WO1994028326B1 - Overheating protection device for rotational control apparatus - Google Patents
Overheating protection device for rotational control apparatusInfo
- Publication number
- WO1994028326B1 WO1994028326B1 PCT/US1994/006120 US9406120W WO9428326B1 WO 1994028326 B1 WO1994028326 B1 WO 1994028326B1 US 9406120 W US9406120 W US 9406120W WO 9428326 B1 WO9428326 B1 WO 9428326B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fitting
- bore
- escape port
- plug
- cylinder
- Prior art date
Links
- 239000012530 fluid Substances 0.000 claims abstract 18
- 239000000463 material Substances 0.000 claims abstract 15
- 238000007789 sealing Methods 0.000 claims 11
- 230000004323 axial length Effects 0.000 claims 3
- 239000004020 conductor Substances 0.000 claims 2
- 239000007791 liquid phase Substances 0.000 claims 2
- 239000007790 solid phase Substances 0.000 claims 2
- 230000001351 cycling Effects 0.000 abstract 1
Abstract
A device (110) for protecting a clutch (C) against overheating from externally caused problems such as rapid cycling is disclosed including a heat conductive plug (120) sealed in an escape port (116) of a fitting (112) by fuse material (124) such as lead. The fitting (112) is threadably, sealably received in a bore (104) formed in the friction interface disc (12) of the clutch (C). The bore (104) is in fluid communication with the cylinder (30) of the clutch (10) which slideably mounts a piston (10) connected to the friction interface disc (12). Fluid pressure introduced into the cylinder (30) by conventional conduit means (42) moves the piston (10) therein against the bias of a spring (56) when fluid flow from the cylinder (30) through the bore (104) is blocked by the overheating protection device (110). When heat resulting from clutch temperatures exceeding normal operating temperatures and conducted to the fitting (112) and the device (110) is sufficient to melt the fuse material (124), the plug (120) is ejected from the escape port (116) by the fluid pressure communicated from the cylinder (30) to the bore (104). The fluid pressure of the cylinder (30) will be insufficient to move the piston (10) against the bias of the spring (56) when the escape port (116) is not sealed by the plug (120) and fuse material (124).
Claims
1. Device (110) for providing overheating protection for an apparatus (C) having a bore (104) in fluid communication with fluid pressure, comprising a fitting (112) formed of heat-conductive material, with the fitting (112) having an axially inner end, an axially outer end, and an outer surface (114) adapted for sealing receipt in the bore (104) of the apparatus (C) , an escape port (116) formed in the fitting (112) and extending from the axially inner end, a plug (120) , and a fuse material (124) having a first condition in a normal temperature range and a second condition when the normal temperature range is exceeded, with the fuse material (124) sealing the plug (120) in the escape port (116) for sealing the escape port (116) of the f tting (112) in the normal temperature range but with the fuse material (124) unable to hold the plug (120) in the escape port (116) under fluid pressure and for allowing escape of fluid through the escape port (116) when the normal temperature range is exceeded, characterized in that the escape port (116) extends to the axially outer end; a tool bore (118) for receipt of a tool for positioning the fitting (112) in sealing receipt in the bore (104) and adapted to locate the fitting (112) totally within the bore (104) , with the tool bore (118) being of a radial size larger than the escape port (116) and extending from the axially outer end of the fitting (112) towards but spaced from the axially inner end of the fitting (112) and axially in line with and in communication with the escape port (116) , with the plug (120) being of a radial size smaller than the escape port (116) and than the tool bore (118) and of an axial length less than the escape port (116) between the axially inner and outer ends, with the plug (120) passing from the escape port (116) into the tool bore (118) and beyond the axially outer end of the fitting (112) when the fuse material (124) is unable to hold the plug (120) in the escape port (116) .
2. The overheating protection device of claim 1 wherein the first condition of the fuse material (124) is a solid phase and the second condition of the fuse material (124) is a liquid phase.
3. The overheating protection device of claim 1 or 2 wherein the outer surface (114) of the fitting (112) includes external threads adapted for threadable and sealing receipt in internal threads formed in the bore (104) .
4. The overheating protection device of any preceding claim wherein the plug (120) and the escape port (116) are cylindrical in shape of a constant diameter.
5. The overheating protection device of any preceding claim wherein the tool bore (118) is hexagonal in cross section.
6. The overheating protection device of any preceding claim wherein the plug (120) has an axial length equal to or less than the spacing of the tool bore (118) from the axially inner end, with the plug (120) positioned outside of the tool bore (118) in the normal temperature range.
