Printed microwave susceptor
    1.
    发明授权
    Printed microwave susceptor 失效
    印刷微波感应器

    公开(公告)号:US5231268A

    公开(公告)日:1993-07-27

    申请号:US845564

    申请日:1992-03-04

    Abstract: Paperboard packaging material for use in the manufacture of containers or inserts for containers for browning and crisping food in a microwave oven is prepared on a printing press. The components of the packaging material include paperboard or an equivalent microwave transparent substrate, a susceptor layer prepared from a printable aqueous susceptor-ink composition, and an intermediate coating applied to the paperboard substrate between the susceptor layer and the paperboard to provide a thermal barrier for the paperboard substrate. The thermal barrier layer may be coated or printed on the paperboard substrate as a substantially uniformly thick layer while the susceptor-ink layer may be pattern-printed on the substrate in varying thickness corresponding to the location of food intended to be packaged in containers prepared from the packaging material. The printed susceptor material is overprinted with a food contact coating. The invention also contemplates the use of pigments or the like in one or more of the food contact layer, susceptor layer or thermal barrier layer to facilitate the release of water vapor from these layers during the microwave heating process.

    Microwave circuit having grounding structure
    2.
    发明授权
    Microwave circuit having grounding structure 失效
    微波电路具有接地结构

    公开(公告)号:US4100516A

    公开(公告)日:1978-07-11

    申请号:US779128

    申请日:1977-03-18

    Applicant: Roger D. Hall

    Inventor: Roger D. Hall

    CPC classification number: H01P1/2135 H01P1/00

    Abstract: A microwave diplexer circuit consists of a stripline conductor carried between two dielectric substrate members, each having a conductive layer serving as a ground plane on its side nonadjacent to the stripline. The substrate members are enclosed in a housing of conductive material including a bottom which contains the substrate members and the stripline conductor, and a top which is fastened to the bottom to make an enclosed unit wherein the housing makes electrical contact with the ground planes. The stripline is formed with a pair of extensions in the form of grounding tabs which extend into small chambers not occupied by the substrate members. In the particular circuit shown, the circuit adjacent the grounding tabs is a high frequency microwave filter including a plurality of stubs. A shorting bar in each of the chambers overlies the tabs and is clamped to the wall of the chamber such that it defines a short at the desired length of each of said plurality of tuning stubs forming the filter. One edge of the shorting bar is of such height that it projects slightly above the chamber. The top housing member includes a slot facing the interior in registry with the projecting edge and filled with conductive rubber such that when the top is fastened to the bottom the edge projects into and penetrates the conductive rubber. This assures a good short or ground from the edge of the shorting bar to the housing and, therefore, to the ground planes.

    Abstract translation: 微波双工器电路由两根电介质基片部件之间的带状导体组成,每个电介质基板部件的导电层在与带状线不相邻的一侧作为接地平面。 衬底构件封装在包括底部的导电材料的壳体中,该底部包含衬底构件和带状导体,以及顶部,其紧固到底部以制造封闭单元,其中壳体与接地面电接触。 带状线形成有一对延伸部,其以接地片的形式延伸到不被衬底构件占据的小室中。 在所示的特定电路中,与接地片相邻的电路是包括多个短截线的高频微波滤波器。 每个室中的短路棒覆盖在突片上并且被夹紧到腔室的壁上,使得其在形成滤光器的所述多个调谐短截线中的每一个的所需长度上限定短路。 短路棒的一个边缘具有如此高的高度,使得它稍微在腔室上方突出。 顶部壳体构件包括面向内部的狭槽,其与突出的边缘对准并且填充有导电橡胶,使得当顶部紧固到底部时,边缘突出并穿过导电橡胶。 这确保了从短路棒的边缘到壳体的良好的短路或接地,并且因此确保了到地平面。

