Bizarre Patents
Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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| Number | Title | Issue Date |
| 4135384 | Method of determining electrolyte leakage in hermetically sealed electrochemical cell Hermetically sealed electrochemical cells are checked for electrolyte leakage by immersing the completed cell in a liquid medium such as chemically pure deionized water and monitoring the medium for electrical and/or chemical changes that would be caused ... | 01/23/1979 |
| 4112739 | Process and apparatus for the isostatic measurement of the permeability of a material to the passage therethrough of a gas or vapor A gas-tight chamber has positioned therein a material to be tested such that first and second opposite sides of the material are isolated from each other within the chamber. An enclosed reference circuit includes a first portion of the interior of the cha... | 09/12/1978 |
| 4089208 | Pressure test fixture for pressurized containers Apparatus for testing pressurized sealed containers for leakage including a fluid filled tank for receiving the container to be tested. The tank is comprised of a transparent side wall, a bottom wall and a top wall. Means are provided for piercing the con... | 05/16/1978 |
| 4085521 | Air-steam interface in continuous vulcanization process for allowing accurate optical measurements A novel process and apparatus are disclosed which permit an air-stream interface to be maintained in a continuous vulcanization cable production process in order to enable accurate optical measurements of the cable to be taken at all times. Specifically, ... | 04/25/1978 |
| 4064036 | Pressure testing of catalyst loaded reactors In the pressure testing of catalyst-loaded reactors with nitrogen gas at elevated temperatures, it is found that certain types of zeolite catalysts are substantially degraded in activity. The catalysts concerned comprises a Group VIII noble metal in an ox... | 12/20/1977 |
| 4047422 | Process for measuring permeability to gas of walls and/or closure of three-dimensional encasing elements A filled or gas encasing element to be tested is placed in a measuring chamber. The free space between the element and the chamber is filled with filler elements to prevent bursting or inflation of the element. A vacuum is produced in the chamber, and the... | 09/13/1977 |
| 4034598 | Method for testing seals of electrical energy storage devices Seal integrity tests are conducted on electrical energy storage devices, such as batteries, by the application, to the device under test, of oxygen at elevated pressures.... | 07/12/1977 |
| 4024956 | Method and apparatus for detecting leaks A method and apparatus particularly adapted for use in continuously testing for leaks in a plurality of generally fluid-tight and flexible packages which are conveyed along a predetermined path. This particular apparatus embodies first means for selective... | 05/24/1977 |
| 3998091 | Test apparatus for determining quality of packaging for vacuum packaged products Apparatus is disclosed which holds a vacuum packaged product and applies a stress on the package to determine the quality of the package by measuring package deflection resulting from the stress.... | 12/21/1976 |
| 3991622 | Apparatus for measuring airtightness of sealed body An apparatus for measuring airtightness of sealed bodies such as waterproof wristwatches. The apparatus comprises airtightly sealed container for an object to measure, means connected to the container for varying inner pressure thereof, and means for elec... | 11/16/1976 |
| 3988920 | Method for detecting a leak in a reaction tube when forming a IIIA-VB compound In an apparatus for the preparation of compounds in which one of the components is a highly volatile reactive component, in particular when preparing gallium phosphide, under pressure in an ampoule located in a pressure vessel, between 0.5 and 25% by volu... | 11/02/1976 |
| 3985318 | Helicopter blade crack indicator Method and apparatus for continuously detecting cracks in aircraft blades while in flight. A hollow blade is sealed with a pressure differential, either above or below atmospheric. A reduction in the pressure differential such as results from cracks, is d... | 10/12/1976 |
| 3978710 | Apparatus for determining the degree of gas impermeability for watch cases and the like articles An apparatus for testing the gas impermeability of watch cases or other small articles comprises two enclosures. A bellows forms part of a hermetic separation between the enclosures, the bellows serving to move the movable plate of a variable condenser. T... | 09/07/1976 |
| 3973249 | Apparatus for detecting leakage from container and method therefor An apparatus for detecting leakage of water molecules through a defective portion, if any, of a container which comprises a vessel having a flange at the periphery thereof and a lid heat sealed to said flange and is filled with water-contained materials, ... | 08/03/1976 |
| 3960002 | Medical liquid container with tactile sterility indicator and method of testing container A container for sterile medical liquids that has a double cap sealed closure system. A deformable thermoplastic top wall of an outer cap is spaced a distance from a top wall of an inner cap when properly sterilized. Thumb pressure on the outer cap brings ... | 06/01/1976 |
| 3956923 | Method of detecting small gas leaks in filled aerosol containers A process and apparatus for detecting small gas leaks in filled, pressurized containers. Each container to be tested, or that portion of each container to be tested, is enclosed and sealed in a test chamber. The space within the test chamber is evacuated ... | 05/18/1976 |
| 3938519 | Medical liquid container with a toggle film leak tester and method of leak testing with same A parenteral liquid bottle with a sealed leak testing chamber in its closure. This leak testing chamber has an opening sealed off by a protective thermoplastic-metal film with a permanently stretched section extending across the opening. This permanently ... | 02/17/1976 |
