摘要:
The invention refers to an improvement in and relating to an air supply valve (1), comprising a shutter housing (2) with an adjustable shutter blade (3) fitted inside which from a first completely closed position is turnable through a predetermined angle to an open position. The shutter blade (3) is on one hand manually turnable from the said open position further through another predetermined angle to a second completely closed position and is on the other automatically adjustable according to the outdoor temperature during turning of the shutter blade (3) from the first closed position to said open position, using a thermostat unit (4) that is fitted to the shutter blade (3).
摘要:
A device for pushing or pulling elongate wire- or rod-shaped elements through conduits comprises a conduit draw wire (100) defined by a plurality of separated groups of beads (101) slipped on a wire (11) alternately with helical springs (12). With the aid of a coupling device (13, 14') several such lengths may be coupled together or complementary components (15') may be attached. An apparatus (200) may be provided which comprises a runner (23) which via an engagement hook (24) transports the wire during a feeding stroke, alternately with a return stroke of no engagement between the draw wire and runner.
摘要:
A fan for steady mounting on a wall or the like is divided in two independent constructional units (10, 20) which by means of a quick coupling of the bayonettype (21a', 21 b', 31a, 31b) and a couple of electrical terminal means (14, 24) may be readily assembled and disassembled, whereby dismounting for repair or exchange purposes is facilitated.
摘要:
A device for pushing or pulling elongate wire- or rod-shaped elements through conduits comprises a conduit draw wire (100) defined by a plurality of separated groups of beads (101) slipped on a wire (11) alternately with helical springs (12). With the aid of a coupling device (13, 14') several such lengths may be coupled together or complementary components (15') may be attached. An apparatus (200) may be provided which comprises a runner (23) which via an engagement hook (24) transports the wire during a feeding stroke, alternately with a return stroke of no engagement between the draw wire and runner.