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公开(公告)号：US4320950A
公开(公告)日：1982-03-23
申请号：US207980
申请日：1980-11-18
申请人： Michio Senuma , Yoji Sugiura , Fumio Shimada
发明人： Michio Senuma , Yoji Sugiura , Fumio Shimada
摘要： In the shutter disclosed, a conductor and a permanent magnet, movable relative to each other, form a driver to drive at least one shutter blade across an optical path for photographic light and the force of the driver is supplemented by an auxiliary spring arrangement that exerts zero force at the start of movement of the shutter blade and gradually increases toward termination of movement of the blade.
摘要翻译： 在所公开的快门中，可以相对于彼此移动的导体和永磁体形成驱动器，以驱动至少一个快门叶片跨越用于照相光的光路，并且驾驶员的力由辅助弹簧装置补充，辅助弹簧装置 在快门叶片的运动开始时的力为零，并且对于叶片的移动终止逐渐增加。
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公开(公告)号：US4364654A
公开(公告)日：1982-12-21
申请号：US279258
申请日：1981-07-01
申请人： Michio Senuma , Fumio Shimada , Yoshihiro Shigeta , Syuichiro Saito , Hiroshi Aizawa , Takehiko Ohniwa , Canon Denshi Kabushiki Kaisha
发明人： Michio Senuma , Fumio Shimada , Yoshihiro Shigeta , Syuichiro Saito , Hiroshi Aizawa , Takehiko Ohniwa , Canon Denshi Kabushiki Kaisha
摘要： In a shutter of the electromagnetic release type arranged to have shutter blades locked by locking members in their charged states and to make an exposure by releasing the shutter blades from the locking members, a first locking member is arranged to lock each of the charged shutter blades while a second locking member is arranged to lock the shutter blade when the shutter blade is released from the first locking member and to have the shutter blade released therefrom by the action of an electromagnet. The releasing torque required for the second locking member is smaller than that of the first locking member.
摘要翻译： 在电磁释放型快门中，其具有被锁定构件锁定在其充电状态的快门叶片并且通过从锁定构件释放快门叶片而进行曝光，第一锁定构件被布置成锁定每个带电快门叶片 而第二锁定构件被布置成当快门叶片从第一锁定构件释放时锁定快门叶片并且通过电磁体的作用使快门叶片从其中释放。 第二锁定构件所需的释放扭矩小于第一锁定构件的释放扭矩。
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公开(公告)号：US4355878A
公开(公告)日：1982-10-26
申请号：US279256
申请日：1981-07-01
申请人： Takehiko Ohniwa , Michio Senuma , Fumio Shimada , Syuichiro Saito , Yoshihiro Shigeta , Hiroshi Aizawa
发明人： Takehiko Ohniwa , Michio Senuma , Fumio Shimada , Syuichiro Saito , Yoshihiro Shigeta , Hiroshi Aizawa
CPC分类号： G03B9/58
摘要： A hold releasing magnetic device so designed that by controlling the current supply to a magnet the armature is displaced relative to the yoke so as to release a held shutter member wherein the armature and the yoke are supported coaxially with each other on the same shaft on a base plate on which the magnetic device is mounted, with the yoke being securable on the base plate.
摘要翻译： 一种保持释放磁性装置，其设计成通过控制向磁体的电流供应，电枢相对于磁轭移位，以便释放保持的快门部件，其中电枢和磁轭在同一轴上同轴地支撑在一个 该基座板上安装有磁性装置，该轭可固定在基板上。
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公开(公告)号：US4382670A
公开(公告)日：1983-05-10
申请号：US342205
申请日：1982-01-25
申请人： Teiji Hashimoto , Michio Senuma , Fumio Shimada
发明人： Teiji Hashimoto , Michio Senuma , Fumio Shimada
CPC分类号： G03B9/18
摘要： Disclosed is a focal plane shutter for a camera having a shutter blade group consisting of a plural number of light shading thin plates held with two arms, so designed that the slit forming blade positioned at the end of the arm and a light shading auxiliary blade positioned next to the above are made to move in parallel by way of a parallel linkage and that a plural number of other auxiliary blades are mounted rotatably around the shaft provided on the one arm and engaged with a common shaft provided on the other arm in such a manner that along with the rotation of the latter arm they are rotated with the latter shaft.
摘要翻译： 公开了一种具有快门叶片组的相机的焦平面快门，该快门叶片组由多个固定有两个臂的遮光薄板组成，设计成使得位于臂的端部处的狭缝形成刀片和位于 通过平行连杆使上述的平行移动，并且多个其他辅助叶片围绕设置在一个臂上的轴可旋转地安装并与设置在另一个臂上的公共轴接合在一起 随着后一个臂的旋转，它们随后一个轴旋转。
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公开(公告)号：US4395105A
公开(公告)日：1983-07-26
申请号：US336497
申请日：1981-12-31
申请人： Michio Senuma
发明人： Michio Senuma
CPC分类号： G03B9/18
摘要： A device for adjusting a focal plane shutter driving spring includes a ratchet wheel which holds one end of the shutter driving spring and is arranged to adjust the driving force of the spring by the rotation thereof. The ratchet wheel is provided with a ratchet part having fine teeth arranged to engage a ratchet pawl and a gear part having relatively coarse teeth.
