WO2001054843A1 - Sheet metal combination pulley - Google Patents

Sheet metal combination pulley Download PDF

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Publication number
WO2001054843A1
WO2001054843A1 PCT/US2001/000178 US0100178W WO0154843A1 WO 2001054843 A1 WO2001054843 A1 WO 2001054843A1 US 0100178 W US0100178 W US 0100178W WO 0154843 A1 WO0154843 A1 WO 0154843A1
Authority
WO
WIPO (PCT)
Prior art keywords
pulley
section
radius
cup
sheet metal
Prior art date
Application number
PCT/US2001/000178
Other languages
French (fr)
Inventor
Yahya Hodjat
Michael H. Kutzscher
Original Assignee
The Gates Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by The Gates Corporation filed Critical The Gates Corporation
Priority to AU2001226265A priority Critical patent/AU2001226265A1/en
Publication of WO2001054843A1 publication Critical patent/WO2001054843A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • B21D53/261—Making other particular articles wheels or the like pulleys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • F16H55/44—Sheet-metal pulleys

Definitions

  • the invention relates to pulleys, and more particularly, to stamped and spun sheet metal pulleys for trucks.
  • Prior art pulleys are generally cast as a single piece to meet the strength requirements for truck service. Casting results in a relatively heavy and expensive pulley. Examples of prior art metal pulleys include US patent 3,962,926 to Kotlar and US patent 3,945, 102 to Kotlar.
  • What is needed is a sheet metal combination truck pulley having stamped and spun sheet metal sections assembled to form a combination pulley. What is needed is a sheet metal combination truck pulley having a wide flange under each belt surface. What is needed is a sheet metal combination truck pulley having a spun metal belt surface. What is needed is a sheet metal combination truck pulley that is relatively light weight. The present invention meets these needs.
  • the primary aspect of the invention is to provide a sheet metal combination pulley having stamped and spun sheet metal sections assembled to form a combination pulley.
  • Another aspect of the invention is to provide a sheet metal combination pulley having a wide flange under each belt surface. Another aspect of the invention is to provide a sheet metal combination pulley having a spun metal belt surface. Another aspect of the invention is to provide a sheet metal combination pulley that is relatively light weight.
  • the invention comprises a multiple piece sheet metal pulley having a split metal (center web) design. Pulley sections are stamped out of sheet metal. The belt bearing surface is then spun onto the flat outer edge of each stamped pulley section. A wide flange extends beneath each belt bearing section. The wide flange stiffens the pulley thereby reducing the deforming effects of the over hanging, off-center load caused by the belt on each pulley. A support cup is also stamped out of sheet metal. The pulleys are pressed together concentrically with an interference fit. The support cup is concentrically pressed into the assembled pulleys with an interference fit to further stiffen and reinforce the pulley assembly. The pulley may comprise from two to several pulley sections that are concentrically assembled.
  • Fig. 1 is a side cross-section view of the invention.
  • Fig. 2 is a side cross-section view of a first pulley section.
  • Fig. 3 is a side cross-section view of a support cup.
  • Fig. 4 is a side cross-section view of a second pulley section.
  • Fig. 5 is a top perspective view of the preferred embodiment of the combination pulley.
  • Fig. 6 is a cross sectional view of the split metal pulley profile.
  • Fig. 7 is a cross-sectional view of the multi-ribbed pulley profile.
  • Fig. 1 is a side cross-section view of the invention.
  • Pulley assembly 10 comprises first pulley section 20.
  • First pulley section 20 further comprises web section 25, cup section 21, outer flange 22 and belt bearing section 23.
  • Cup section 21 has inner surface 26.
  • Second pulley section 30 comprises web section 31 , cup section 32, outer flange 33 and belt bearing section 34.
  • Cup section 32 has inner surface 36 and outer surface 35.
  • Support cup 40 comprises web section 41 and flange 42. Flange section 42 as outer surface 43.
  • First pulley section 20 is stamped and trimmed by means known in the art. First pulley section 20 is formed such that it has a radius Ri to the inner surface 26 of cup section 21.
  • Second pulley section 30 is stamped and trimmed by means known in the art. Second pulley section 30 is formed such that it has a radius R 4 to the inner surface 36 of cup section 32. Radius R 2 , to the outer surface 35 of cup section 32, is slightly larger than radius R-i, thereby creating an interference fit between first pulley section 20 and second pulley section 30 upon assembly.
  • Support cup 40 is stamped and trimmed by means known in the art.
  • Support cup 40 is formed such that a radius R 3 to an outer surface 43 of flange 42 is slightly larger than radius R 2 so that an interference fit is achieved between second pulley section 30 and support cup 40.
