Search the Insulator Patent Reference Library:

Total of 70 patents found where: Class is '174'; Subclass is '139';

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T / S	Patent	Date	Description	Patentee	Category	Assigned To
		1869
U	93,410	August 10, 1869	Improvement in Insulators for Lightning Rods Lightning rod insulator clamp type and rain shield	BURNHAM, John	Lightning Rod Insulator
U	97,318	November 30, 1869	Improvement in Telegraph Insulators Hook and conical metal covering for insulators on top of pole	SAFFORD, Alfred G.	Hook
		1870
U	99,873	February 15, 1870	Improvement in Insulator for Telegraphs Self-tying via cam devise to hold wire with cap covering	FINLEY, Stephen L.	Self-tying Miscellaneous	1/2 to Marshall Lefferts
U	109,879	December 6, 1870	Improvement in Insulators for Telegraph Wires Split insulator protected by metal cage	DE MONTUFAR, Manuel	Split
		1890
U	437,685	October 7, 1890	Insulator Coating on exterior of insulator to color code line	GAYNOR, Thomas F.	Coating	The Gaynor Electric Co.
		1891
U	444,466	January 13, 1891	Electric Lamp Bracket Bracket for two insulators and support for a street light	SMITH, Thomas Carpenter	Bracket
U	445,008	January 20, 1891	Insulator Protective shield for trolley hanger insulator	VOGLER, William	Protective Shield
U	448,703	March 24, 1891	Support for Electric Line Wires Hanger insulator for trolley conductor	WIRT, Herbert C.	Hanger
U	455,107	June 30, 1891	Insulator Third rail insulator with cup to hold hygroscopic chemical and means to heat insulator to drive off moisture	MUNSIE, James F.	Third Rail
U	461,109	October 13, 1891	Device for Stretching Heavy Wires on Poles Mechanical device mounted on the crossarm with a roller to aid in stretching wires before they are attached to insulators.	BALL, Henry Price	Wire Stretcher	Edison General Electric Co.
		1892
U	470,417	March 8, 1892	Insulator for Trolley Wires Cylinder of wood used for trolley wire hanger	ANDREWS, William S. BALL, Henry Price	Wood	The Edison General Electric Co.
U	484,209	October 11, 1892	Insulator CD 285 ""Edison"" - rainshed type for under crossarm	LOCKE, Fred M.	Insulator
		1893
U	507,299	October 24, 1893	Trolley Wire Insulator Cylinder of wood used for trolley wire hanger	WILLIAMS, Mowry S.	Wood	1/2 to Stewart Worden
		1897
U	579,725	March 30, 1897	Insulator and Holder for Electric Railways Trolley hanger insulator suspended from a cable. It is composed of an inverted insulator cup and a metal cover.	KEITHLY, Willie C.	Trolley Hanger
U	584,235	June 8, 1897	Insulator for Telegraph or Other Electric Wires Clamp type in holder of similar shape to Cutter	NESMITH, Christopher C. ARNETT, George F.	Clamp Type
		1900
U	657,574	September 11, 1900	High Voltage Insulator Heater (electric) imbedded in insulator body	SINDING-LARSEN, Alf	Heater
		1904
U	758,986	May 3, 1904	Tubular Insulator Cylindrical insulator	LOCKE, Fred M.	Cylinder
		1905
U	787,442	April 18, 1905	Insulator for Electric Wires Protective shield	FLYNT, Samuel B. MAIDEN, Leaman A.	Protective Shield
U	805,169	November 21, 1905	Insulator and Wire Clamp Self-tying clamping with lever (see 552,501)	TAUBOLD, John F.	Self-tying Miscellaneous
		1906
U	838,482	December 11, 1906	Insulator for Line Conductors Insulator formed with recesses for pipe pin and metal insert crown	WEED, James Murray	Insulator
		1908
U	879,068	February 11, 1908	Insulator for High Tension Currents Odd electrose insulator with large hood over the top	STEINBERGER, Louis	Electrose
U	902,262	October 27, 1908	Insulator Protector Covering for insulator	SPARKS, Robert Romney	Covering
		1909
U	909,935	January 19, 1909	Protected Insulator Protective shield	REA, John H. B.	Protective Shield
U	911,973	February 9, 1909	Insulating High-Voltage Transmission-Lines Use of steel coil attached to insulator (instead of the conductor) to offer resistance to control lightning surge and protect the insulator	GODDARD, Walter T.	Lightning	The Locke Insulator Mfg. Co.
