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101. 发明授权

US4335339A Electronic safety device 失效
标题翻译：电子安全装置
公开(公告)号：US4335339A
公开(公告)日：1982-06-15
申请号：US95936
申请日：1979-11-20
申请人： Joseph L. Brickner
发明人： Joseph L. Brickner
IPC分类号： F16P3/14 , H02H3/44 , H02H7/085 , E05F15/10 , H02H7/09 , H02P3/00
CPC分类号： F16P3/14 , F16P3/148 , F16P7/00 , H02H3/44 , H02H7/0851
摘要： An electronic safety device circuit is disclosed. This circuit includes two integrated circuit operational amplifiers, the first connected as an operational amplifier and the second connected as a follower. The output pin of the first amplifier is connected to the positive input pin of the second amplifier through a diode. The positive input pin of the second amplifier is connected to a memory capacitor. The output pin of the second amplifier is connected to the negative input pin of the first amplifier. A switching network is provided for grounding the positive input pin of the first amplifier and discharging the memory capacitor.
摘要翻译：公开了一种电子安全装置电路。该电路包括两个集成电路运算放大器，第一个连接作为运算放大器，第二个连接作为跟随器。第一放大器的输出引脚通过二极管连接到第二放大器的正输入引脚。第二放大器的正输入引脚连接到存储电容器。第二放大器的输出引脚连接到第一放大器的负输入引脚。提供了一个开关网络，用于将第一放大器的正输入引脚接地，并对存储电容器进行放电。

102. 发明授权

US3947734A Electronic personnel safety sensor 失效
公开(公告)号：US3947734A
公开(公告)日：1976-03-30
申请号：US503970
申请日：1974-09-06
申请人： Norman F. Fyler
发明人： Norman F. Fyler
IPC分类号： F16P3/14 , G08B13/26
CPC分类号： F16P3/14 , F16P3/148
摘要： An electronic personnel safety sensor is provided capable of causing a machine or operation to be shut off to prevent injury to personnel or damage to equipment protected, by detecting, indicating, and acting upon a predetermined increase or decrease in effective capacitance caused by the introduction, or intrusion, or withdrawal of material to or from a field or protection zone created by a suitably designed and connected electrode structure. The sensor is operable in a fail-safe manner inasmuch as it does not contain any single component, part or electrical connection, the failure or removal of which would cause the sensor to permit the protected machine or operation to operate. The sensor embodies circuitry wherein all activated units thereof are connected in series and are furnished an enabling signal from a common source. The initial signal may be provided from a crystal controlled, amplitude regulated oscillator signal generator source and is AC coupled to a modified null electronic capacity sensing type bridge. The latter bridge has two symmetrically disposed arms, one of which contains a fixed reference capacitor and the other of which contains the combination of an antenna and an adjustable capacitance. The latter is used to bring the two arms of the bridge to the "null" set condition that corresponds with normal operation of the protected machine or implied non-penetration of the protection field. The original signal from the oscillator is modified by the bridge according to the state of balance. The portion of the signal passed on by the bridge is larger at a state of unbalance and a minimum but not zero, at optimum balance. This modulated signal is again AC coupled to the next stage, i.e., an operational amplifier via a suitable transformer but at the input of the operational amplifier the signal is processed to produce rectified AC with a polarized or DC component that in a specific manner in combination with the adjusted characteristics of the operational amplifier causes the latter and the following units including a normally open relay which has been moved to a closed contact position to deenergize, i.e., to completely and precipitously to effectively stop amplifying or passing the original signal if the unbalance of the bridge falls outside of prescribed limits.

103. 发明授权

US3896425A Proximity detector 失效
公开(公告)号：US3896425A
公开(公告)日：1975-07-22
申请号：US40686673
申请日：1973-10-16
申请人： TYCO LABORATORIES INC
发明人： ERICHSEN HERMAN W
IPC分类号： F16P3/14 , G08B13/24 , G08B13/26
CPC分类号： F16P3/148 , G08B13/2491 , G08B13/26
摘要： An improved electrical proximity detector device which includes antenna means for providing an electric field, means for shielding the antenna means, means for driving the antenna and shielding means so as to establish said field, and means for detecting a change in the field caused by a foreign body into the field.

104. 发明授权

US3409842A Protection systems and apparatus 失效
公开(公告)号：US3409842A
公开(公告)日：1968-11-05
申请号：US65044867
申请日：1967-06-30
申请人： ELECTRONIC MACHINE CONTROL SAL
发明人： HARRY EMBLING KENNETH , CAMERON LEBAR LEONARD
IPC分类号： F16P3/14 , H03B5/34
CPC分类号： H03B5/34 , F16P3/148 , Y10T307/766

105. 发明授权

US3406802A Object detection devices 失效
标题翻译：物体检测装置
公开(公告)号：US3406802A
公开(公告)日：1968-10-22
申请号：US58939466
申请日：1966-10-25
申请人： WILMOT BREEDEN LTD
发明人： EDGAR NEEDHAM THOMAS , HUBERT CLAYSON KENNETH
IPC分类号： F16P3/14
CPC分类号： F16P3/148 , Y10S200/21 , Y10T307/766

106. 发明授权

US2554124A Means for automatic control of machinery or other devices 失效
标题翻译：用于自动控制机械或其他设备的手段
公开(公告)号：US2554124A
公开(公告)日：1951-05-22
申请号：US70613446
申请日：1946-10-28
申请人： ZITA WALLACE SALMONT
发明人： SALMONT ANDRE J O A
IPC分类号： B23Q11/00 , F16P3/14 , G01V3/10
CPC分类号： B23Q11/0082 , F16P3/148 , G01V3/101