  • web section 25 is in contact with web section 31 , which is in contact with support cup 40.
  • the complete assembly is drilled with a hole 24 for receiving a shaft, such as the end of a crankshaft for an engine assembly drive.
  • a plurality of holes may also be drilled to accommodate a hub having multiple bolts.
  • Fig. 2 is a side cross-section view of a first pulley section.
  • First pulley section 20 is stamped and trimmed by means known in the art.
  • First pulley section 20 is formed such that it has a radius Ri to the inner surface 26 of cup section 21.
  • a height hi of outer flange 22 is at least 25% of a maximum radius of the pulley web section 25.
  • Fig. 3 is a side cross-section view of a support cup.
  • Support cup 40 is stamped and trimmed by means known in the art.
  • Support cup 40 is formed such that a radius R 3 to an outer surface 43 of flange 42 is slightly larger than radius R 2 so that a pressed interference fit is achieved between second pulley section 30 and support cup 40.
  • Fig. 4 is a side cross-section view of a second pulley section.
  • Second pulley section 30 is stamped and trimmed by means known in the art. Second pulley section 30 is formed such that it has a radius R 2 to the inner surface 36 of cup section 32.
  • Radius R 2 is such that the outer surface 35 of cup section 32 is slightly larger than radius R 1 ( thereby creating a pressed interference fit between first pulley section 20 and second pulley section 30.
  • a height h2 of outer flange 33 is at least 25% of a maximum radius of the pulley web section 31.
  • Fig. 5 is a top perspective view of the preferred embodiment of the combination pulley.
  • Support cup 40 is shown engaged with second pulley section 30.
  • First pulley section 20 is shown engaged with second pulley section 30.
  • Method Manufacture of the invention begins with the second pulley section 30 being pressed with outer flange 33.
  • Outer flange 33 has a flat edge as a result of the pressing process.
  • the flat edge is then trimmed to a desired radius.
  • the flat edge is then spun into the desired belt bearing section shape. This may be accomplished, for example, by known metal forming processes.
  • a split metal process may be used whereby the flat edge is split.60 and then metal formed into the desired profile, see Fig. 6.
  • the example depicted in this description is for a multi-ribbed belt profile 23, see Fig. 7, although the belt bearing section can be spun into any desired profile, for example, for use with a v belt.
  • a synchronous belt profile may also be cut into the belt bearing surface using methods known in the art.
  • first pulley section 20 is pressed with outer flange 22.
  • Outer flange 22 has a flat edge as a result of the pressing process.
  • the flat edge is then trimmed to a desired radius.
  • the flat edge is then spun into the desired belt bearing section shape.
  • a split metal process may be used whereby the flat edge is first split and then formed into the desired profile as described above.
  • the example depicted in this description is for a multi-ribbed belt profile, although the belt bearing section can be spun into any desired profile, for example, for a v belt.
  • the support cup 40 is pressed into the desired shape and trimmed as desired by metal pressing process. As described above, all parts are made with the necessary dimensional precision to assure they can be press fit into each other for an interference fit. Support cup 40 is also made wherein outer surface 43 has a slight taper to assure the proper interference or press fit between the parts. Second pulley section 30 may also have a slight outward taper to enhance the proper interference or pre-load fit between the first pulley section and the second pulley section.
  • the preferred final assembly method comprises concentrically pressing the second pulley section 30 into the first pulley section 20. Then support cup 40 is pressed into the second pulley section 30. The three parts are then riveted to prevent relative movement of the pulley sections during operation. A central hole is then stamped or drilled to receive a shaft. Other additional holes maybe bored or punched into the pulley web after final assembly in order to accommodate various hub bolt arrangements.
  • the invention comprises a multiple piece sheet metal pulley having a split metal (center web) design. Pulley sections are stamped out of sheet metal. The belt bearing surface is then spun onto the flat outer edge of each stamped pulley section. A wide flange extends beneath each belt bearing section. The wide flange stiffens the pulley thereby reducing the deforming effects of the over hanging, off-center load caused by the belt on each pulley. A support cup is also stamped out of sheet metal. The pulleys are pressed together concentrically with an interference fit. The support cup is concentrically pressed into the assembled pulleys with an interference fit to further stiffen and reinforce the pulley assembly.
  • the pulley may comprise from two to several pulley sections that are concentrically assembled.

