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A pet fence or radio fence, is an electronic system designed to keep a pet or other domestic animal within a set of predefined boundaries without the use of a physical barrier. A mild electric shock is delivered by an electronic collar if its warning sound is ignored. The system was first invented and patented by Richard Peck in 1973. [1]
In 1969 Robert B. Cox, a farmer in Adams County, Iowa, invented an improved electric fence bracket and was issued United States Patent No. 3,516,643 on 23 June 1970. This bracket improved electric fences by keeping the wire high enough above the ground and far enough away from the fence to permit grass and weeds growing beneath the wire to be ...
A typical shock collar. Shock collar used on a riot police dog in 2004 in Würzburg.Two years later, [1] Germany banned the use of shock collars, even by police. [2]A shock collar or remote training collar, also known as an e-collar, Ecollar, or electronic collar, is a type of training collar that delivers shocks to the neck of a dog [3] to change behavior.
Electric fence is a barrier that uses electric shocks to deter animals from crossing a boundary. Electric Fence may also refer to: Electric Fence , a memory debugger
By far the most time-consuming part of installing a picket fence is setting the posts. Painting with a picket fence. There are some vinyl picket fence systems on the market that are installed without digging holes or pouring concrete. These are installed by driving pipe deep into the ground, which is how chain link fence has been installed for ...
Log fences or split-rail fences were simple fences constructed in newly cleared areas by stacking log rails. Earth could also be used as a fence; an example was what is now called the sunken fence, or "ha-ha," a type of wall built by digging a ditch with one steep side (which animals cannot scale) and one sloped side (where the animals roam).
This slide fence consists of a series of fence sections, typically as shown in the SLIDE FENCE DETAIL drawing (pictured right). Each fence section is held in place by strong springs. At each end are electro-mechanical plugs, which maintain a continuous electrical circuit that is monitored by signaling equipment. In normal operation, the current ...
Mostly it is made of 180-centimetre (6 ft) high wire mesh, but some sections in South Australia comprise multi-strand electric fence. The fence line on both sides is cleared to a 5 m (5.5 yd; 16 ft) width. [11] Parts of the Dingo Fence are lit at night by 86 mm (3.4 in) cold cathode fluorescent lamps which are