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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 4166452 | Apparatus for testing human responses to stimuli The system of the invention includes provisions for administering a plurality of tests sequentially to a subject, with each test including a plurality of programmable visual, auditory and/or tactile stimuli and programmed desired responses. The system inc... | 09/04/1979 |
| 4166453 | Body electrodes An electrode suitable for use in conducting electrical signals from the skin of a living animal, the electrode having a conducting member constituted by an electrically conducting plastics material and an electrically conducting chloride gel carried by a ... | 09/04/1979 |
| 4166454 | Cardiac monitor A cardiac monitor generates infrared light which is directed at the skin of an individual to be monitored. The light reflected from the skin is detected and automatically controlled. The pulsatile flow of blood in the underlying vascular network modulates... | 09/04/1979 |
| 4166455 | Apparatus and method for non-invasive detection of strictures in conductive fluid conduits A method and apparatus are disclosed for non-invasively detecting the location of a constriction in a vessel through which a conductive fluid is flowing by externally measuring the streaming potentials generated by the flowing fluid. In an exemplary embod... | 09/04/1979 |
| 4166456 | Carrier release sheet An improved carrier release sheet is described for use with biopotential skin electrodes of the type including a stud, a pad preloaded with an electrically conductive material and in electrical contact with the stud, a base sheet having an aperture and se... | 09/04/1979 |
| 4166457 | Fluid self-sealing bioelectrode A dry-state bioelectrode having a self-sealing receptacle for receiving electrolyte and/or medicament fluid contents. The receptacle is attached at its opening to a sheet-like flexible base member having an opening in common with the receptacle opening, t... | 09/04/1979 |
| 4166458 | External cardiac resuscitation aid Portable apparatus is provided for use by a rescuer in administering cardiopulmonary resuscitation to a patient or for use as a training aid in the application of cardiopulmonary resuscitation. A light weight, inflatable, fluid-filled, foam or other resil... | 09/04/1979 |
| 4166459 | Cervical traction unit A cervical traction unit which fits over and is retained on one end of a mattress or similar support. The unit has a platform which rests on the mattress and carries a sliding carriage with a raised neck supporting yoke to receive the neck of a patient ly... | 09/04/1979 |
| 4166460 | Ankle protector An ankle protector for inhibiting lateral ankle bending motion assoicated with strains including an elastic stocking dimensioned and configured to snugly embrace the instep, heel, and ankle of the wearer; a semi-rigid heel cup positioned within the stocki... | 09/04/1979 |
| 4166461 | Surgical drape A surgical head drape of a single sheet of flexible material which is a barrier to bacterial migration provided with a pair of opposed and spaced apart side slits extending oppositely inwardly of both side edges to define a connecting tab portion integral... | 09/04/1979 |
| 4166462 | Self-propelled shark-proof cage The invention relates to a self-propelled shark-proof cage which is provided with at least one access opening and a propeller mounting frame having pivot means coupling it to the cage so that the propeller mounting frame is pivotal about two axes at right... | 09/04/1979 |
| 4166463 | Zippered elastic support for body extremities A zippered elastic tubular support for body extremities such as an ankle or leg support useful in treating various body disorders and more particularly, useful for the treatment of venous diseases of the leg. In the preferred embodiment, there is disclose... | 09/04/1979 |
| 4166464 | Absorbent dressing A highly conformable laminated absorbent dressing which comprises an absorbent pad or layer and an elastic backing film which is both elastic and easily deformable and which preferably is highly thermoplastic and easily heat-sealable. The backing film pos... | 09/04/1979 |
| 4166465 | Electrosurgical dispersive electrode A dispersive electrode has been devised for electromedical equipment consisting of a thin sheet or layer of electrically conductive material covered on one or both sides by a flexible laminate. To facilitate attachment to the skin of a patient during elec... | 09/04/1979 |
| 4166466 | Repeating hemostatic clip applying instruments and multi-clip cartridges therefor The instrument is generally shaped and operated in the manner of prior clip applying instruments. Shaped like a pair of dog-nosed pliers, the outer ends of the jaws are adapted to hold a clip which may be applied to a blood vessel with the instrument. The... | 09/04/1979 |
| 4166467 | Bite block for endotracheal tube An endotracheal tube assembly which includes a curved section of flexible tubing suitable for insertion into the trachea and having a junction fitting at its outer end extending outside of the mouth of the patient, the junction fitting providing a male co... | 09/04/1979 |
| 4166468 | Apparatus for endotracheal and esophageal intubation Apparatus for endotracheal and esophageal intubation embodying an elongated tubular member having a first portion with an open outer end and a second portion with an open inner end and a lumen extending therebetween. A first inflatable member is carried a... | 09/04/1979 |
| 4166469 | Apparatus and method for inserting an electrode An apparatus and method are disclosed for implanting a pacemaker within a patient with a minimal amount of incision. The pacemaker comprises an encapsulated pulse generator having a receptacle and an electrode having an electrode tip and an electrode conn... | 09/04/1979 |
| 4166470 | Externally controlled and powered cardiac stimulating apparatus Cardiac stimulating apparatus comprising a first external unit for transmitting electromagnetic energy within the patient's body to be received by a second, surgically implanted unit within the patient's body and adapted to be solely powered by the transm... | 09/04/1979 |