U	912,501	February 16, 1909	High Tension Insulator Large covers for insulators to protect them from rain and thus reduce electrical leakage	SODEN, John K.	Miscellaneous
		1910
U	967,649	August 16, 1910	Means of Visibly Indicating Faulty Insulators Colored flammable cap that fits over the top of an insulator that will burn away during an arc indicating that the insulator may be damaged	LINKE, Charles	Miscellaneous
		1911
U	980,495	January 3, 1911	Wire Retainer and Insulator Guard Self-tying via wire retainer & insulator guard	CRAWFORD, JR., George W.	Self-tying Miscellaneous
U	983,039	January 31, 1911	Insulator Protector Protective shield	FIELD, John E.	Protective Shield
U	998,359	July 18, 1911	High Voltage Insulator Suspension type	LOCKE, Fred M.	Suspension	Locke Insulator Mfg. Co.
U	1,006,040	October 17, 1911	Insulator Suspension using multiple parts connected with a cable	ALSBERG, Julius	Suspension
U	1,006,041	October 17, 1911	Insulator Suspension using multiple parts connected with a cable	ALSBERG, Julius	Suspension
U	1,006,042	October 17, 1911	Insulator Suspension using multiple parts connected with a cable	ALSBERG, Julius	Suspension
		1912
U	1,022,993	April 9, 1912	Insulator Insulator with external threads to be screwed into metal shield and entire unit screwed into underside of the crossarm	WILLIS, George W.	Insulator
U	1,036,136	August 20, 1912	Tool for Stringing Line Wires Special bracket that fits around the insulator and crossarm to loosely hold the line wire during stringing and before the line is tied to the insulator	MENAGER, Henry A.	Bracket	91/100 to John A. Menager
U	1,038,473	September 10, 1912	Insulator Suspension insulator of insulating rope and hoods	ALSBERG, Julius	Suspension
U	1,039,799	October 1, 1912	Insulator Chain for High Pressure Electric Transmission Lines Suspension chain (pork liver)	PRIESTLEY, Charles M. E.	Suspension	Societe Vedovelli Priestley
U	1,048,706	December 31, 1912	Bracket for Current Conducting Wires Side pin with notch cut out to allow a splice to pull through before mounting wire on the glass insulators	KLEINHESSELINK, Arie	Pin
		1913
U	1,057,184	March 25, 1913	Insulating Means Odd system for suspending power lines	STEINBERGER, Louis	Electrose
U	1,059,903	April 22, 1913	Insulator with Fuse Insulator with fuse in the bottom	PETTERSEN, Kristian	Fuse Holder
U	1,065,737	June 24, 1913	Insulator and Support Spiral conical insulator for tightening of line wire	SLONECKER, Abiram J.	Spiral
U	1,072,524	September 9, 1913	Insulator Odd system for suspending power lines	STEINBERGER, Louis	Electrose
U	1,072,525	September 9, 1913	Suspension Insulator Odd system for suspending power lines	STEINBERGER, Louis	Electrose
		1914
U	1,084,147	January 13, 1914	Support for Electric Service Wires Bulbous insulator mounted on a crossarm pin to allow tie-off and running multiple service wires from the main power conductor	HOPKINS, Guy	Service Drop
U	1,088,278	February 24, 1914	Rain Guard for Insulators Protective metal rain guard for bottom of skirt	HOLMES, Minot K.	Protective Shield	Hemingray Glass Co.
		1916
U	1,168,796	January 18, 1916	Wire Holder and Insulator Self-tying	FRENCH, Clarkson S.	Self-tying Miscellaneous
U	1,177,867	April 4, 1916	Insulator Protector Protective shield of metal to protect glass insulator	JOHNSON, August	Protective Shield
U	1,182,940	May 16, 1916	High Voltage Insulator Suspension, two part made of Electrose	STEINBERGER, Louis	Suspension
U	1,190,286	July 11, 1916	Insulator Self-tying non-pintype	HARLAN, Earle	Self-tying Miscellaneous
		1918
U	1,280,172	October 1, 1918	Insulator Protector Protective shield surrounding the insulator to protect it from damage.	CULLIGAN, Charles A.	Protective Shield
		1924
U	1,484,051	February 19, 1924	Insulator Cylindrical H-T ins, inner section to receive strain if outer is broken	AUSTIN, Arthur O.	Cylinder	The Ohio Brass Co.
U	1,497,318	June 10, 1924	Cover for Strain Insulators Cover for a guy strain insulator to keep it dry	AUSTIN, Arthur O.	Strain	The Ohio Brass Co.
		1928
U	1,659,731	February 21, 1928	Insulator Protective shield	GREEN, Estill I.	Protective Shield	American Telephone & Telegraph Co.
U	1,678,663	July 31, 1928	Insulator Protective shield	WILSON, Leon T.	Protective Shield	American Telephone & Telegraph Co.
U	1,685,663	September 25, 1928	Insulated Perch for Preventing Bird Trouble in Connection with Electrical Transmission Lines Arrangement of a pintype insulator and specially designed conductor above a suspension string to discourage birds from sitting above suspension string	AUSTIN, Arthur O.	Miscellaneous	The Ohio Brass Co.
U	1,691,330	November 13, 1928	Insulator Suspension string with flange attachment to balance electric field	AUSTIN, Arthur O.	Suspension	The Ohio Brass Co.
		1929
U	1,702,236	February 12, 1929	High Tension Insulator Construction Suspension disk with ""capacity gland"" to prevent electrical streamers and provide a balanced electrical field	AUSTIN, Arthur O.	Suspension	The Ohio Brass Co.
U	1,706,488	March 26, 1929	Insulator Fogbowl via metal pan under skirt	HAWLEY, Kent A.	Fog Type	Locke Insulator Corp.
U	1,733,067	October 22, 1929	Insulator Multipart with metal cap to prevent damage due to temp changes	MARVIN, Richard H.	Multipart	The R. Thomas & Sons Co.
U	1,735,560	November 12, 1929	Insulator for Withstanding Fog Conditions Multipart porcelain insulator with heating elements embedded in the surface to keep surface of insulator dry during fog	AUSTIN, Arthur O.	Fog Type	The Ohio Brass Co.
		1932
U	1,848,622	March 8, 1932	Insulator Suspension rod with metallic shields to keep upper and lower parts dry to prevent electrical leakage	GOUVERNEUR, Minor F. H.	Suspension	Locke Insulator Corp.
		1934
U	1,967,654	July 24, 1934	Insulator Fog type multipart & suspension insulator with porous coating, wire screen for RFI	AUSTIN, Arthur O.	Fog Type	The Ohio Brass Co.
U	1,976,378	October 9, 1934	Aviation Marker Aviation warning light attached to a suspension insulator	VROOMAN, Edward C.	Misc	Locke Insulator Corp.
		1937
U	2,099,540	November 16, 1937	Insulator Shield Metal skirt on CD 154	SMITH, Donald H.	Insulator	Western Union Telegraph Co.
		1938
U	2,135,359	November 1, 1938	Suspension Insulator Fog type suspension insulator	TAYLOR, John J. BOVARD, Floyd D.	Fog Type	The Ohio Brass Co.
U	2,135,558	November 8, 1938	Insulator Shield Protective shield	BOTT, Perry J.	Protective Shield
		1939
U	2,155,848	April 25, 1939	Insulator Helical suspension & helical post type	TAYLOR, John J.	Helical	The Ohio Brass Co.
		1940
U	2,194,189	March 19, 1940	Pole Line Insulator CD 142, CD 142.4 - tin & iron for iridized coating to reduce water adherence	WHEELER, Herbert H. MCGINNIS, Orris THORDARSON, William	Insulator	Western Union Telegraph Co.
		1945
U	2,383,090	August 21, 1945	Electric Insulator Suspension insulator with improved cementing methods	TOROK, Julius J.	Suspension	Corning Glass Works
		1948
U	2,437,593	March 9, 1948	Reinforced Wire-Contacting Insulator Assembly Transposition bracket using spool insulators	CASE, Rogers	Transposition
		1966
U	3,251,014	May 10, 1966	Electrical Coupling Device Miscellaneous internal coupling device to obtain a voltage from high voltage power line	STEIN, Laurence B.	Miscellaneous	Sigma Instruments, Inc.

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