Abstract: A pillbox-type RF window having an input/output window in a microwave tube, the pillbox-type RF window includes a disc-shaped member having a metallization layer formed on an outer peripheral portion of a disc-shaped ceramic body; a pair of ring-shaped members constituted by metal bodies having substantially the same outer diameters as the disc-shaped member, arranged to sandwich the disc-shaped member from both sides, and integrated with the outer peripheral portion of the disc-shaped member; a tube-shaped member constituted by a metal body having an inner diameter substantially equal to the outer diameters of the pair of ring-shaped members and the disc-shaped member, for holding the pair of metal components and the disc-shaped member on an inside thereof; and a restriction member for suppressing rotation between the ring-shaped members and the tube-shaped member.

Abstract: An air blower device has a tubular body defining an air guide passage and a ring-shaped member supported by the tubular body. The ring-shaped member has an extended part extending from the ring-shaped member toward the opening portion at the back of the tubular body. The extended part has an edge facing the opening portion at the back end of the tubular body, and the edge is located between an edge belonging to the ring-shaped member to face the opening portion at the back end of the tubular body and the opening portion at the back end of the tubular body. The ring-shaped member is supported by the tubular body by a contact between a first protrusion formed on an inner periphery of the tubular body so as to protrude from the inner periphery into the air guide passage and a second protrusion formed on the extended part.

Abstract: A base structure of a retainer comprising a pair of wall members 2 formed of a columnar body, which is vertically long, has a groove 4 formed in its longitudinal direction and has locking sections 5 formed in plural portions for locking a sliding member 3 at plural portions in the groove, and the sliding member 3 which is slidable in the groove of the wall member 2 and removably fitted to the locking section 5 through movable locking pieces 7.

Abstract: A base structure of a retainer for a shelving comprising operation section supporters (2) which have plural locking sections (5) formed at prescribed intervals on flat surfaces of a flat and vertically long board-like material and a pair of shelf board supporting members (3) which are in engagement with the operation section supporters (2), slidable in the vertical direction and provided with movable locking pieces (11) removably engaged with the locking sections (5) of the operation section supporters (2), wherein the movable locking pieces 11 are automatically engaged with or removed from the locking sections (5).

Abstract: Catching grooves 2d, 2e are formed in a turning space 2f of a catching protrusion bar 2b, engagement projections 3c, 3d are formed on a standing part 3b of a catching member 3a, and the standing part 3b is inserted into the turning space 2f, so that the engagement projections 3c, 3d are respectively engaged with the catching grooves 2d, 2e by the own weight of the catching member 3a.

Abstract: A base structure of a retainer comprising operation section supporters 2 which have plural locking sections 5 formed at prescribed intervals on flat surfaces of a flat and vertically long board-like material and a pair of shelf board supporting members 3 which are in engagement with the operation section supporters 2, slidable in the vertical direction and provided with movable locking pieces 11 removably engaged with the locking sections 5 of the operation section supporters 2, wherein the movable locking pieces 11 are automatically engaged with or removed from the locking sections 5.

Abstract: A base structure of a retainer comprising a pair of wall members 2 formed of a columnar body, which is vertically long, has a groove 4 formed in its longitudinal direction and has locking sections 5 formed in plural portions for locking a sliding member 3 at plural portions in the groove, and the sliding member 3 which is slidable in the groove of the wall member 2 and removably fitted to the locking section 5 through movable locking pieces 7.

Abstract: Catching grooves 2d, 2e are formed in a turning space 2f of a catching protrusion bar 2b, engagement projections 3c, 3d are formed on a standing part 3b of a catching member 3a, and the standing part 3b is inserted into the turning space 2f, so that the engagement projections 3c, 3d are respectively engaged with the catching grooves 2d, 2e by the own weight of the catching member 3a.

Abstract: To reduce the number of parts, assembly work time and cost of a cable closure including a two-splittable cylindrical sleeve for covering the cable junction point, and a pair of two-dividable annular end plates fitted to both inner ends of the sleeve to close spaces between the cables and the sleeve, the end plates are formed by a rigid plastic material and gaps between the cable and the end plates are sealed by rubber airtight tape wound around the cable by adjusting the number of turns according to cable diameter. Further, two cable gripping means are fixed to the end plates, respectively to protect the junction point from external force applied between the two cables by the strength of the sleeve coupled to the end plates.