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The first handcuff cover was invented by J. D. Cullip and K. E. Stefansen [2] and patented in 1973. [3] It is made from high-strength, high-impact ABS plastic [4] and is still distributed by C & S Security Inc. as "Black Box" handcuff cover. [5] Other companies sell similar devices, e.g. CTS Thompson ("Blue Box" handcuff cover) or Sisco restraints.
A wrist brace is a supportive garment worn around the wrist to reinforce and protect it against strains and sprains during strong use, or as a splint to help healing. [1] Wrist braces are common accessories in injury rehabilitation processes involving the wrist. [2] They immobilize the joint and provide heat and compression to the wrist bones ...
The purpose of a bubble canopy is to give a pilot a much wider field-of-view than flush, framed "greenhouse" canopies used on early World War II aircraft, such as those seen on early models of the F4U, P-51, the Soviet Yak-1 and earlier, "razorback" P-47 fighters, all with dorsal "turtledecks" integral to their fuselage lines, which left a blind spot behind the pilot that enemy pilots could ...
A bracer (or arm-guard) is a strap or sheath, commonly made of leather, stone or plastic, that covers the ventral (inside) surface of an archer's bow-holding arm. It protects the archer's forearm against injury by accidental whipping from the bowstring or the fletching of the arrow while shooting , and also prevents the loose sleeve from ...
A demi-gaunt is a type of plate armour gauntlet that only protects the back of the hand and the wrist: demi-gaunts are worn with gloves made from chain mail or padded leather. The advantages of the demi-gaunt are that it allows better dexterity and is lighter than a full gauntlet, but the disadvantage is that the fingers are not as well protected.
The vertical stabilizer is the fixed vertical surface of the empennage. A vertical stabilizer or tail fin [1] [2] is the static part of the vertical tail of an aircraft. [1] The term is commonly applied to the assembly of both this fixed surface and one or more movable rudders hinged to it. Their role is to provide control, stability and trim ...
SK-105 Kürassier, showing the low height of the turret above the gun barrel. The turret consists of upper and lower parts, joined by a trunnion.The gap between these two parts is often covered by a visible rubber or canvas bellows.
A Boeing 737 uses an adjustable stabilizer, moved by a jackscrew, to provide the required pitch trim forces. Generic stabilizer illustrated. A horizontal stabilizer is used to maintain the aircraft in longitudinal balance, or trim: [3] it exerts a vertical force at a distance so the summation of pitch moments about the center of gravity is zero. [4]