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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 5286142 | Reduced moment anchor hub An earth anchor apparatus having reduced bending moment characteristics is provided, including a longitudinally extending hub having first and second axial ends. Affixed to the hub between the ends thereof is a radially extending load-bearing element, inc... | 02/15/1994 |
| 5224310 | Hand-installed landscape foundation A manually installed landscape foundation (20, 56) adapted for supporting a yard light (22) or similar device requiring connection to a utility line (47) such as an electrical cable or gas line is provided having a lowermost anchor shaft (24, 64) equipped... | 07/06/1993 |
| 5213448 | Underpinning bracket for uplift and settlement loading An apparatus for stabilizing the foundation of a building structure includes a support assembly fastened to the foundation and a screw anchor installed in the earth in generally upright disposition with an upper end thereof located adjacent the foundation... | 05/25/1993 |
| 5212218 | Hydrophobic, erodiable synthetic resin composition for electrical insulators Improved synthetic resin insulators having enhanced arc track resistance and reduced UV light degradation characteristics are provided which include a continuous resin phase and a discrete, discontinuous hydrophobic phase in the form of discrete, suspende... | 05/18/1993 |
| 5181164 | Compartment barrier for padmounted switchgear In an electrical distribution apparatus a switchgear device has a fixed element disposed within a shielded region of an enclosure of the apparatus, and a movable element supported for movement between a closed position in contact with the fixed element an... | 01/19/1993 |
| 5171107 | Method of underpinning existing structures A low cost, easy to install underpinning apparatus (14) for supporting below-grade structural footings such as foundations (10) or the like is provided which makes use of a power installed, load-bearing helix-type screw anchor (16) together with a connect... | 12/15/1992 |
| 5149928 | Arc spinner interrupter having contact bounce suppressor An arc spinner interrupter apparatus includes a first electrical contact assembly having a fixed contact and an arcing element. A second electrical contact assembly includes an arm selectively movable along a path into and out of engagement with the fixed... | 09/22/1992 |
| 5103364 | Recloser apparatus A recloser apparatus is provided with an enclosure or tank (40) in which a current interrupter assembly (49) is disposed that includes a pair of relatively movable contacts (50, 54) movable between a closed, current-carrying position and an open, current-... | 04/07/1992 |
| 5099382 | Electrical recloser having external mounting arrangement for electronics assembly An electrical recloser apparatus includes a tank (10) having bottom, top and side walls (18, 22, 16) which define an interior, sealed space (14), and a current interrupter (44) disposed within the sealed space (14) and including a pair of relatively movab... | 03/24/1992 |
| 5076449 | Load measurement system for boom mounted auxiliary arm A boom lift apparatus for use on a truck having a boom and a boom mounted bucket includes a mast selectively positionable on the boom at any of a plurality of different angles and supported on the boom for limited axial movement by a hydraulic cylinder wh... | 12/31/1991 |
| 5019937 | Circuit improvement apparatus having combination current limiting fuse and resettable vacuum switch to prevent single-phasing of three-phase loads A current interrupting apparatus adapted to be interposed in either a single or multiple phase electrical circuit includes a fuse interposed in each phase of the circuit. A current interrupter is electrically connected in series with each fuse for interru... | 05/28/1991 |
| 5015810 | Arc spinner interrupter An arc spinner interrupter includes a first fixed electrical contact and a ring electrode coupled to the fixed contact through a field coil surrounding the ring electrode. A second electrical contact has an arm which moves along a path perpendicular to th... | 05/14/1991 |
| 5015514 | Pultruded or filament wound synthetic resin fuse tube Improved arc-suppressing fuse tubes of the type used in electrical cutouts is provided which includes a fluid epoxy resin matrix core designed, upon experiencing high temperature arcing conditions, to generate sufficient moisture and arc-suppressing gases... | 05/14/1991 |
| 5011336 | Underpinning anchor system A low-cost easy to install underpinning apparatus (14) for supporting below-grade structural footings such as foundations (10) or the like is provided which makes use of a power installed, load-bearing helix-type screw anchor (16) together with a connecti... | 04/30/1991 |
| 4996806 | Lead point for helical earth anchor A lead element is provided for use with an earth anchor including an elongated rod and an anchor member having a longitudinal hub provided with first and second axial ends and presenting a bore extending axially therethrough, and an outwardly extending lo... | 03/05/1991 |
| 4981000 | Penetration of power installed anchor An earth anchor apparatus adapted to be driven by a source of rotational driving force into unbroken soil includes a longitudinally extending hub having first and second axial ends. A recess is provided in one axial end of the hub by which the anchor may ... | 01/01/1991 |
| 4980527 | Arc spinner interrupter An arc spinner interrupter includes a first fixed electrical contact and a ring electrode coupled to the fixed contact through a field coil surrounding the ring electrode. A second electrical contact has an arm which moves along a path perpendicular to th... | 12/25/1990 |
| 4951022 | Sensitive latch and trip mechanism A sensitive latch and trip mechanism includes a latch plate supported for pivotal movement under the influence of a load, and a latch lever supported for pivotal movement about a lever axis. The lever includes a latching surface disposed in a latching sur... | 08/21/1990 |
| 4935715 | Sectionalizer with externally mounted electronic controller An electronic sectionalizer includes mounting structure including first and second electrical contacts spaced from one another and electrically conductive structure having an external surface and provided with first and second electrical terminals adapted... | 06/19/1990 |
| 4886945 | Replaceable bushing and contact assembly for blade type air insulated switchgear Improved switchblade-type, air dielectric switchgear apparatus is provided which utilizes a minimum of supporting insulators and incorporates readily field-replaceable bushing assemblies so that the switchgear apparatus may be serviced in the field using ... | 12/12/1989 |
