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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 172/12 - Overload lift type


Subclass of Class 172 - Earth working
Definition: Apparatus in which the condition sensed is an abnormal increase
No. of patents: 20
Last issue date: 08/02/2005


NumberTitleIssue Date
6923285Attachment control device
The present invention provides an attachment for use with a power machine. An attachment control device includes a controller, such as a microprocessor, a microcontroller or other digital computer which senses the type of attachment and controls power to the attachm...
08/02/2005
6618659Boom/bucket hydraulic fluid sharing method
Method of sharing hydraulic fluid, includes: inputting first signal from a first manual control and second signal from a second manual control; sending a first control signal controlling a first valve in response to first signal; sending a second control ...
09/09/2003
6202014Features of main control computer for a power machine
The present invention is directed to a computer based control system for controlling hydraulic and electromechanical actuators on a power machine, such as a skid steer loader. The computer based control system is configured to implement a number of featur...
03/13/2001
6064933Automatic bucket loading using teaching and playback modes triggered by pile contact
An electrohydraulic control system for loading a bucket of an earthmoving machine includes sensors for sensing when the machine is crowding a pile of material to be loaded. A command signal generator monitors the sensed "crowd" parameters to trigger one o...
05/16/2000
5819190Ground leveling control system for a bulldozer
A ground leveling control system for a bulldozer, comprising: (a) a cutting edge position detector for detecting a position of a cutting edge of a blade with respect to the ground; and (b) a blade controller for controlling the blade to be lifted or lower...
10/06/1998
5622226Method for controlling bounce of a work implement
A method is provided for controlling the bounce of a work implement attached to a machine having an electro-hydraulic system. The method comprises the steps of sensing the operating pressure in an actuator arrangement connected between the frame of the ma...
04/22/1997
5178220Device for controlling the attitude of an implement drawn by an agricultural machine
The device is mounted in an agricultural machine comprising two links for drawing an implement, a lifter member and a central control unit for controlling the member. The device comprises: two horizontal bars carried in the form of brackets from the chass...
01/12/1993
4834461Control system for a multiple shank impact ripper
Impact rippers are useful for ripping solid rock. The service life of the impactor can be extended if the impactor is operated only when the ripper shank is loaded sufficient to transmit the impact energy into the material being ripped. The subject contro...
05/30/1989
4802787Electrical control system
A control apparatus for a pavement breaker which includes a carriage, a lifting means for raising and lowering an impact arm which impact arm includes a tool for impacting a surface, mounted on one end and an oscillating member mounted on the other end. T...
02/07/1989
4549610Vehicle with front and rear steerable wheels individually driven by hydraulic motors
An agricultural tractor having six wheels which are each hydraulically drivable by individual hydraulic motors through hydraulic fluid supplied by respective hydraulic pumps. With each pump driving only one wheel, skidding of a wheel does not affect drive...
10/29/1985
4413684Laser-controlled ground leveling device with overfill sensor and wheel rise limiting device
In combination with a conventional laser beam control system for controlling an earth scraping and storing apparatus, such as a box blade for example, for leveling terrain, an improvement detecting when the box blade is full and overflowing is imminent an...
11/08/1983
4328719Micromotion multiplier
Apparatus (19) for sensing forces (29) such as in a power transmission apparatus (10) and magnifying the sensed forces suitably to provide an output (28) such as for use in controlling associated equipment (12, 18) to limit the forces. The sensing apparat...
05/11/1982
4320589Snowplow apparatus
An improved snowplow apparatus provided with articulated quadrilateral means permitting vertical movement of a snow clearing blade which is kept in a lowered position by a compressed gas accumulator communicating with one or two hydraulic cylinders connec...
03/23/1982
4263973Laser beam level control with automatic override
A laser beam level control system for an earth-moving machine is provided with an automatic override function to temporarily block blade-down signals and raise the blade when lowering it or leaving it at its previous height would increase the force requir...
04/28/1981
4260025Device for automatically lifting and rapidly lowering tractor implements
A device for lifting an implement carried by an agricultural tractor three-point linkage has a flexible bar connected at its ends to the said lower linkage arms for rotation about a transverse axis, the reaction forces transmitted from the ground to the i...
04/07/1981
4260024Device for lifting implements carried on agricultural tractors
A tractor three-point linkage has a hydraulic single-acting actuator for raising lower linkage arms through a linkage including respective vertical tie rods. A flexible compensating bar is rotatably supported by two fixed brackets on the tractor, the cent...
04/07/1981
4173258Laser beam level control with automatic override
A laser beam level control system for an earth-moving machine is provided with an automatic override function to temporarily block blade-down signals and raise the blade when lowering it or leaving it at its previous height would increase the force requir...
11/06/1979
4157118Automatic control systems for the working tool of a civil machine
In a civil machine comprising a working tool provided on a vehicle with a travelling mechanism and a drive therefor, an automatic control system comprises a stroke detector for detecting the amount of stroke of a lifting cylinder operating to move the wor...
06/05/1979
4062539Automatic control systems for rippers for use in civil works
The control system is provided with a detector that detects whether the ripper is operated in a piercing operating mode or a digging operating mode. In the piercing operating mode the angle of the shank is adjusted to a preset piercing angle, while in the...
12/13/1977
4031964Automatic control system controlling a ripper used on a construction equipment
An automatic control system for a ripper used on a construction equipment in which a load detector is provided on the ripper for detecting load acting on the ripper shank and lift cylinders are actuated to automatically raise the shank when overload is ap...
06/28/1977
 
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