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Patent No. 5823572

Self Defense Weapon With Memo

A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.

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Class 336/149 - Contactor slidable on coil winding


Subclass of Class 336 - Inductor devices
Definition: Subject matter comprising a coil and a contactor which travels
No. of patents: 16
Last issue date: 01/01/2008


NumberTitleIssue Date
7315231Electrical reactor assembly having center taps
An electrical reactor assembly and method of assembly is disclosed. The reactor is formed from a combination of a magnetic T-core and a pair of magnetic L-cores. A plurality of comb-like separators is placed over a vertical portion of the T-core. A wire, with a rect...
01/01/2008
6909218End cap and brush box assembly
A end cap and brush box assembly for a mechanically commutated electric motor including an end cap constructed from high temperature material which also has resilient mechanical properties. The end cap and brush box assembly includes a two piece brush box having a f...
06/21/2005
6281935System and method for controlling a transmitter frequency
A system and method for controlling the frequency of a signal being transmitted wherein the frequency of the signal received at the transmitter site is error corrected before being broadcast. The error in the frequency may be developed and applied to the ...
08/28/2001
5283728Variable transformer with slidable contactor
A voltage control system has a pair of clockwise and counterclockwise interleaved coils on a portion of a transformer core, the coils having multiple spaced turns providing sets of co-planar alternate electrical contact pairs extending linearly to form a ...
02/01/1994
4794359Variable transformer
A variable transformer comprising an annular core with a winding which at the end surface of the core is provided with a circular contact path to be connected with a current brush mounted on a rotor (7). The current brush consists of a contact roller jour...
12/27/1988
4656443Variable distributed constant delay line having movable slider contact
This variable delay line makes use of a transmission line as a delay line element and is suitable for switching over the delay time of a high speed signal having for instance a rise time of one nanosecond or less. And this variable delay line includes a t...
04/07/1987
4620164Variable delay line having linking electrode with depressions therein for snug engagement of moveable contact
A variable delay line using a lumped constant type electromagnetic delay line and enjoying a superhigh-speed rising characteristic is disclosed, which comprises an inductance element formed by winding a conductor and possessed of a plurality of taps, a pl...
10/28/1986
4577146Variable autotransformer having an indexed stepping brush
An adjustable voltage transformer having a commutating surface formed of segments of electrical conductors upon which a contact brush is movable while in electrical engagement therewith. Means are provided to "step" the brush between segments, so that whe...
03/18/1986
4560970Variable transformer with multi-layer coil
A coil for a variable transformer is provided having multiple layers of wire. Winding of such a coil is facilitated by providing an end form having a series of raised fins, or partitions, between which stacked layers of wire are held. The construction pro...
12/24/1985
4540934Device for the fine adjustment of the output voltage of multi-phase regulating transformers
A multi-phase regulating transformer is disclosed having a plurality of windings cooperating with stepping trolleys which are driven by a common driving member. To obtain fine adjustment of the output voltage, the trolleys are coupled to the driving membe...
09/10/1985
4496923Electrical device with improved heat dissipation
An improved electrical device of the type having a coil and a base and having a thermally conductive electrical insulating material placed between the coil and the base so as to facilitate the flow of heat from the coil to the base, and further having a b...
01/29/1985
4441092Variable inductance with variable pickoff and variable flux medium permeability
A variable inductor includes a coil, a moveable contactor, and moveable magnetic material caused to move proximate the coil and simultaneously with the contactor. The contactor establishes first and second portions of the coil and, relative to the conditi...
04/03/1984
4415873Variable inductor having reduced arcing tendency
A variable inductance includes a coil and a moveable contactor which maintains continuous contact with the coil. An electrical connection, which is moveable along with the moveable contactor and away from a first end of the coil, connects the moveable con...
11/15/1983
4412200Variable inductor with carriage for multiple trolley wheels
As part of a moveable carriage assembly, a plurality of trolley wheels are capable of being driven, in worm-gear fashion, along a coil which is rotatable about its axis. One end of the coil is conductive and the other end of the coil is preferably non-con...
10/25/1983
4408177Variable inductor having extended useable frequency range
A plurality of moveable contactors may travel along a rotating coil, one end of which is conductive and the other end of which is non-conductive. Two or more electrically interconnected moveable contactors effect a shorting across unused electrical turns ...
10/04/1983
4189672Variable transformer method and apparatus for preventing short-circuit current flow
In a variable transformer, two high-conductivity brushes are mounted in a carriage and adapted for longitudinally traversing the transformer winding to contact exposed segments of the winding. By relatively elevating and exposing the odd and even turns al...
02/19/1980
 
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