A coupling assembly having abutting surfaces held together in sealed relationship by cooperable male and female nuts includes a gland member having one of the abutting surfaces thereon and being receivable in the male nut. At least one inwardly extending projection on the male nut is receivable in an external longitudinal groove in that portion of the gland member which is receivable in the male nut. Couplings for different fluids have different projection and groove arrangements such that a mal...

There is provided a toothbrush where the dose of dentifrice used is controlled by the use of bristles of at least two different colors. When the bristles of one color are covered with a dentifrice the dose will be within guidelines. In addition, the dentifrice and bristles of one of the colors can be the same to aid in controlling the dose of dentifrice. This will in turn limit the dose of fluoride and other components of a dentifrice.

An electromechanical coded actuator, upon receipt of the proper combination f electrical pulses, will unlock and cause angular displacement of an output shaft. The device comprises a rotatable notched flange integral with the output shaft, the former being keyed to the housing by a series of flat blades axially movable against a bias. A first solenoid sequentially positions a rotatable index arm over each blade, whereupon a second solenoid actuates the index arm to displace and lock selected bla...

The specification describes a label used for the codification of various articles such as files, tapes, cassettes, and the like. The labels are color-coded and each label bears to one side of its colored field a machine readable marking with a pair of visual readable indicium in the colored field. Each label is identifiable by color, by its machine readable marking, and by its visual indicium. When working with labels as described above, there is no need to provide additional labels to complete ...

The present invention is directed to a coded seal which allows a device to determine whether unauthorized access to a terminal or other electronic or security device has been made. The code includes a series of continuous and discontinuous members which are used to form a code. Breaking of the seal causes the members to be discontinuous and makes it difficult to determine what the code was. In this way, it is difficult to replace the seal, as this would only be successful if the replacement seal...

A free standing antenna extending longitudinally to present a base and a free end, comprising a helical conductor disposed over an insulated metallic tube.

A coded switch unit is provided with code setting means adjustable between two positions and a plurality of pushbutton actuated operating means also adjustable between two positions and cooperating with contact means in such a manner that depending upon the adjusted position of the code setting means and the operating means, closing of a circuit connected to the switch will require actuation of operating means set in one position, whereas actuation of any operating means set in the other positio...

A Touch-tone coded credit card employing first and second code groups, the first group having four bit positions and the second group three bit positions, one of which is utilized in each group to identify a decimal digit. The card is provided with a non-coded area (used for a magnetic or signature stripe) which is positioned opposite the first code group, and is at least as wide. If the card is reversed side-to-side when positioned in a code reader, no output is derived from the first code grou...

A digital information receiver having a tapped delay line equalizer for reducing intersymbol interference caused by a linear time dispersive transmission channel. The tapped delay line equalizer includes a plurality of amplifiers the gains of which are adjusted such that the combined response of the equalizer and channel approximates a multi-element coded digital signal which has the same number of levels as the signals to be transmitted, has the same number of elements as the channel response s...

A merchandising coupon having a coded information track comprising a pair of substantially parallel rows of adjacent portions of contrasting character (for example, black and white), the portions of the first of said rows serving as a timer track, and the portions of the second of said rows serving as an information track; the contrasting portions of the first row being symmetrically and uniformly spaced to serve as a timing or clocking track, and the contrasting portions of the second row being...