Abstract

The invention comprises a multiple piece sheet metal pulley (10) having a split metal (center web) design. Pulley sections (20, 30) are stamped out of sheet metal. The belt bearing surface (23, 34) is then spun onto the flat outer edge of each stamped pulley section. A wide flange (22, 23) extends beneath each belt bearing section. The wide flange stiffens the pulley thereby reducing the deforming effects of the over hanging, off-center load caused by the belt on each pulley. A support cup (40) is also stamped out of the sheet metal. The pulleys are pressed together concentrically with an interference fit. The support cup is concentrically pressed into the assembled pulleys (20, 30) with an interference fit to further stiffen and reinforce the pulley assembly. The pulley may comprise from two to several pulley sections that are concentrically assembled.

Description

Title Sheet Metal Combination Pulley
Field of the Invention
The invention relates to pulleys, and more particularly, to stamped and spun sheet metal pulleys for trucks.
Background of the Invention In the automotive industry there has been a great need for inexpensive light-weight durable pulleys having a long service life under severe conditions, particularly for use in truck service. Prior art pulleys are generally cast as a single piece to meet the strength requirements for truck service. Casting results in a relatively heavy and expensive pulley. Examples of prior art metal pulleys include US patent 3,962,926 to Kotlar and US patent 3,945, 102 to Kotlar.
What is needed is a sheet metal combination truck pulley having stamped and spun sheet metal sections assembled to form a combination pulley. What is needed is a sheet metal combination truck pulley having a wide flange under each belt surface. What is needed is a sheet metal combination truck pulley having a spun metal belt surface. What is needed is a sheet metal combination truck pulley that is relatively light weight. The present invention meets these needs.
Summary of the Invention The primary aspect of the invention is to provide a sheet metal combination pulley having stamped and spun sheet metal sections assembled to form a combination pulley.
Another aspect of the invention is to provide a sheet metal combination pulley having a wide flange under each belt surface. Another aspect of the invention is to provide a sheet metal combination pulley having a spun metal belt surface. Another aspect of the invention is to provide a sheet metal combination pulley that is relatively light weight.
Other aspects of the invention will be pointed out or made apparent by the following description of the invention and the accompanying drawings. The invention comprises a multiple piece sheet metal pulley having a split metal (center web) design. Pulley sections are stamped out of sheet metal. The belt bearing surface is then spun onto the flat outer edge of each stamped pulley section. A wide flange extends beneath each belt bearing section. The wide flange stiffens the pulley thereby reducing the deforming effects of the over hanging, off-center load caused by the belt on each pulley. A support cup is also stamped out of sheet metal. The pulleys are pressed together concentrically with an interference fit. The support cup is concentrically pressed into the assembled pulleys with an interference fit to further stiffen and reinforce the pulley assembly. The pulley may comprise from two to several pulley sections that are concentrically assembled.
Brief Description of the Drawings
Fig. 1 is a side cross-section view of the invention.
Fig. 2 is a side cross-section view of a first pulley section. Fig. 3 is a side cross-section view of a support cup.
Fig. 4 is a side cross-section view of a second pulley section.
Fig. 5 is a top perspective view of the preferred embodiment of the combination pulley.
Fig. 6 is a cross sectional view of the split metal pulley profile. Fig. 7 is a cross-sectional view of the multi-ribbed pulley profile.
Detailed Description of the Preferred Embodiment
Fig. 1 is a side cross-section view of the invention. Pulley assembly 10 comprises first pulley section 20. First pulley section 20 further comprises web section 25, cup section 21, outer flange 22 and belt bearing section 23. Cup section 21 has inner surface 26. Second pulley section 30 comprises web section 31 , cup section 32, outer flange 33 and belt bearing section 34. Cup section 32 has inner surface 36 and outer surface 35. Support cup 40 comprises web section 41 and flange 42. Flange section 42 as outer surface 43.
First pulley section 20 is stamped and trimmed by means known in the art. First pulley section 20 is formed such that it has a radius Ri to the inner surface 26 of cup section 21.
Second pulley section 30 is stamped and trimmed by means known in the art. Second pulley section 30 is formed such that it has a radius R4 to the inner surface 36 of cup section 32. Radius R2, to the outer surface 35 of cup section 32, is slightly larger than radius R-i, thereby creating an interference fit between first pulley section 20 and second pulley section 30 upon assembly.
Support cup 40 is stamped and trimmed by means known in the art. Support cup 40 is formed such that a radius R3 to an outer surface 43 of flange 42 is slightly larger than radius R2 so that an interference fit is achieved between second pulley section 30 and support cup 40.
Once the pulley is assembled, web section 25 is in contact with web section 31 , which is in contact with support cup 40. The complete assembly is drilled with a hole 24 for receiving a shaft, such as the end of a crankshaft for an engine assembly drive. A plurality of holes may also be drilled to accommodate a hub having multiple bolts.