摘要翻译： 用于调整焦平面快门驱动弹簧的装置包括：一个保持快门驱动弹簧的一端的棘轮，并设置成通过其旋转来调节弹簧的驱动力。 棘轮设置有棘齿部，其具有布置成接合棘爪和具有相对粗齿的齿轮部的细齿。
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公开(公告)号：US4380857A
公开(公告)日：1983-04-26
申请号：US280933
申请日：1981-07-06
申请人： Michio Senuma , Jun Shibuya
发明人： Michio Senuma , Jun Shibuya
CPC分类号： B23P15/00 , G03B9/00 , Y10T29/49798
摘要： A process for manufacturing blades of shutter screens wherein the blades are first formed by punching a metal plated thin plastic sheet material by a first press operation carried out thereon with end parts left connected with other portions of the plastic material. After being coated with a coating material and dried under this condition, the connecting end parts of the blades are cut off the material by a second press operation.
摘要翻译： 一种用于制造闸门筛的叶片的方法，其中叶片首先通过在其上执行的第一压制操作冲压金属镀薄的薄塑料片材，端部与塑料材料的其它部分连接。 在涂覆有涂层材料并在此条件下干燥后，通过第二次压制操作将切断材料的连接端部分。
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公开(公告)号：US4378150A
公开(公告)日：1983-03-29
申请号：US280339
申请日：1981-07-06
申请人： Teiji Hashimoto , Michio Senuma
发明人： Teiji Hashimoto , Michio Senuma
摘要： In an electromagnetically driven focal plane shutter of the type having a trailing screen which moves irrespective as to whether a leading screen is moving, there are provided a detecting member arranged to detect movement of the leading screen and an inhibiting means which inhibits the trailing screen from moving when movement of the leading screen is not detected.
摘要翻译： 在具有拖尾屏幕的类型的电磁驱动焦平面快门中，无论前置屏幕是否正在移动，都会移动，设置有检测构件，用于检测前屏幕的移动，以及抑制装置， 未检测到主屏幕的移动时移动。
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公开(公告)号：US4417797A
公开(公告)日：1983-11-29
申请号：US333563
申请日：1981-12-22
申请人： Michio Senuma
发明人： Michio Senuma
CPC分类号： G03B9/18
摘要： In the disclosed focal plane shutter, desired travelling characteristics of shutter curtains are obtained by adjusting the distribution of magnetic flux density between the permanent magnet and the coil which constitute an electromagnetic drive source. Preferably, the flux density is arranged to be a maximum closer to the start position than the end position.
摘要翻译： 在所公开的焦平面快门中，通过调整构成电磁驱动源的永磁体和线圈之间的磁通密度分布，获得快门帘的理想行驶特性。 优选地，磁通密度被布置为比端部位置更接近起始位置的最大值。
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公开(公告)号：US4326787A
公开(公告)日：1982-04-27
申请号：US254767
申请日：1981-04-16
申请人： Michio Senuma
发明人： Michio Senuma
摘要： A camera shutter having a plurality of shutter blades consisting of thin plastic plates operable by means of a comparatively small driving power, so designed that in order to avoid the formation of slits at the overlapped portions of the shutter blades due to deformation magnetic powder is put in the shutter blade and magnetized along the direction of the thickness in such a manner that the blades attract each other by means of magnetic force.
摘要翻译： 具有多个快门叶片的相机快门，其由薄的塑料板组成，可通过相对小的驱动力操作，被设计为为了避免由于变形磁粉而在快门叶片的重叠部分处形成狭缝 在快门叶片中并且沿着厚度方向被磁化，使得叶片通过磁力彼此吸引。
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公开(公告)号：US4394082A
公开(公告)日：1983-07-19
申请号：US225524
申请日：1981-01-16
申请人： Michio Senuma , Kunio Watanabe
发明人： Michio Senuma , Kunio Watanabe
摘要： The shutter blades of a camera are made lighter in weight in order to reduce the driving power needed to obtain a desired running speed by forming the shutter blades of a metal coated plastic sheet member which may be painted black in order to prevent light reflection, with the thickness of the metal coating being between 0.001 to 0.005 mm.
摘要翻译： 相机的快门叶片重量更轻，以便通过形成金属涂覆的塑料片部件的快门叶片来减少所需的驱动力，以获得所需的行进速度，其可以被涂黑以防止光反射， 金属涂层的厚度在0.001至0.005mm之间。
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