Abstract: A material for enhancing the conductivity and protecting electrical contacts, the material having two basic components. The first basic component normally serves to limit corrosion between the contacts and to suspend and suitably distribute the second, or conductive component. This first component, or carrier medium, may be one or more of the following: rosin-derived hard resin, petroleum jelly, petroleum wax and a benzyl phthalate plasticizer for limiting corrosion, effecting adhesion of the material to electrical contacts, and providing body to the material for distributing the conductive component. The second component is an electrically conductive, particulate component such as, for example, metallic silver which enhances the conductivity and actively reduces the resistance by supplying multiple, parallel conductive paths for electrical current flow, filling in surface irregularities in the contacts, and penetrating surface films. The conductive component may be in powder, coarse pigment, or flake form.

Abstract: A heart monitor and defibrillator device, which can be worn by high risk patients with only minimal interference with normal daily activities, in which one pocket-size unit contains a heart monitor and microprocessor and a second pocket-size unit contains defibrillation circuitry. ECG electrodes are attached to the patient to sense heart impulses and transmit the impulses to the first unit, which analyzes the heart beat and determines if defibrillation is required. The second unit administers the defibrillating shock when required and has a built-in delay so that the wearer is warned to prepare for defibrillation. Several defibrillation shocks may be administered at spaced intervals. The defibrillation electrodes include layers of electrically conductive, skin adhering paint having low contact resistance, and the electrodes may be moved by the patient to prevent skin irritation in the electrode site.

Abstract: A time-lapse indicator in which a receptacle contains a fluid material having numerous discrete particles dispersed in a liquid carrier, and a layer of absorbent material in close proximity to the receptacle, the receptacle and absorbent material being separated from one another by a wall which is broken when the time period is to be determined by the indicator. The indicator normally has a pair of electrodes for measuring the resistance of the fluid material after a portion of the liquid carrier has been absorbed therefrom in the absorbent material. Mechanisms for both activating and reading the indicator may be used.

Abstract: A time-lapse indicator in which an electrically conducting, fluid-absorbent layer is initially separated from an activating fluid. When the indicator is activated the fluid flows into the absorbent layer, thereby changing the electrical conductivity of the absorbent layer. The fluid may be retained by a receptacle having a rupturable wall portion in a layer paralleling said absorbent layer and the rupturable wall portion may be a frangible layer between the liquid and the absorbent layer, which is broken when the indicator is activated. A time delay layer may also be included between the frangible layer and the absorbent layer to control the rate of flow of the liquid into the absorbent layer and thereby prolong the effective operation of the indicator following activation thereof.

Abstract: A disposable timer and product storage condition indicator in which components of a carrier mixture react physically and/or chemically with one or more receptive layers. The carrier mixture and receptive layers are so comprised as to react during a given time interval, the interval being dependent upon and constantly modified by such external physical conditions as temperature, moisture, light, radiation, or pressure. During the timing period the device can either give a changing color display which is matched in rate to the declining freshness of a food or medicine in a container to which the device is attached or can cause the appearance or disappearance of words or symbols or sticky areas or odors. A variety of means for activating the timer are possible.

Abstract: A time-lapse indicator in which a receptacle contains a fluid material having numerous discrete particles dispersed in a liquid carrier, and a layer of absorbent material in close proximity to the receptacle, the receptacle and absorbent material being separated from one another by a wall which is broken when the time period is to be determined by the indicator. The indicator normally has a pair of electrodes for measuring the resistance of the fluid material after a portion of the liquid carrier has been absorbed therefrom in the absorbent material. Mechanisms for both activating and reading the indicator may be used.

Abstract: A weight training apparatus, which normally includes a pair of cables and a bar interconnecting the cables. The cables are wound preferably on a reel, and a brake device controls the reel to regulate the force required to unwind the cables from the reel. A mechanism responsive to the initial pull on one of the cables sets the brake mechanism for the force desired. This force can be easily changed at any point in the training exercise by merely momentarily releasing the pull on the control cable so that the brake device will be reset at another selected force requirement for unwinding the reel. The control mechanism responsive to the initial pull of the cable may be either of a mechanical or electrical type.

Abstract: A silk screen printing process and apparatus in which a silk screen having a porous figure printing area may be divided by partitions into compartments for different types or colors of ink. The printing operation is performed by a rapid upward acceleration of the silk screen and sheet on which the printing is to be performed, thereby causing the ink to flow through the porous printing area of the screen as a result of inertia. Various types of apparatus may be used to perform the process, one consisting of a platen on which the sheet and silk screen are placed, and a hammer type element which strikes the underside of the platen to produce the upward acceleration.