Fig. 2 is a side cross-section view of a first pulley section. First pulley section 20 is stamped and trimmed by means known in the art. First pulley section 20 is formed such that it has a radius Ri to the inner surface 26 of cup section 21. A height hi of outer flange 22 is at least 25% of a maximum radius of the pulley web section 25.
Fig. 3 is a side cross-section view of a support cup. Support cup 40 is stamped and trimmed by means known in the art. Support cup 40 is formed such that a radius R3 to an outer surface 43 of flange 42 is slightly larger than radius R2 so that a pressed interference fit is achieved between second pulley section 30 and support cup 40. Fig. 4 is a side cross-section view of a second pulley section. Second pulley section 30 is stamped and trimmed by means known in the art. Second pulley section 30 is formed such that it has a radius R2 to the inner surface 36 of cup section 32. Radius R2 is such that the outer surface 35 of cup section 32 is slightly larger than radius R1 ( thereby creating a pressed interference fit between first pulley section 20 and second pulley section 30. A height h2 of outer flange 33 is at least 25% of a maximum radius of the pulley web section 31.
Fig. 5 is a top perspective view of the preferred embodiment of the combination pulley. Support cup 40 is shown engaged with second pulley section 30. First pulley section 20 is shown engaged with second pulley section 30.
Method Manufacture of the invention begins with the second pulley section 30 being pressed with outer flange 33. Outer flange 33 has a flat edge as a result of the pressing process. The flat edge is then trimmed to a desired radius. The flat edge is then spun into the desired belt bearing section shape. This may be accomplished, for example, by known metal forming processes. In the alternative, a split metal process may be used whereby the flat edge is split.60 and then metal formed into the desired profile, see Fig. 6. The example depicted in this description is for a multi-ribbed belt profile 23, see Fig. 7, although the belt bearing section can be spun into any desired profile, for example, for use with a v belt. A synchronous belt profile may also be cut into the belt bearing surface using methods known in the art.
The same process is then used to manufacture the first pulley section 20. First pulley section 20 is pressed with outer flange 22. Outer flange 22 has a flat edge as a result of the pressing process. The flat edge is then trimmed to a desired radius. The flat edge is then spun into the desired belt bearing section shape. In the alternative, a split metal process may be used whereby the flat edge is first split and then formed into the desired profile as described above. The example depicted in this description is for a multi-ribbed belt profile, although the belt bearing section can be spun into any desired profile, for example, for a v belt.
The support cup 40 is pressed into the desired shape and trimmed as desired by metal pressing process. As described above, all parts are made with the necessary dimensional precision to assure they can be press fit into each other for an interference fit. Support cup 40 is also made wherein outer surface 43 has a slight taper to assure the proper interference or press fit between the parts. Second pulley section 30 may also have a slight outward taper to enhance the proper interference or pre-load fit between the first pulley section and the second pulley section.
The preferred final assembly method comprises concentrically pressing the second pulley section 30 into the first pulley section 20. Then support cup 40 is pressed into the second pulley section 30. The three parts are then riveted to prevent relative movement of the pulley sections during operation. A central hole is then stamped or drilled to receive a shaft. Other additional holes maybe bored or punched into the pulley web after final assembly in order to accommodate various hub bolt arrangements.
The sequence and method as described is not limiting and the order may be changed to accommodate the assembly needs of a user. Further, the number of support cups and pulleys may be increased or decreased in order to accommodate the needs of a user. For example, three or four pulleys may be used with a single or double support cup, depending upon the belt load for the pulley. Although a single form of the invention has been described herein, it will be obvious to those skilled in the art that variations may be made in the construction and relation of parts without departing from the spirit and scope of the invention described herein. Abstract
The invention comprises a multiple piece sheet metal pulley having a split metal (center web) design. Pulley sections are stamped out of sheet metal. The belt bearing surface is then spun onto the flat outer edge of each stamped pulley section. A wide flange extends beneath each belt bearing section. The wide flange stiffens the pulley thereby reducing the deforming effects of the over hanging, off-center load caused by the belt on each pulley. A support cup is also stamped out of sheet metal. The pulleys are pressed together concentrically with an interference fit. The support cup is concentrically pressed into the assembled pulleys with an interference fit to further stiffen and reinforce the pulley assembly.
The pulley may comprise from two to several pulley sections that are concentrically assembled.