    Tire chopping apparatus
    3.
    发明授权
    Tire chopping apparatus 失效
    轮胎斩波器

    公开(公告)号:US06565026B1

    公开(公告)日:2003-05-20

    申请号:US09940602

    申请日:2001-08-28

    Applicant: Roger D. Hall

    Inventor: Roger D. Hall

    Abstract: A tire chopping apparatus includes a rotor assembly with a plurality of circumferentially and axially spaced rotor teeth which cooperate with a plurality of stationary teeth supported on a shear bar assembly to shearingly engage tire carcasses to reduce the carcasses to smaller fragments. A plurality of axially spaced guards extend outwardly from the shear bar assembly toward the rotor assembly and limit the size of fragments which can pass through a shear zone formed by the interengaging rotary and stationary teeth. The guards may be in the form of bridge plates spanning the rotor assembly or upstanding guard plates which extend upwardly from the shear bar assembly and include a distal end which extends outwardly toward and in horizontally spaced relation to the rotor mandrel.

    Abstract translation: 轮胎斩波装置包括具有多个周向和轴向间隔开的转子齿的转子组件,其与支撑在剪切杆组件上的多个固定齿配合以剪切地接合轮胎胎体,以将胎体减少到较小的碎片。 多个轴向间隔的保护件从剪切杆组件朝向转子组件向外延伸并且限制可通过由相互啮合的旋转和静止齿形成的剪切区的碎片的尺寸。 防护件可以是跨越转子组件或从剪切杆组件向上延伸的直立防护板的桥板的形式,并且包括朝向和相对于转子心轴水平间隔开的向外延伸的远端。

    Varactor frequency multiplier and switching circuit
    5.
    发明授权
    Varactor frequency multiplier and switching circuit 失效
    变频器频率乘法器和开关电路

    公开(公告)号:US4074347A

    公开(公告)日:1978-02-14

    申请号:US724190

    申请日:1976-09-17

    Applicant: Roger D. Hall

    Inventor: Roger D. Hall

    CPC classification number: H03B19/05

    Abstract: A varactor multiplier circuit is driven by a pulsed source of radio frequency and self-biased such that it operates in its snap condition to generate harmonic frequencies. The output pulse has essentially the same configuration and length as the input pulse. These pulse envelopes may have a relatively slow voltage build-up with time. A separate bias drive circuit is directly connected to the varactor and provides a negative-going pulse of sufficient voltage to bias the varactor to its off condition. This gating bias pulse is variable as to pulse width and is very steeply rising and serves to either turn on or cut off the varactor sharply to thus provide a shaped envelope of the output wave form. An isolating capacitor and a band stop filter operate to prevent loading of the multiplier circuit by the bias drive circuit and to prevent radio frequency leakage into the drive circuit. A bandpass filter at the output of the varactor circuit serves to limit the output frequency to the desired harmonic of the input signal. This arrangement permits switching of high frequency signals at comparatively high power without the use of a separate gating stage with its accompanying insertion loss.

    Dual band monopole omni antenna
    7.
    发明授权
    Dual band monopole omni antenna 失效
    双带单极OMNI天线

    公开(公告)号:US4083050A

    公开(公告)日:1978-04-04

    申请号:US719488

    申请日:1976-09-01

    Applicant: Roger D. Hall

    Inventor: Roger D. Hall

    CPC classification number: H01Q9/065 H01Q1/283 H01Q5/321

    Abstract: A dual mode high-frequency printed circuit radar antenna for aircraft use having good aerodynamics is provided in the form of a printed circuit antenna molded into a smooth, blade-like protective shield. The antenna, printed on an epoxy glass substrate carried on a mounting plate including, integrated in series, a stub monopole element and a larger area capacitive loading member for I-band reception, an inductive member whose impedance is very high at I band and a monopole element which adds sufficient length that the entire conductor track acts as a quarter wave length monopole at C and D bands. At I band the stub monopole element and capacitive loading is isolated from the added monopole element by the high impedance inductive member, making for good I-band performance.

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