107. 发明公开

US20240255101A1 DETECTION SYSTEMS FOR POWER TOOLS WITH ACTIVE INJURY MITIGATION TECHNOLOGY 审中-公开
公开(公告)号：US20240255101A1
公开(公告)日：2024-08-01
申请号：US18613586
申请日：2024-03-22
申请人： SawStop Holding LLC
发明人： Stephen F. Gass , John P. Nenadic , Louis R. Slamka
IPC分类号： F16P3/14 , B23D47/12 , B26D7/22 , B27G19/00 , B32B9/00 , H01R39/20 , H01R39/64
CPC分类号： F16P3/148 , B26D7/22 , B32B9/00 , H01R39/64 , B23D47/12 , B27G19/00 , H01R39/20
摘要： Power tools with conductive couplings used with active injury mitigation technology are disclosed. Conductive couplings are particularly relevant to table saws, hand-held circular saws, track saws, miter saws, and band saws with active injury mitigation technology. Conductive couplings provide a mechanism through which an electrical signal can be coupled or imparted to a blade, and then monitored for changes indicative of human contact with the blade. An exemplary conductive coupling includes a brush that establishes an electrical connection with a moving part of a power tool, and the brush maintains contact with the moving part of the power tool during at least 40 hours of cumulative time when the motor is spinning the arbor and blade without an interruption in the electrical connection sufficient to trigger the reaction system. A conductive coupling may be two-sided compliant. A conductive coupling may connect to a motor shaft to minimize electrical noise.

108. 发明公开

US20230286097A1 POWER TOOLS AND METHODS OF OPERATING POWER TOOLS 审中-公开
公开(公告)号：US20230286097A1
公开(公告)日：2023-09-14
申请号：US18001534
申请日：2021-06-24
申请人： Festool GmbH
发明人： Christoph Dieter , Moritz Keller , Dominik Hilpert
IPC分类号： B23Q11/00 , B25F5/00 , F16P3/14
CPC分类号： B23Q11/0082 , B23Q11/0089 , B23Q11/0092 , B25F5/001 , F16P3/148
摘要： Power tools and methods of operating power tools are disclosed herein. The power tools include a motor including a motor shaft configured to rotate about a shaft rotational axis. The power tools also include a sensor assembly configured to generate a differential voltage signal that is indicative of a distance between an individual and a cutting tool being less than a threshold distance. The sensor assembly also is configured to produce a sensor assembly output that is based upon the differential voltage signal. The power tools further include an analysis circuit configured to receive the sensor assembly output and to generate a trigger signal responsive to the sensor assembly output being outside a nominal sensor assembly output range. The power tools also include a mechanical reaction mechanism configured to insulate the individual from the cutting tool responsive to receipt of the trigger signal.

109. 发明授权

US11674642B2 Power tool having object detection 有权
公开(公告)号：US11674642B2
公开(公告)日：2023-06-13
申请号：US17370192
申请日：2021-07-08
申请人： MILWAUKEE ELECTRIC TOOL CORPORATION
发明人： Matthew J. Mergener
IPC分类号： F16P3/14 , B23Q11/00 , B25F5/00 , B23Q17/24
CPC分类号： F16P3/148 , B23Q11/0082 , B23Q11/0092 , B25F5/00 , F16P3/141 , F16P3/142 , F16P3/147 , B23Q17/2438
摘要： A power tool and methods are provided for detecting objects (e.g., flesh or other materials) in the operating path of a power tool's output component (e.g., saw blade or drill bit). An object detection sensor in the power tool generates an output signal indicative of a type of material detected in the operating path of the power tool. A power tool controller receives the object detection sensor output and determines when a material in the operating path of the power tool changes. The controller changes operation of a motor of the power tool (e.g., increasing or decreasing speed or stopping the motor) in response to the detected material change. The object detection sensor may include, for example, an RF sensor, a capacitive sensor, a camera, a conductivity probe, or an ultrasound probe.

110. 发明授权

US10617565B2 Safety system, apparatus and method 有权
公开(公告)号：US10617565B2
公开(公告)日：2020-04-14
申请号：US15965104
申请日：2018-04-27
申请人： Safe Tool Technology Corporation
发明人： Curt DaRosa
IPC分类号： F16P3/00 , A61F9/02 , G02C1/00 , G02C9/00 , F16P3/14 , G08B21/02 , G02C11/00 , A61F9/00 , G08B21/00 , H04W4/80 , H01R13/639 , H01R13/62 , B25F5/00
CPC分类号： A61F9/02 , A61F9/029 , F16P3/00 , F16P3/147 , F16P3/148 , G02C1/00 , G02C9/00 , G02C11/10 , G08B21/02 , A61F9/00 , B25F5/00 , F16P3/008 , G08B21/00 , H01R13/62 , H01R13/6392 , H04W4/80
摘要： An apparatus for use with an item of personal protective equipment, where the item of personal protective equipment includes a sensor configured to detect when the personal protective equipment is being worn properly by the user. The apparatus is housed within a hand-held power tool that includes a power circuit. The apparatus includes an electrical isolation device configured to prevent current flow in at least one conductor included in the power circuit; a wireless communication device configured to wirelessly couple to a wireless communication device included in the personal protective equipment. The wireless communication device is configured to receive a wireless signal transmitted from the wireless communication device included the personal protective equipment, the wireless signal providing information concerning whether the user is wearing the item of personal protective equipment properly. The electrical isolation device operates to allow current flow in the at least one conductor when the information provided by the wireless signal indicates that the item of personal protective equipment is being worn properly by the user.

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