7. Rotational control apparatus (C) comprising a cylinder (30) slideably mounting a piston (10) for movement in a first direction by fluid pressure introduced into the cylinder (30) characterized in a bore (104) in fluid communication with the cylinder (30) , and a device (110) for providing overheating protection in the event that the temperature of the apparatus (C) exceeds normal operating temperature ranges for the apparatus (C) comprising a fitting (112) formed of heat-conductive material, with the fitting (112) having an outer surface (114) for sealing receipt in the bore (104) of the apparatus (C) , with the fitting (112) having an escape port (116) ; and means (120, 124) for sealing the escape port (116) of the fitting (112) in the normal temperature range of the apparatus (C) and for allowing escape of fluid from the cylinder (30) when the normal temperature range is exceeded to prevent fluid pressure from moving the piston (10) in the first direction.
8. The rotational control apparatus of claim 7 wherein the overheating protection device (110) is of a one-time fuse-type requiring replacement after fluid is allowed to escape.
9. The rotational control apparatus of claim 7 or 8 further comprising, in combination: means (56) for moving the piston (10) in a second direction opposite to the first direction.
10. The rotational control apparatus of claim 9 wherein the moving means comprises a spring (56) .
11. The rotational control apparatus of any claim 7-10 wherein the fitting (112) has an axially inner end and an axially outer end, with the escape port (116) extending in the fitting (112) from the axially inner end to the axially outer end; and wherein the overheating protection device (110) further comprises, in combination: a tool bore (118) for receipt of a tool for positioning the fitting (112) in sealing receipt in the bore (104) and adapted to locate the fitting (112) totally within the bore (104) , with the tool bore (118) being of a radial size larger than the escape port (116) and extending from the axially outer end of the fitting (112) towards but spaced from the axially inner end of the fitting (112) and axially in line with and in communication with the escape port (116) , a plug (120) of a radial size smaller than the escape port (116) and than the tool bore (118) and of an axial length less than the escape port (116) between the axially inner and outer ends, and a fuse material (124) having a first condition in the normal temperature range and a second condition when the normal temperature range is exceeded, with the fuse material (124) sealing the plug (120) in the escape port (116) for sealing the escape port (116) of the fitting (112) in the normal temperature range but with the fuse material (124) unable to hold the plug (120) in the escape port (116) under fluid pressure and for allowing escape of fluid through the escape port (116) when the normal temperature range is exceeded, with the plug (120) passing from the escape port (116) into the tool bore (118) and beyond the axially outer end of the fitting (112) when the fuse material (124) is unable to hold the plug (120) in the escape port (116) .
12. The rotational control apparatus of claim 11 wherein the first condition of the fuse material (124) is a solid phase and the second condition of the fuse material (124) is a liquid phase.
13. The rotational control apparatus of claim 11 or 12 wherein the outer surface (114) of the fitting (112) includes external threads adapted for threadable and sealing receipt in internal threads formed in the bore (104) .
14. The rotational control apparatus of any claim 11-13 wherein the plug (120) and the escape port (116) are cylindrical in shape of a constant diameter.
15. The rotational control apparatus of any claim 7-14 wherein the cylinder (30) and piston (10) are rotatable about an axis.
16. The rotational control apparatus of claim 15 further comprising, in combination: an interface disc (12) connected to and movable with the piston (10) , with the bore (104) formed in the interface disc (12) .
17. The rotational control apparatus of claim 16 wherein the piston (10) is slideably mounted in the cylinder (30) for movement parallel to the axis, wherein the bore (104) is parallel to and spaced from the axis radially outward of the piston (10) and cylinder (30) ; and wherein the bore (104) is in fluid communication with the cylinder (30) by a radially extending passage (106) formed in the interface disc (12) .
