of the SMD with the trace pad. Ribs on the walls of the cavity slide between the pins to separate and straighten any bent pins. The retaining clip includes four downwardly bent flat springs connected in a rectangular pattern. Four slots in the housing extend vertically between the top thereof and the bottom of the fingers. Hooks projecting from the comers of the clip are positioned through the slots. The tips of the hooks extend out the bottom of the fingers and engage the bottom rims of the registration holes. The clip-on IC retaining apparatus and the IC can be easily installed as necessary by a user anytime after the circuit board is manufactured.
Abstract translation: 许多电路板包括用于接收可选IC的常规插座。 这种插座在制造过程中被焊接到电路板上。 然而，许多这样的插座被浪费，因为它们从未被使用。 可以通过使用夹持IC保持装置来消除这种浪费。 它包括一个外壳，一个固定夹和四个对准孔，它们布置在电路板上的跟踪垫的角上。 壳体包括在底侧的浅的开口腔，用于接收SMD。 从壳体底部突出的四个对准手指与电路板上的对准孔对齐，以使SMD的引脚与迹线板对齐。 空腔壁上的肋在销之间滑动，以分离和拉直任何弯曲的销。 保持夹包括以矩形图案连接的四个向下弯曲的扁平弹簧。 壳体中的四个槽在其顶部和手指的底部之间垂直延伸。 从夹子的角落突出的钩子通过槽定位。 钩的尖端伸出手指的底部，并与配准孔的底部边缘接合。 夹持IC保持装置和IC可以在制造电路板之后随时由用户容易地安装。
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公开(公告)号：US5770911A
公开(公告)日：1998-06-23
申请号：US594011
申请日：1996-01-30
Applicant: Kan Cheng
Inventor： Kan Cheng
CPC classification number: H01L35/00 , Y10S136/293
Abstract: A resonant thermoelectric generator includes a thermoelectric power converter connected in series with a resonant circuit. A current generated by the thermoelectric power converter is cycled back and forth in the resonant circuit. The polarity of the thermoelectric power converter with respect to the resonant circuit is switched back and forth to correspond with the direction of the current. In a second embodiment, the thermoelectric power converter is coupled to the resonant circuit through a transformer, and its polarity is also switched to correspond with the direction of the current. In both embodiments, a negative retarding voltage that builds up in the thermoelectric power converter is eliminated by switching its polarity to always correspond with the direction of the current, so that energy is added to the resonant circuit in each cycle, and power is very efficiently converted from heat directly into electricity.
Abstract translation: 谐振热电发电机包括与谐振电路串联连接的热电功率转换器。 由热电功率转换器产生的电流在谐振电路中来回循环。 相对于谐振电路的热电功率转换器的极性来回切换以对应于电流的方向。 在第二实施例中，热电功率转换器通过变压器耦合到谐振电路，并且其极性也被切换以对应于电流的方向。 在两个实施例中，通过将其极性转换为总是对应于电流的方向来消除在热电功率转换器中积累的负延迟电压，使得在每个周期中将能量加到谐振电路上，并且功率非常有效 从热量直接转化为电力。
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Patent Agency Ranking
公开(公告)号：US11199176B1
公开(公告)日：2021-12-14
申请号：US17467109
申请日：2021-09-03
Applicant: Kan Cheng
Inventor： Kan Cheng
Abstract: A vertical turbine comprising a blade control mechanism including a sun gear engaging a plurality of planetary gears each coupled to blade assemblies. The sun gear has at least half circumference of its teeth removed, as the turbine receives maximum downstream torque in the circumference with teeth and it leaves blades free to rotate in the circumference without teeth for minimum upstream drag. The turbine converts the rotational blades into parallel movement and unidirectional propulsion with minimum turbulence.
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公开(公告)号：US07316081B1
公开(公告)日：2008-01-08
申请号：US10909676
申请日：2004-08-02
Applicant: Kan Cheng
Inventor： Kan Cheng
Abstract: A shoe pad includes air pumping elements for cooling the interior of a shoe. The pumping elements include forward pumping elements for pumping air from back to front, and backward pumping elements for pumping air from front to back. The pad includes an upper sheet attached to a lower sheet. Each pumping element includes a channel on the lower sheet covered by the upper sheet. The channel has an intake and an exhaust. Cavities are distributed along the channel. Resilient blisters on the upper sheet are aligned with the cavities on the lower sheet to define pumps. Each pump has an intake and an exhaust. Flap valves projecting down from the upper sheet are respectively positioned against the intakes of the pumps. Alignment pins projecting down from the top sheet are positioned in alignment holes on the lower sheet.
Abstract translation: 鞋垫包括用于冷却鞋内部的抽气元件。 泵送元件包括用于从后向前抽空气的向前泵送元件和用于从前向后抽空气的向后抽吸元件。 垫包括附接到下片的上片。 每个泵送元件包括由上片覆盖的下片上的通道。 通道有进气和排气。 洞穴沿着通道分布。 上片上的弹性泡罩与下片上的空腔对准以形成泵。 每个泵都有进气和排气。 从上部片材向下伸出的挡板分别位于泵的入口处。 从顶片向下突出的对准针定位在下片上的对准孔中。
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公开(公告)号：US20210071635A1
公开(公告)日：2021-03-11
申请号：US16563921
申请日：2019-09-08
Applicant: Kan Cheng
Inventor： Kan Cheng
Abstract: A vertical wind turbine with rotatable wind blades. Under wind pressure, each blade is capable to rotate and stop at a specified location for optimal angle of attack towards the wind to improve the efficiency of the turbine.
Each blade is divided into two unequal area of airfoils with the aerodynamic center of the blade located in the larger area trail end. Under wind pressure, the turbine frame would stop the blades at locations where each blade has an optimal angle of attack towards the wind. As a result, blades in the upwind force zone encounter minimal drag force to improve the efficiency of the turbine.-
公开(公告)号：US20190301361A1
公开(公告)日：2019-10-03
申请号：US15937833
申请日：2018-03-27
Applicant: Kan Cheng
Inventor： Kan Cheng
Abstract: A FAIR engine system includes an air compressor subsystem where oxygen enriched air is compressed, stored and injected into the chambers of a FAIR engine to accelerate the chemical reaction and to reduce harmful mono-nitrogen oxides (NOx) emission
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公开(公告)号：US5960900A
公开(公告)日：1999-10-05
申请号：US878032
申请日：1997-06-18
Applicant: Kan Cheng
Inventor： Kan Cheng
Abstract: Torque is generated by the rotating front road wheel of a motorcycle for balance. When the vehicle is traveling too slowly, too little torque is generated for adequate balance, and when the vehicle is traveling too quickly, too much torque is generated for safe maneuvering. A torque compensator for a motorcycle thus includes a sensor for detecting the angular momentum of the road wheel. The detected angular momentum is compared to a predetermined optimal angular momentum by a comparator. An electric flywheel attached to the steering fork of the motorcycle is driven at a variable speed to generate a compensating angular momentum equal to the difference between the angular momentum of the road wheel and the optimal angular momentum. When the angular momentum of the road wheel is below the optimum, the flywheel is driven in the same direction as the road wheel to provide supplemental momentum, so that the sum of their momentums is equal to the optimal angular momentum. When the angular momentum of the road wheel exceeds the optimum, the flywheel is driven in the opposite direction as the road wheel to provide a counteracting momentum, so that the sum of their momentums is still equal to the optimal angular momentum. Thus the combined torque of the road wheel and flywheel is always optimized for the best stability and steering response throughout the entire speed range of the vehicle.
Abstract translation: 扭矩由摩托车的前轮转轮产生，用于平衡。 当车辆行驶太慢时，产生足够平衡的转矩太小，当车辆行驶太快时，产生过大的扭矩以进行安全的操纵。 因此，摩托车的扭矩补偿器包括用于检测车轮的角动量的传感器。 通过比较器将检测到的角动量与预定的最佳角动量进行比较。 以可变速度驱动连接到摩托车的转向叉的电动飞轮，以产生等于车轮的角动量与最佳角动量之间的差的补偿角动量。 当车轮的角动量低于最佳时，飞轮的驱动方向与车轮相同，以提供补充动量，使得它们的动量之和等于最佳角动量。 当车轮的角动量超过最佳时，飞轮以与车轮相反的方向被驱动以提供抵消动量，使得它们的动量之和仍然等于最佳角动量。 因此，车轮和飞轮的组合扭矩始终是优化的，以便在车辆的整个速度范围内实现最佳的稳定性和转向响应。
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