Claims

Claims We claim: 1. A sheet metal combination pulley comprising: a first pulley having a web section arranged normal to a centerline, a cup section having an inner surface and arranged normal to the web section and an outer flange arranged normal to the cup section and extending radially outward from the cup section, the cup section inner surface having a radius RL and the outer flange having a belt bearing section; a second pulley having a web section arranged normal to a centerline, a cup section having an outer surface and an inner surface and arranged normal to the web section and an outer flange arranged normal to the cup section and extending radially outward from the cup section, the cup section outer surface having a radius R2 and the inner surface having a radius R4, and the outer flange having a belt bearing section; a support cup having a web section arranged normal to a centerline and a flange having an outer surface and arranged normal to the web section extending in a longitudinal direction, the flange outer surface having a radius R3; the second pulley outer surface concentrically engaged with the first pulley inner surface; and the support cup outer surface concentrically engaged with the second pulley inner surface.
2. The sheet metal combination pulley as in claim 1 , wherein: radius R2 is slightly greater than radius Ri; and radius R3 is slightly greater than radius R4.
3. The sheet metal combination pulley as in claim 2,wherein: the first pulley outer flange has a length at least 25% of a maximum radius of the first pulley web section; and the second pulley outer flange has a length at least 25% of a maximum radius of the first pulley web section.
4. The sheet metal combination pulley as in claim 3, wherein: the first pulley belt bearing surface further describes a multi-ribbed profile; and the second pulley belt bearing surface further describes a multi-ribbed profile.
5. The sheet metal combination pulley as in claim 3, wherein: the first pulley belt bearing surface further describes a cogged profile; and the second pulley belt bearing surface further describes a cogged profile.
6. The sheet metal combination pulley as in claim 3, wherein: the first pulley belt bearing surface further describes a v belt profile; and the second pulley belt bearing surface further describes a v belt profile.
7. A method of producing a sheet metal combination pulley comprising the steps of: stamping a first pulley having a web section arranged normal to a centerline, a cup section having an inner surface and arranged normal to the web section and an outer flange arranged normal to the cup section and extending radially outward from the cup section, the cup section inner surface having a radius Ri, and a belt bearing section connected to the outer flange; stamping a second pulley having a web section arranged normal to a centerline, a cup section having an outer surface and an inner surface and arranged normal to the web section and an outer flange arranged normal to the cup section and extending radially outward from the cup section, , the cup section outer surface having a radius R2 and the inner surface having a radius R4, and a belt bearing section connected to the outer flange; stamping a support cup having a web section arranged normal to a centerline and a flange having an outer surface and arranged normal to the web section extending in a longitudinal direction, the flange outer surface having a radius R3; pressing the second pulley into the first pulley such that the second pulley . outer surface is concentrically engaged with the first pulley inner surface; and pressing the support cup into the second pulley such that the support cup outer surface is concentrically engaged with the second pulley inner surface.
8. The method of producing a sheet metal combination pulley as in claim 7, wherein: radius R2 is slightly greater than radius Ri; and radius R3 is slightly greater than radius R4.
9. The method of producing a sheet metal combination pulley as in claim 8, wherein: the first pulley outer flange has a length at least 25% of a maximum radius of the first pulley web section; and the second pulley outer flange has a length at least 25% of a maximum radius of the first pulley web section.
10. The method of producing a sheet metal combination pulley as in claim 9, wherein: the first pulley belt bearing surface further describes a multi-ribbed profile; and the second pulley belt bearing surface further describes a multi-ribbed profile.
11. The method of producing a sheet metal combination pulley as in claim 9, wherein: the first pulley belt bearing surface further describes a cogged profile; and the second pulley belt bearing surface further describes a cogged profile.
12. The method of producing a sheet metal combination pulley as in claim 9, wherein: the first pulley belt bearing surface further describes a v belt profile; and the second pulley belt bearing surface further describes a v belt profile.
13. A sheet metal combination pulley comprising: a pulley having a web section arranged normal to a centerline, a cup section having an inner surface and arranged normal to the web section and an outer flange arranged normal to the cup section and extending radially outward from the cup section, and a belt bearing section formed in the outer flange, the cup section inner surface having a radius Ri; a support cup having a web section arranged normal to a centerline and a flange having an outer surface and arranged normal to the web section extending in a longitudinal direction, the flange outer surface having a radius R3; radius R3 is slightly greater than radius R^ and the flange outer surface concentrically engaged with the pulley inner surface.
14. The sheet metal combination pulley as in claim 13,wherein: the pulley outer flange has a length at least 25% of a maximum radius of the first pulley web section.
15. The sheet metal combination pulley as in claim 14, wherein: the pulley belt bearing surface further describes a multi-ribbed profile.
16. The sheet metal combination pulley as in claim 14, wherein: the pulley belt bearing surface further describes a cogged profile.
17. The sheet metal combination pulley as in claim 14, wherein: the pulley belt bearing surface further describes a v belt profile.
18. A sheet metal combination pulley comprising: a plurality of pulleys, each having a web section arranged normal to a centerline, a cup section having an inner surface and an outer surface and arranged normal to the web section and an outer flange arranged normal to the cup section and extending radially outward from the cup section, and a belt bearing section connected to the outer flange, the cup section inner surface having a radius and the cup section outer surface having a radius; each of the plurality of pulleys concentrically engaged, and wherein the radius of a cup section outer surface is slightly greater than the radius of the adjacent concentrically engaged cup section inner surface; and a support cup having a web section arranged normal to a centerline and a flange having an outer surface and arranged normal to the web section extending in a longitudinal direction, the flange outer surface having a radius that is slightly greater than the smallest cup section inner radius, the support cup concentrically engaged with the smallest pulley cup section inner surface.
19. The sheet metal combination pulley as in claim 18,wherein: the pulley outer flange has a length at least 25% of a maximum radius of the first pulley web section.
20. The sheet metal combination pulley as in claim 19, wherein: the pulley belt bearing surface further describes a multi-ribbed profile.
PCT/US2001/000178 2000-01-31 2001-01-03 Sheet metal combination pulley WO2001054843A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001226265A AU2001226265A1 (en) 2000-01-31 2001-01-03 Sheet metal combination pulley