18. The rotational control apparatus of any claim 15-17 further comprising, in combination: a stationary shaft (24) defining the axis. STATEMENT UNDER ARTICLE 19
The prior art of record fails to teach a device for providing overheating protection which has a tool bore for receipt of a tool for positioning the fitting in the bore of an apparatus, wherein the tool bore is of a radial size larger than the escape port and extends from the axially outer end towards but spaced from the inner end and axially in line with and in communication with the escape port. In addition, the prior art of record fails to teach providing an overheating protection device of the configuration recited in claim 7 in a rotational control apparatus having a cylinder slideably mounting a piston for movement in a first direction by fluid pressure introduced into the cylinder.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP94921220A EP0760910B1 (en) | 1993-06-02 | 1994-06-01 | Overheating protection device for rotational control apparatus |
| KR1019950703875A KR100279346B1 (en) | 1993-06-02 | 1994-06-01 | Overheat prevention device for rotation control means |
| JP50104795A JPH08511080A (en) | 1993-06-02 | 1994-06-01 | Overheat protection device for rotation control equipment |
| DE1994622835 DE69422835T2 (en) | 1993-06-02 | 1994-06-01 | OVERHEATING PROTECTION DEVICE FOR ROTATION CONTROL DEVICE |
| AU72029/94A AU687841C (en) | 1993-06-02 | 1994-06-01 | Overheating protection device for rotational control apparatus |
| AT94921220T ATE189296T1 (en) | 1993-06-02 | 1994-06-01 | OVERHEAT PROTECTION DEVICE FOR ROTATION CONTROL DEVICE |
| BR9405854A BR9405854A (en) | 1993-06-02 | 1994-06-01 | Overheat protection device for a rotational control device |
| CA 2155975 CA2155975C (en) | 1993-06-02 | 1994-06-01 | Overheating protection device for rotational control apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/070,673 | 1993-06-02 | ||
| US08/070,673 US5398794A (en) | 1993-06-02 | 1993-06-02 | Overheating protection device for rotational control apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1994028326A1 WO1994028326A1 (en) | 1994-12-08 |
| WO1994028326B1 true WO1994028326B1 (en) | 1995-01-26 |
Family
ID=34192594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1994/006120 WO1994028326A1 (en) | 1993-06-02 | 1994-06-01 | Overheating protection device for rotational control apparatus |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5398794A (en) |
| EP (1) | EP0760910B1 (en) |
| JP (1) | JPH08511080A (en) |
| KR (1) | KR100279346B1 (en) |
| AT (1) | ATE189296T1 (en) |
| AU (1) | AU687841C (en) |
| BR (1) | BR9405854A (en) |
| CA (1) | CA2155975C (en) |
| DE (1) | DE69422835T2 (en) |
| WO (1) | WO1994028326A1 (en) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5791367A (en) * | 1996-01-25 | 1998-08-11 | Gas Research Institute | Pressure relief device |
| US5765672A (en) * | 1996-08-16 | 1998-06-16 | Horton, Inc. | Overheating protection device for rotational control apparatus |
| DE19713875A1 (en) * | 1997-04-04 | 1998-10-15 | Voith Turbo Kg | Coupling with mechanical torque transmission |
| US6092638A (en) * | 1998-03-05 | 2000-07-25 | Horton, Inc. | Splineless rotational control apparatus |
| US5984070A (en) * | 1998-08-28 | 1999-11-16 | Horton, Inc. | Overheating protection device for rotational control apparatus |
| EP1185799B1 (en) * | 1999-05-17 | 2011-12-07 | Horton Inc. | Rotational control apparatus |
| AT4033U1 (en) * | 1999-12-15 | 2000-12-27 | Leopold Horst Ing | SWITCHING CLUTCH |
| DE10119001B4 (en) * | 2001-04-18 | 2006-04-20 | Desch Antriebstechnik Gmbh & Co. Kg | safety clutch |
| DE10361453B3 (en) * | 2003-12-23 | 2005-09-15 | Voith Turbo Gmbh & Co. Kg | Plug for sealing off working chambers in especially hydrodynamic machines has sealing component comprising sleeve with through-hole in which is fitted bolt, with fusible safety element interconnecting sleeve and bolt |
| DE102004012736A1 (en) * | 2004-03-15 | 2005-10-06 | A. Friedr. Flender Ag | Fuse for a hydrodynamic coupling |
| US7104382B2 (en) * | 2004-10-21 | 2006-09-12 | Kit Masters Inc. | Clutch system |
| US7438169B2 (en) * | 2004-10-21 | 2008-10-21 | Kit Masters Inc. | Clutch system |
