Assignee
JOY MFG CO
144 granted patents·3,232 citations·filing 1972–1987
Top patents by PatentIndex Score
144 records- 0196US4585207AExpanding gate valve with pneumatic actuatorJOY MFG CO·Filed 1985·Granted Apr 29, 1986·118 cites·4 claims
- 0295US4437363ADual camming action jaw assembly and power tongJOY MFG CO·Filed 1981·Granted Mar 20, 1984·159 cites·25 claims
- 0395US4415024AHeat exchanger assemblyJOY MFG CO·Filed 1980·Granted Nov 15, 1983·66 cites·19 claims
- 0495US4339031AMonorail suspended conveyor systemJOY MFG CO·Filed 1979·Granted Jul 13, 1982·94 cites·29 claims
- 0591US4469446AFluid handlingJOY MFG CO·Filed 1982·Granted Sep 4, 1984·112 cites·6 claims
- 0691US3992061AMining cutter bit assemblyJOY MFG CO·Filed 1975·Granted Nov 16, 1976·60 cites·15 claims
- 0790US4229124AAutomatic roof bolting system for minesJOY MFG CO·Filed 1979·Granted Oct 21, 1980·87 cites·9 claims
- 0889US4362475ACompressor inlet valveJOY MFG CO·Filed 1981·Granted Dec 7, 1982·47 cites·30 claims
- 0987US4516752AMechanically preloaded packing assemblyJOY MFG CO·Filed 1984·Granted May 14, 1985·50 cites·6 claims
- 1086US4568058ADual stage hydraulic actuator for expanding gate valveJOY MFG CO·Filed 1985·Granted Feb 4, 1986·47 cites·5 claims
- 1186US4491154ADouble acting pilot valveJOY MFG CO·Filed 1983·Granted Jan 1, 1985·45 cites·1 claims
- 1285US4750274ASludge processingJOY MFG CO·Filed 1987·Granted Jun 14, 1988·50 cites·18 claims
- 1385US4570942ADual diameter valve stem packingJOY MFG CO·Filed 1985·Granted Feb 18, 1986·47 cites·5 claims
- 1484US4682757ASecondary backseat for gate valveJOY MFG CO·Filed 1986·Granted Jul 28, 1987·42 cites·25 claims
- 1584US4111066AControl meansJOY MFG CO·Filed 1976·Granted Sep 5, 1978·39 cites·6 claims
- 1684US3942838ABit coupling meansJOY MFG CO·Filed 1974·Granted Mar 9, 1976·48 cites·11 claims
- 1783US4420277AMine roof driller-bolter apparatus and methodJOY MFG CO·Filed 1981·Granted Dec 13, 1983·70 cites·41 claims
- 1880US4650254ABit holderJOY MFG CO·Filed 1984·Granted Mar 17, 1987·42 cites·11 claims
- 1979US4643395AValve with protected seatsJOY MFG CO·Filed 1985·Granted Feb 17, 1987·35 cites·4 claims
- 2079US4059963AMethod of mine backfilling and material thereforJOY MFG CO·Filed 1976·Granted Nov 29, 1977·38 cites·8 claims
- 2178US4356367AElectric switchJOY MFG CO·Filed 1979·Granted Oct 26, 1982·19 cites·43 claims
- 2277US4402383ADrill motor enclosureJOY MFG CO·Filed 1981·Granted Sep 6, 1983·32 cites·18 claims
- 2377US4005621ADrilling tongJOY MFG CO·Filed 1976·Granted Feb 1, 1977·48 cites·16 claims
- 2476US4519715APropellerJOY MFG CO·Filed 1983·Granted May 28, 1985·38 cites·10 claims
- 2576US4503879APlug mechanism for wellhead toolJOY MFG CO·Filed 1983·Granted Mar 12, 1985·47 cites·9 claims
- 2675US4500228AGranular material pneumatic transport apparatusJOY MFG CO·Filed 1982·Granted Feb 19, 1985·30 cites·12 claims
- 2775US4476975AMonorail suspended conveyor systemJOY MFG CO·Filed 1981·Granted Oct 16, 1984·24 cites·14 claims
- 2875US4250773ARotary tong incorporating interchangeable jaws for drill pipe and casingJOY MFG CO·Filed 1979·Granted Feb 17, 1981·43 cites·6 claims
- 2974US4852724ACrawler-mounted conveying trainJOY MFG CO·Filed 1986·Granted Aug 1, 1989·29 cites·25 claims
- 3074US4535967AExpanding gate valve with fluid-powered actuatorJOY MFG CO·Filed 1984·Granted Aug 20, 1985·32 cites·3 claims
- 3174US4310336AFilter bag attachmentJOY MFG CO·Filed 1980·Granted Jan 12, 1982·33 cites·6 claims
- 3274US4282937AHammerJOY MFG CO·Filed 1979·Granted Aug 11, 1981·25 cites·31 claims
- 3374US4101333AMethod of mine backfilling and material thereforJOY MFG CO·Filed 1977·Granted Jul 18, 1978·28 cites·2 claims
- 3473US4511168ASlip mechanismJOY MFG CO·Filed 1983·Granted Apr 16, 1985·41 cites·12 claims
- 3573US4494568AHigh pressure sensor baseJOY MFG CO·Filed 1983·Granted Jan 22, 1985·25 cites·8 claims
- 3673US4261953ALime slaking apparatusJOY MFG CO·Filed 1979·Granted Apr 14, 1981·29 cites·9 claims
- 3773US4109362AMethod of making screw rotor machine rotorsJOY MFG CO·Filed 1977·Granted Aug 29, 1978·14 cites·8 claims
- 3872US4106573ADrillJOY MFG CO·Filed 1976·Granted Aug 15, 1978·21 cites·13 claims
- 3971US4556224ACrossover seal assemblyJOY MFG CO·Filed 1984·Granted Dec 3, 1985·37 cites·11 claims
- 4070US4348635ADetecting and measuring the position of a break in solid formations by measuring the capacitance of an enlongated element embedded thereinJOY MFG CO·Filed 1979·Granted Sep 7, 1982·23 cites·11 claims
- 4170US4342486ACutter bit holderJOY MFG CO·Filed 1980·Granted Aug 3, 1982·22 cites·20 claims
- 4268US4569489ACable tension control deviceJOY MFG CO·Filed 1984·Granted Feb 11, 1986·35 cites·19 claims
- 4368US4363519AContinuous mining machineJOY MFG CO·Filed 1980·Granted Dec 14, 1982·31 cites·11 claims
- 4468US4074771ARock drillJOY MFG CO·Filed 1976·Granted Feb 21, 1978·28 cites·19 claims
- 4567US4667812AConveyor belt assembly and methodJOY MFG CO·Filed 1981·Granted May 26, 1987·17 cites·21 claims
- 4667US4514796AMethod and apparatus for controlling the position of a hydraulic boomJOY MFG CO·Filed 1982·Granted Apr 30, 1985·47 cites·6 claims
- 4766US4515174AGate valve with internal pressure relief meansJOY MFG CO·Filed 1983·Granted May 7, 1985·23 cites·6 claims
- 4866USD270441SElectrical switchJOY MFG CO·Filed 1980·Granted Sep 6, 1983·10 cites·1 claims
- 4965US4601308ABall valve with seat loading mechanismJOY MFG CO·Filed 1985·Granted Jul 22, 1986·25 cites·5 claims
- 5065US4401645ALime slaking methodJOY MFG CO·Filed 1982·Granted Aug 30, 1983·24 cites·13 claims
Showing the top 50 of 144 patent records by PatentIndex Score.
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