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    • 1. 发明专利
      GB255163A Improvements in or relating to wireless and like receiving systems provided with sound-filtering devices 未知
    • Improvements in or relating to wireless and like receiving systems provided with sound-filtering devices
    • GB255163A
    • 1926-07-19
    • GB1018325
    • 1925-04-18
    • OSCAR CHRISTIAN ROOS
    • H04B1/10
    • 255,163. Roos, O. C. April 18, 1925. Atmospherics and undesired signals, eliminating; tone or group frequency itining-arrangements.-The energy due to shock excitation by atmospherics is converted into stationary waves of definite frequency in a closed tubular resonator or the like; the heterodyne beat note is adjusted to a harmonic or other simply related frequency, and the two are then separated by means of acoustic wave-filters. The pitch allotted to the shock note is preferably that of the most prominent interfering note arising from undesired signals, so that the two may be suppressed together. The resonators may contain liquid media instead of air. General arrangement. The loud-speaker telephone 1, Fig. 1, when affected by an atmospheric, gives rise to a shock note in the " percussion chamber " 2, setting up stationary waves in the resonator or " echo chamber " 9. Similar waves, of different frequency, are set up by the desired signal note, their pressure nodes being differently located from those of the shock note (" dephased "). The end 15 of a telescopic tube 11, 12, tuned to the signal note, is located at a pressure node of the desired waves; this tube communicates with a further filter chamber 10. The desired pressure variations are then applied to one focus of the ellipsoidal or paraboloidal " reflection absorption chamber " 28, at the other focus of which is a telephonic detector 40. The signals are observed, after amplification, in a telephone T shunted by an audibility meter N. As an alternative to the above arrangements, the resonator 9 or 10 may be selectively tapped by means of " counterphase tubes " such as 50, 51, Fig. 11, using the principle of phase interference. The resonators mav be shielded from external sound by enclosing them in felt-lined containers or the like. Percussion chambers. The pitch of the note produced by shock excitation of the loud-speaker is determined by the percussion chamber 2, Fig. 1. This may alternatively take the form of a short tube comprising a dowel 45, Fig. 20, which may be formed in two axially adjustable parts (not shown). There may be a gap open to the air between the loud-speaker and the percussion chamber, or the loud-speaker may speak directly into an open chamber or through adjustable tubes 89, 90, into two open chambers 93, 94, Fig. 20, the length of each chamber being a quarter of the wavelength of the note to be suppressed. Selective tapping of resonators. The desired heterodyne signal note is adjusted until its frequency bears a simple relation to that of the shock note to be suppressed; in Figs. 1 and 4 the signal note is the octave of the shock note. The lengths of the chambers are so arranged that, as illustrated in Fig. 4, the signal note has a pressure loop Pn, while the shock note has a pressure node Pn at the middle of the chamber 9. The end 15 of the coupling tube 11, 12, is therefore located at this point, while the other end 16 is located at the end of the next chamber 10, where both notes have pressure loops. The input end 32 of the next coupling tube is similarly located at a point where only the signal will be selected. The telescopic coupling tube 11, 12, which is tuned to the signal frequency, is formed at its ends with lateral holes partially and adjustably covered by discs 17, 18, 19, 20. By narrowing the gaps between the discs selected can be increased at the expense of intensity. A damping partition 27, comprising a sheet of felt or the like or a wooden disc having holes filled with sound-absorbing material, is placed at some point where the signal wave has a velocity node while the shock wave has a velocity loop, or the resonators may be internally constricted by shaped hollow plugs at the pressure nodes of the signal. In the arrangement shown in Fig. 11 the shock note is the octave of the signal note. Tuned coupling tubes 50, 51, lead to a chamber 56 from points in the resonator 47 so chosen that the shock disturbances interfere and produce no variation of pressure in the chamber 56, while the signal disturbances produce a maximum variation. One of the tubes may be constricted to allow for inequality of the disturbances therein. A number of variations in the details of the construction are described in the Specification, and several different ratios of shock frequency to signal frequency are discussed. Toroidal filter chamber. Certain frequencies may be eliminated by admitting sound from the percussion chamber 45, Fig. 22, through tubes 99, 102, to a number of equally spaced points in an adjustable toroidal chamber 98, and tapping off the sound through tubes 104. The peripheral length of the ring is double the wave-length of the sound to be eliminated so that certain frequencies, including the fundamental and the suboctave, will be balanced out and will have no effect. Ellipsoidal or paraboloidal chambers for selective absorption of sound. The interior of the " reflection absorption chamber " 28, Fig. 1, is an ellipsoid of revolution whose major axis is equal to the signal wave-length. A central sound-absorbing partition 37 is provided, or the two halves of the chamber may be slightly separated so as to leave a central air gap. The dimensions of the chamber may be adjusted by moving the end plugs 38, 39. Alternatively the two halves of the chamber may be paraboloids of revolution separated by a substantial distance. Instead of having discs 34 the tube 29 may simply be open at its end, and a chamber of the type described may be inserted at an earlier point in the chain of filters shown in Fig. 1.
