Cast in many industrial products have long been used mortgages (anchor) bolts with special heads, such that not only pull, but rotate can’t.
With the advent of high strength composite self-hardening compositions that bolt you can “lay” in the body of the finished product (plastic or metal) and making it pre-nest, and then simonaityte.
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Multi-purpose two-stroke
The journal has already reported on the advantages of rotary valve gas distribution in two-stroke internal combustion engines («M-K» No. 11 for 1974 and No. 10 for 1977). Here are their...
AMENDMENT — MILLIMETERS
In a number of traditional home devices such as a receiver and a photo or a movie camera, TV, VCR — all the more familiar and even normal becomes a typewriter. And with all the variety...