| US8100239B2 (en) * | 2008-01-18 | 2012-01-24 | Kit Masters Inc. | Clutch device and methods |
| DE102008031905A1 (en) * | 2008-07-08 | 2010-01-14 | Voith Patent Gmbh | Closure with thermal safety function for a hydrodynamic machine |
| CA2738710C (en) * | 2008-11-12 | 2014-04-22 | Horton, Inc. | Two-speed clutch and retro-fit kit |
| US8109375B2 (en) * | 2009-05-07 | 2012-02-07 | Kit Masters Inc. | Clutch systems and methods |
| BR112012011837A2 (en) * | 2009-11-17 | 2018-09-11 | Horton Inc | integrated viscous clutch |
| US9046137B2 (en) | 2010-01-22 | 2015-06-02 | Kit Masters Inc. | Fan clutch apparatus and methods |
| US8360219B2 (en) | 2010-04-26 | 2013-01-29 | Kit Masters, Inc. | Clutch system and methods |
| MX359132B (en) | 2013-03-14 | 2018-09-17 | Horton Inc | Viscous clutch and associated reservoir configuration. |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US768384A (en) * | 1904-03-29 | 1904-08-23 | Philo J Lockwood | Safety device for boilers. |
| US2172311A (en) * | 1937-07-07 | 1939-09-05 | Phillips Petroleum Co | Valved tap plug |
| US2357620A (en) * | 1941-04-28 | 1944-09-05 | Phillips Petroleum Co | Closure unit for containers |
| US2614396A (en) * | 1947-01-30 | 1952-10-21 | Alfred C Ratermann | Refrigerating system for motor vehicles |
| US2742179A (en) * | 1955-01-21 | 1956-04-17 | Bendix Aviat Corp | Thermal safety plug |
| US3109555A (en) * | 1961-03-29 | 1963-11-05 | Sun Oil Co | Emergency pressure relief device |
| US3253687A (en) * | 1964-10-07 | 1966-05-31 | Horton Mfg Co Inc | Fluid operated clutch |
| GB1093304A (en) * | 1965-09-03 | 1967-11-29 | Fluidrive Eng Co Ltd | Fusible plug assemblies for hydraulic turbo-couplings |
| US3409305A (en) * | 1966-04-12 | 1968-11-05 | Horton Mfg Co Inc | Rotary air seal device |
| US3517683A (en) * | 1968-10-03 | 1970-06-30 | Herman R Chandler | Thermal pressure relief device |
| US3762517A (en) * | 1972-04-03 | 1973-10-02 | Horton Mfg Co Inc | Internal expanding fluid operated clutch for fans |
| JPS5353835A (en) * | 1976-10-26 | 1978-05-16 | Aisin Seiki Co Ltd | Apparatus for controlling clutch of automobiles |
| US4226095A (en) * | 1978-10-19 | 1980-10-07 | Horton Manufacturing Company, Inc. | Mechanism for maintaining contact between the driving side of torque transfering surfaces of a first rotatable member and the driven side of matching torque transfering surfaces of a second rotatable member |
| US4352365A (en) * | 1979-11-01 | 1982-10-05 | The Commonwealth Industrial Gases Limited | Pressure vessel safety valve |
| US4456110A (en) * | 1980-10-11 | 1984-06-26 | Horton Industries, Inc. | Self-contained fan clutch |
| US4423803A (en) * | 1981-11-05 | 1984-01-03 | General Motors Corporation | Torque converter clutch with a temperature regulator valve |
| DE3341795C2 (en) * | 1983-11-19 | 1986-07-10 | Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart | Control valve for a control device of a hydraulic fan drive, in particular for cooling systems in rail vehicles |
| US4589535A (en) * | 1984-09-17 | 1986-05-20 | Allied Corporation | Fan clutch with replaceable plate carrier member |
| US4628953A (en) * | 1985-02-11 | 1986-12-16 | Goodyear Aerospace Corporation | Fusible plug safety device for venting aircraft tires |
| US4877117A (en) * | 1988-08-24 | 1989-10-31 | Horton Industries, Inc. | Rotational control apparatus |
| GB2242715A (en) * | 1990-04-04 | 1991-10-09 | Voith Gmbh J M | Clutch assembly |
-
1993
- 1993-06-02 US US08/070,673 patent/US5398794A/en not_active Expired - Lifetime
-
1994
- 1994-06-01 DE DE1994622835 patent/DE69422835T2/en not_active Expired - Lifetime
- 1994-06-01 KR KR1019950703875A patent/KR100279346B1/en not_active IP Right Cessation
- 1994-06-01 WO PCT/US1994/006120 patent/WO1994028326A1/en active IP Right Grant
- 1994-06-01 AU AU72029/94A patent/AU687841C/en not_active Expired
- 1994-06-01 AT AT94921220T patent/ATE189296T1/en active
- 1994-06-01 CA CA 2155975 patent/CA2155975C/en not_active Expired - Lifetime
- 1994-06-01 JP JP50104795A patent/JPH08511080A/en active Pending
- 1994-06-01 BR BR9405854A patent/BR9405854A/en not_active IP Right Cessation
- 1994-06-01 EP EP94921220A patent/EP0760910B1/en not_active Expired - Lifetime
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