| 4870387 | Beam strengthened cutout insulator An improved, integrally cast, synthetic resin insulator (22) especially adapted for use in an electrical cutout device (20) is provided which can be readily fabricated and gives greatly enhanced beam strength and arc track resistance characteristics. The ... | 09/26/1989 |
| 4804809 | Motor operator for padmount switchgear A motor operator for local or remote shifting of switchgear contacts toward either open or closed positions includes a reversible motor and rotatable drive screw mounted on common support structure for simultaneous pivoting movement as a drive nut transla... | 02/14/1989 |
| 4798922 | Spring actuated latch, load and trip mechanism for switchgear Improved blade-type, air dielectric switchgear apparatus is provided having spring loaded, fast acting, operator independent mechanism for selective opening and closing of internal switch contacts. Preferably, the operating mechanism includes a pair of op... | 01/17/1989 |
| 4797777 | Electronic sectionalizer and mounting structure for switchgear An electronic sectionalizer mechanism includes upper and lower contact mounting structure, and a sectionalizer tube carrying a logic circuit is telescopically received within the lower contact mounting structure. Once fault current conditions downstream o... | 01/10/1989 |
| 4781348 | Adjustable banded aluminum transformer mount A mounting assembly for supporting electrical apparatus such as transformers and the like on a utility pole includes spaced, equipment supporting brackets that are interconnected and secured to the pole by means of elongated, toothed plates. End regions o... | 11/01/1988 |
| 4768010 | Latch and pivot mechanism for electronic sectionalizer mounting structure A pivot mechanism for drop-out of an electronic sectionalizer tube from an upper contact of mounting structure is arranged so that substantially the entire force released by an actuator fired by a sectionalizer logic circuit immediately causes the tube to... | 08/30/1988 |
| 4752760 | Electrical device end cap connection assembly using rigid sealing material An end cap connection assembly for use in connecting the metallic end caps of an electrical device such as current limiting fuses or lightning arrestors to associated insulative housings is provided which gives a strong mechanical bond as well as a leak-p... | 06/21/1988 |
| 4746381 | Method of making an end cap connection for a fluid-resistance electrical device An end cap connection provides a strong mechanical bond as well as a fluid resistant seal between an electrically insulative tubular member and a conductive end piece or cap. The cap is provided with a generally U-shaped channel, and a quantity of synthet... | 05/24/1988 |
| 4713503 | Three phase vacuum switch operating mechanism with anti-bounce device for interrupter contacts The velocity of a snap action, spring loaded vacumm switch closing mechanism is substantially reduced by impacting a lever of the mechanism against a first swingable energy absorbing arm which, in turn, pivots to contact a pair of second energy absorbing ... | 12/15/1987 |
| 4707964 | Method of providing support for an elongated tower leg An improved tower foundation is provided which is inexpensive to manufacture and when installed, serves to securely support a leg of power transmission towers and the like. The tower foundation hereof includes a screw-type earth anchor member having a tub... | 11/24/1987 |
| 4688143 | Fuse well and housing for pad-mounted, double fused switchgear An improved, lowcost double-fused vacuum switchgear apparatus designed for underground electrical distribution systems is provided which makes use of a specially configured oil tank-defining wall and insulative protective fuse well sleeves to give enhance... | 08/18/1987 |
| 4686502 | Terminal bracket structure for a current limiting fuse A current limiting fuse has an electrical subassembly which includes fusible elements that are helically wound about a plurality of support plates which, in turn, are secured on each end to a terminal bracket. A leg member electrically and mechanically in... | 08/11/1987 |
| 4641727 | Electrically insulated temporary aerial platform An electrically insulated aerial platform assembly for use by a lineman on or around utility poles is provided which is constructed to maintain the actual work platform in an electrically insulated condition relative to the utility pole itself and the pol... | 02/10/1987 |
| 4628294 | End cap assembly for a fluid resistant electrical device An end cap assembly for a fluid resistant electrical device includes a solderable insulating tube end cap and an insert having a solderable cylindrical body portion positioned within a tubular opening of the end cap. The body portion of the insert has a c... | 12/09/1986 |
| 4561231 | Tower-foundation anchor interconnection An improved tower foundation is provided which is inexpensive to manufacture and when installed, serves to securely support a leg of power transmission towers and the like. The tower foundation hereof includes a screw-type earth anchor member having a tub... | 12/31/1985 |
| 4546341 | Electrical cutout having a linkbreak lever An electrical cutout is disclosed for electrical connection between a line terminal and a load terminal. The cutout includes an insulator having a first and a second end. A first electrical conductor is rigidly secured to the first end of the insulator, t... | 10/08/1985 |
| 4499698 | Method and apparatus for anchoring retaining walls and the like, and installation therefor A recoverable earth-retaining wall anchoring device and method is disclosed which allows the erection of a retaining wall in a quick, inexpensive manner and permits proof-load testing of the anchor during or immediately after installation, resulting in si... | 02/19/1985 |
| 4483058 | Impact hammer elbow tool A simplified, impulse-type pulling and installing tool for appliances such as electrical connector elbows is provided which in use generates a sharp impact force to facilitate quick, safe elbow manipulation even under electrical load, thereby reducing the... | 11/20/1984 |
| 4467575 | Internally driven earth anchor having small diameter anchor rod An improved modular screw anchor is provided which is adaptable for use with many sizes of elongated anchor rods, is inexpensive to manufacture, can be installed in a wide variety of soil conditions including rocky soils, and permits use of a number of wr... | 08/28/1984 |
| 4348561 | Mechanical device for picking up an electrical load A hot line load pick-up hand tool for use in electrical transmission and distribution systems has improved electrical conductivity and is capable of temporarily picking up and safely carrying high voltages being transmitted by energized main and branch fe... | 09/07/1982 |
