Bizarre Patents
A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4158869 | Line protector A line protector for protecting telephone lines and the like from over-voltage or over-current conditions includes a primary arrester element and a secondary arrester element that provides back-up protection upon a fail open of the primary arrester elemen... | 06/19/1979 |
| 4133019 | Air gap back-up surge arrester Disclosed herein is a three-element gas tube fail-safe station protector of known design modified to incorporate a back-up air gap system. To the ground terminal stud of the protector is added a lateral conductive member defining a pair of blade-shaped gr... | 01/02/1979 |
| 4086648 | Protector module A protector module for use in protecting telephone lines includes an insulating base with two sets of line pins and a ground pin extending from one side of the base. Disposed on the other side of the base is a pair of spaced apart line contacts with one o... | 04/25/1978 |
| 4074337 | Protector for telecommunication lines A protector for telecommunications lines has an elongated housing with a ground bar extending up one side. End webs extend from the opposite ends of the ground bar across the housing, and a central web extends from the bar also across the housing. A prote... | 02/14/1978 |
| 4069509 | Three element gas tube protector module A telephone protector module utilizing a three element gas tube discharge device and having heat-actuated overload protection means causing both tip and ring circuits to be simultaneously grounded upon the occurrence of an overload.... | 01/17/1978 |
| 4062054 | Multi-function fail-safe arrangements for overvoltage gas tubes Disclosed herein are gas tube arrestor configurations employing multiple-function fail-safe elements which coact with the gas tube arrestor to define both a fusible path for fail-safe shorting and grounding of the arrestor in the event of certain forms of... | 12/06/1977 |
| 4062053 | Protector module A protector module for use in mounting a gas tube arrester or carbon arrester assembly in a telephone central office protection system has an insulating base and a conductive case or cover. The base has a channel with a projecting stop on one side, in whi... | 12/06/1977 |
| 4004192 | Protector module for telephone systems An improved telephone line protection device including means for grounding excessive currents and voltages. The disclosed embodiment includes temperature-actuated resilient means for shorting excessive currents directly to a source of ground potential, wi... | 01/18/1977 |
| 4004263 | Protector module for telephone systems An improved telephone line protection device including means for grounding excessive currents and voltages. The disclosed embodiments include temperature actuated resilient means for shorting currents directly to a source of ground potential without passi... | 01/18/1977 |
| 4002949 | Transformer protective system A current limiting fuse and an oil expulsion or weak link type fuse are connected in series with each other and with a transformer primary winding and a grounded element having a part disposed adjacent one end of the expulsion fuse is arranged so that an ... | 01/11/1977 |
| 4002952 | Electric overvoltage arrester with carbon air gap and gas tube The invention concerns overvoltage arresters and its basic objective is to combine a carbon air gap device with a novel and improved surge voltage gas tube, the combination also including a fusible element and a coil spring. The coil spring becomes effect... | 01/11/1977 |
| 3993933 | Electric overvoltage gas arrester with metallic shorting mechanism The overvoltage arrester disclosed in the drawings employs a surge voltage gas tube in combination with a fusible element and also unique and novel means for effecting a metallic connection between the transmission line and ground in the event the fusible... | 11/23/1976 |
| 3975664 | Line protector for communication circuit A line protector includes a body having first and second end terminals and an intermediate terminal for connection to a ground potential. End caps are mounted on the end terminals and have peripheral edges maintained spaced from the intermediate terminal ... | 08/17/1976 |
| 3947797 | Circuit interrupting means A circuit interrupting device comprising a vacuum fuse having an evacuated envelope wherein one or more fusible elements electrically connect spaced open ends of aligned tubular electrodes which have respective sealable ends external of the envelope and p... | 03/30/1976 |
| 3936785 | Gas tube arrester subassembly A gas tube arrester subassembly for use in a modular component type telephone central office protection system includes a gas tube arrester having a spacer tube with an electrode at each end. One of the electrodes is insertable into an open end of a gener... | 02/03/1976 |
