Hardy hidden
hinge
Concealed hinges provide a cleaner appearance than externally mounted hinges, but they have a reputation for not being as strong. However, a new concealed hinge provides high strength, vibration resistance, and allows fast door removal and replacement.
|
Tough enough: Concealed hinge provides vibration resistance and allows fast door removal and installation.
|
Consisting of a door leaf and a frame leaf, the one-piece pin/handle design locks in both open and closed positions. By removing the pin handle out of its engaged detent, retracting the hinge pin from the frame leaf, and locking the handle in the disengage detent, a single user can easily remove the door from the frame. To replace the door the user positions it on the frame, slides the hinge pin into the frame leaf, and engages the pin in the detent.
Tension springs resist vibration, maintaining handle position. Gusset reinforcements increase axial and radial load capacity, and a stainless steel option provides corrosion resistance for use in harsh environments.
Targeting modular production applications where doors and frames are fabricated in different locations, the hinge components are installed separately using rivets, studs, standard machine screws, or by welding.
Mike Fahy, Southco, 210 N. Brinton Lake Rd., Concordville, PA 19331-0116; Tel: (610) 361-7185; E-mail: mfahy@southco.com
Directional switch
Magnet, substrate, spacer, and metal armature—
four simple components form the basis of the MagnaMouse™multi-directional switch. The electrically conductive armature, including inner and outer contact pads, is stamped as a single-piece part. The magnet, separated from the substrate by a spacer, holds the armature in its reset position.
|
Simple and durable, MagnaMouse replaces more costly switches in computer cursor controls, game controls, or automotive mirror and seat operations.
|
During actuation, center and outer armature pads contact the substrate. The substrate's electrode array varies according to mouse function—from discrete contact pads to a continuous analog variable resistor. Individual electrodes define cursor direction directly; with the analog resistor, direction is determined by a comparative circuit and an A/D converter in the microprocessor.
In addition, the center contact pad can be designed as a pressure-sensitive resistor. A resistance-sensitive accelerator function, added to the microprocessor, allows variable cursor speeds, depending on operator pressure.
Erin Boyd, Duraswitch Industries Inc.; Tel:+1 480 586 3358; erin@duraswitch.com.
Tweet This
19 