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 2. 发明专利
      GB181047A Improvements in electromagnetic-wave transmitting systems 未知
    • Improvements in electromagnetic-wave transmitting systems
    • GB181047A
    • 1922-05-19
    • GB257621
    • 1921-01-19
    • OSCAR CHRISTIAN ROOS
    • H03H2/00
    • 181,047. Roos, O. C. Jan. 19, 1921. Arc oscillation generators; harmonics, absorbing.-One or more undesired frequencies or harmonics from a high-frequency source are eliminated from radiation by means of tuned circuits associated with the antenna, such circuits offering a low impedance to each of the undesired frequencies but a high impedance to the particular frequency that it is desired to transmit. The invention is described in connection with an arc generator, and it is stated that one of the eliminated frequencies may be the fundamental, the selected frequency for radiation then being a higher harmonic of relatively short wave-length. 'The energy of the undesired frequencies so bypassed is rectified and fed back to the source. In the simple form shown in Fig. 2, the circuit C P' L is shunted across the arc A, and is so tuned as to absorb the undesired frequency whilst offering a high impedance to the frequency to be radiated. The energy of the absorbed frequency is translated to the secondary coil S , and is rectified by the device V. The resulting unidirectional current is fed back to the arc through a regulator R (which may be a storage battery) and choke coils I . In other circuit arrangements, a series of parallel-branch circuits are connected in shunt across the arc, having a maximum impedance at the frequency to be radiated, and one or other of the circuits offering a minimum impedance to the frequencies to be absorbed. The preferred form, in which two undesired frequencies are eliminated, is shown in Fig. 5. The circuit C P is tuned to one parasitic frequency, and the circuit C' P to another. The circuit C' L is tuned so that the total impedance of the shunt network is very high at the desired radiation frequency, which is therefore not diverted. The energy of the absorbed oscillations is fed to the rectifier V by the serially-connected secondaries S , S and is passed back to the arc.
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 4. 发明申请
      US20140364032A1 BUBBLE TOY DEVICE 审中-公开
    • BUBBLE TOY DEVICE
    • 泡泡玩具
    • US20140364032A1
    • 2014-12-11
    • US14204285
    • 2014-03-11
    • Joshua Kelly , Christian Roos , Lori Forest , Max Armendariz Lalama , Steven Martin Cohen
    • Joshua Kelly , Christian Roos , Lori Forest , Max Armendariz Lalama , Steven Martin Cohen
    • A63H33/28 , A63H33/22 , A63H5/00
    • A63H33/28 , A63H5/00 , A63H33/22
    • The invention is a bubble toy device for producing air bubbles from bubble solution. The invention contains a fan for producing a stream of air and a fan shroud to channel the stream of air through a dispensing ring and into an ambient environment. Upon compression of a trigger, an electric circuit is activated which energizes a motor that operates the fan, and also a pump in some embodiments. The pump delivers bubble solution to the dispensing ring, and a trigger activated film producing mechanism attached to the air channel creates a film of bubble solution across the dispensing ring during interaction with an application bar. A separate internal sealed container with external contacts serves as a battery compartment for containment of removably-insertable batteries. This sealed container is accessible on the side of the invention's handle and a door is removeably-attached by use of an attaching device, fastener, or screw. The invention can comprise a lighting system and/or at least one (1) sound producing device.
    • 本发明是一种用于从泡沫溶液中产生气泡的气泡玩具装置。 本发明包括用于产生空气流的风扇和风扇罩，以将空气流引导通过分配环并进入周围环境。 在触发器压缩时，在一些实施例中激活电路来激励操作风扇的电动机以及泵。 泵将气泡溶液输送到分配环，并且附接到空气通道的触发器活化膜产生机构在与施加杆交互期间在分配环上产生气泡溶液膜。 具有外部触点的单独的内部密封容器用作用于容纳可拆卸插入的电池的电池室。 该密封容器在本发明的手柄的侧面可接近，并且门通过使用附接装置，紧固件或螺钉可移除地附接。 本发明可以包括照明系统和/或至少一个（1）声音产生装置。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
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