A front opening household dishwasher has an upper rack having wheels that roll inside a C-shaped support channel, which in turn is mounted on support rollers attached to the inside of the tub. Each end of the channel is closed off by end caps to prevent the rack wheels from escaping from the channel, and to limit sliding movement of the channel with respect to the support rollers. Each end cap is a unitary structure having a body portion abutting the end of the channel and extending above and below the upper and lower edges of the channel. An arm portion is integral with the body portion and is connected thereto by a hinge portion at one side, and the arm extends through a pair of aligned openings at the upper and lower walls of the channel to engage a flexible detent hook on the other side of the channel to allow the end cap to be easily assembled and disassembled from the channel.
A channel-stop assembly includes an elongated C-shaped channel 26 having an aperture 76 adjacent one end thereof. Inserted in the channel is a channel-stop 40 having first and second body members 42, 44 which are hinged together. One of the body members is slidably fitted into the end of the channel, and the other body member is pivotal to a coupled position wherein a tab 72 on the second body member 44 protrudes within the aperture in the channel to prevent removal of the channel-stop from the end of the channel. The two body members can be uncoupled for removal of the tab from the channel aperture so that the channel-stop can be removed from the channel.
HDI fabrication techniques are employed to form a variety of optical waveguide structures in polymer materials. Adaptive optical connections are formed, taking into account the actual position and orientation of devices which may deviate from the ideal. Structures include solid light-conducting structures, hollow light-conducting structures which are also suitable for conducting cooling fluid, and optical switching devices employing liquid crystal material. A "shrink back" method may be used to form a tunnel in polymer material which is then filled with an uncured polymer material that shrinks upon curing.
A removable track stop for a dishwasher track movably carrying a dishrack. The track stop has a hollow sleeve that fits into the end of a generally C-shaped track and has a grip that extends from the sleeve and the end of the track. A movable lock member in the sleeve and grip has a lock button extending beyond the grip for actuation by a user at one end. The lock member has locking arms extending from the other end of the lock member inside the sleeve. The locking arms include locking prongs that project through openings in the hollow sleeve and engage locking slots in the upper and lower legs of the C-shaped track to lock the track stop to the track. Pressing on the lock button causes the locking prongs to be withdrawn from the locking slots in the track allowing the track stop to be removed.
