Abstract: A writing instrument has an elongate body equipped with a pocket connector. The connector includes a leg secured to the body and a relatively ridged, elongate stem extending from the leg in generally parallel relationship with a face surface of the body to define a pocket receiving space therebetween. The stem has a remote spring engaging surface near an end of the stem remote from the leg. A pocket engaging leaf spring is disposed in the space and has ends in biased engagement with the remote spring surface and another spring surface near the leg. The spring is bowed such that a central portion of the spring is closer to the body face than the spring ends. The disclosed body is a scabbard which remains in a user's pocket when the writing implement is in use.

Abstract: An improved iontophoresis device for topical administration of ionic drugs or chemicals through epidermal tissue for anesthetizing or sterilizing local tissue or for applying various medicaments without mechanical penetration. An ionic form of drug is conducted through the epidermal tissue by means of direct current generated from a battery powered current source. Pulse-width modulated DC current is regulated by feedback circuitry which varies the pulse duration and adjusts and stabilizes the average current at a desired level. A high voltage capability together with feedback control enables maintenance of a constant current through the highly resistive epidermal tissue. To prevent excessive voltage buildup and the accompanying dangers of shock and burns, a comparator circuit monitors current flow and voltage across the electrodes and automatically triggers an SCR shutdown circuit when impedance readings are outside predetermined limits.