| 4166471 | Prosthesis pad retainer means for a brassiere or other breast garment A brassiere or other garment for a female's breast area, which is provided with a retaining means primarily for a prosthesis pad following a breast mastectomy; it provides a sureness and positiveness of retention without any irregular bulk or other unattr... | 09/04/1979 |
| 4166472 | Hair curler and stand An improved hair curler and stand wherein the hair curler consists of a handle and a rotatable hair curling device removably mounted on the handle, the handle containing a motor and batteries for rotating the curling device and the stand having means for ... | 09/04/1979 |
| 4166473 | Method and apparatus for setting hair Method and apparatus for setting hair by successively passing steam and cooling air through said hair while wound on rollers.... | 09/04/1979 |
| 4166474 | Cosmetic container construction A propel-repel swivel cosmetic container features basic lead-screw and nut parts, each of which is a single injection-molded piece of plastic material with certain further integral formations such that a variety of aesthetically satisfying overall appeara... | 09/04/1979 |
| 4166475 | Safety coupling A safety coupling for a conduit such as an underwater pipeline which is disconnectable when said pipeline is subjected to a predetermined longitudinal force to prevent damage to the pipeline and which includes valve means operable as disconnection of the ... | 09/04/1979 |
| 4166476 | Vacuum cut-off valve A vacuum cut-off valve for cutting off vacuum communication between an inlet port and an outlet port when the inlet vacuum increases above a predetermined vacuum level so that the outlet vacuum is maintained at a constant predetermined vacuum level. When ... | 09/04/1979 |
| 4166477 | Discharge conduits of steam generators and the like The invention provides, at the end of a pipe which extends a valve being part of an exhausting device for pressure-relieving a pressurized fluid, a nozzle which is exactly at the input of a hood, the convergent portion of said nozzle reducing its exit sec... | 09/04/1979 |
| 4166478 | Accumulator having a bladder to be filled with liquid The hydropneumatic accumulator disclosed herein comprises a rigid upright vessel, the mouth of which is at the bottom, containing an inverted bag-like bladder. The mouths of the vessel and of the bladder are sealed to one another. The bladder extends upwa... | 09/04/1979 |
| 4166479 | Blind liner for service pipes An insertable plastic pipe liner and a blind locking service head including a means for installing the same in a damaged service pipe without removal or replacement thereof. The blind locking service head includes a pair of independent sealing gaskets arr... | 09/04/1979 |
| 4166480 | Apparatus for forming leno selvedges in weaving machines An apparatus for forming leno selvedges in weaving machines, comprising a stationary sun wheel and two diametrically arranged planet wheels connected therewith and rotatable about their own axis in an opposite direction to their direction of rotation abou... | 09/04/1979 |
| 4166481 | Closed liquid transfer system A toxic liquid is transferred from a closed shipping container to a dispensing tank without contamination of the operator or the ambient environment by placing the container in a sealed chamber and forcing a container puncturing probe through the interior... | 09/04/1979 |
| 4166482 | Lubricated valve bag and method of lubricating valve spout A valve bag with an opening in one corner adapted to receive a spout for filling the bag, the opening having an insert therein, which insert has a light coating of a lubricant on its inner surface, so that when the bag is slipped on the filling spout some... | 09/04/1979 |
| 4166483 | Programmable fraction collector A device for filling test containers with drops of fluid under test with the containers arranged in rows and columns while permitting automatic movement of the drop discharge device to preselected coordinate positions. The center to center distance betwee... | 09/04/1979 |
| 4166484 | Method and apparatus for mixing gases in a closed chamber A method and apparatus are provided for rapidly distributing a first gas throughout a chamber that contains both the first gas and a second gas. The invention is particularly useful in the pressurizing of tennis ball centers with a low permeability gas, w... | 09/04/1979 |
| 4166485 | Gasoline vapor emission control A system of nozzles and seals provides a means to return gasoline vapors from a gasoline tank to a gasoline storage tank.... | 09/04/1979 |
| 4166486 | Nozzle for an apparatus for denaturing food products An improved nozzle for an apparatus for denaturing food products, the nozzle having an inlet end mounted on a source of flowable food product material which is propelled in a stream along the axis of the nozzle, a planar surface contacting the material an... | 09/04/1979 |
| 4166487 | Dispensing and measuring device A dispensing and measuring device for dry particulate matter includes a container having a downwardly discharging outlet therein and a guideway port extending transversely therethrough beneath the outlet. A measuring scoop having a tapered forward end is ... | 09/04/1979 |
| 4166488 | Twirl quill drill There is disclosed a hand tool for drilling or performing other rotational operations on a work piece which is specially adapted for one-hand operation in that it consists of a small handle in which there is rotatably mounted a quill; the quill extends a ... | 09/04/1979 |
| 4166489 | Key and coin holder A combined key holding device which also includes a container portion for holding one or more coins or other objects. In a preferred form, the container and key holder are molded of a unitary plastic molding which includes a retaining portion for a key ri... | 09/04/1979 |
| 4166490 | Pneumatic radial tire A pneumatic radial tire in which the oblique pulling effect due to the structure of the tire is substantially eliminated and which has substantially improved stability in maintaining a rectilinear course. The tread has circumferentially oriented rows of l... | 09/04/1979 |
| 4166491 | Radial pneumatic tires having reinforced sidewalls A pneumatic tire for a vehicle has a carcass made from cords with the ends of the cords turned up around the beads of the tire. The crown of the tire has a tread and a reinforcing breaking structure. The breaker structure has three layers of cords superim... | 09/04/1979 |
