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.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →