Plasma Enhanced Chemical Vapor Deposition (PECVD) diminishes shifting and drifting in the Psibar® series 1200 pressure transducers. The sensor's thin film on stainless steel structure has a resistive strain gauge formed in a Wheatstone bridge pattern, atomically bonded to a polished stainless steel substrate.
Because the entire transducer is constructed from stainless steel, parts are welded together, eliminating the need for glues, mallory bonding, or floppy diaphragms. The result is that the thin film follows the shape of the stainless steel very closely, providing constant repeatability, and long-term stability.
The DuraTRUE™ 90 hollow-shaft, right-angle, planetary gearhead provides direct coupling to multiple drives. It also offers design flexibility, making it easier for engineers to couple a variety of different sized shafts, with 22-, 30-, and 38-mm bore sizes available.
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Hollow-shaft gearheads eliminate shaft couplings improving system reliability, and decreasing installed length.
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Offering a backlash of 8 arc min, the hollow-shaft gearhead has a peak torque rating of 7,450 in-lb and a peak radial load capacity of up to 1,798 lbs. It is available in 90 mm, 115 mm, and 142 mm sq. frame sizes, and ratios of 1:1 to 500:1.
As a replacement for spiral-bevel geared right-angle gearheads, the design reportedly delivers higher torque and longer life in a smaller, lower-inertia package. It's targeted at space constrained automation applications.
Anthony Trupiano, Thomson Micron, 50 Alexander Ct., Ronkonkoma, NY 11779; Tel:(516) 467-8000; Fax: (516) 467-9814; Email: trupiano@thomsonmail.com.
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binder
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Replacing the thin metal parts of standard binders with nylon allows molded-in notches that provide an inexpensive, quick-release, cinch-down mechanism.
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ACCO-type paper binders use a horizontal base, a pair of thin metal prongs oriented vertically through a paper stack, and a top cross member that has free-sliding lock tangs to hold each bent-over prong in position. Such binders frequently loosen when handled roughly, because the locking tangs can slide off of the prongs.
The stacked paper fastener (patent 5,988,925) uses molded nylon instead of metal to improve the design. Molded nylon has no sharp edges to cut the user for improved safety; won't rust or leave rust marks on archive records; and allows notches to be molded into the outer surface of each prong.
When passed through ratchet members, the notched-prong design allows the fastener to be pulled tight and locked around the stack of papers. The cinch-tight mechanism remains tightly bound, no matter how much the stack is thrown around. Quick release thumb tabs, similar to a releasable cable tie, allows the top piece to be easily removed to add more papers or to disassemble the stack of papers.
Sherman Bagget, M/S Productions, 3517 Coolheights Dr., Rancho Palos Verdes, CA 90275; Tel: (310)
541-0213.
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