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US49473500A 2000-01-31 2000-01-31
US09/494,735 2000-01-31

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Publication Number Publication Date
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2388158B (en) * 2002-05-02 2006-03-01 Arvinmeritor Light Vehicle Sys Door component, pulley and method of fitting a pulley
US8168139B2 (en) 2002-06-24 2012-05-01 Fluidigm Corporation Recirculating fluidic network and methods for using the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1700416A (en) * 1927-08-12 1929-01-29 Spun Steel Corp Pulley
US2875625A (en) * 1956-02-15 1959-03-03 Nagel Chase Mfg Co Flat belt pulley
US3962926A (en) * 1975-02-03 1976-06-15 Kotlar Edward A Stamped sheet metal pulley
DE2655909A1 (en) * 1976-12-09 1978-06-15 Bayerische Motoren Werke Ag TIMING BELT PULLEY MADE OF DEFORMED SHEET METAL
FR2429940A1 (en) * 1978-06-30 1980-01-25 Borg Warner Ltd Sprocket formed from sheet metal - has splined hub and toothed outer portion joined by integral flange and annular disc forming additional flange

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1700416A (en) * 1927-08-12 1929-01-29 Spun Steel Corp Pulley
US2875625A (en) * 1956-02-15 1959-03-03 Nagel Chase Mfg Co Flat belt pulley
US3962926A (en) * 1975-02-03 1976-06-15 Kotlar Edward A Stamped sheet metal pulley
DE2655909A1 (en) * 1976-12-09 1978-06-15 Bayerische Motoren Werke Ag TIMING BELT PULLEY MADE OF DEFORMED SHEET METAL
FR2429940A1 (en) * 1978-06-30 1980-01-25 Borg Warner Ltd Sprocket formed from sheet metal - has splined hub and toothed outer portion joined by integral flange and annular disc forming additional flange

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2388158B (en) * 2002-05-02 2006-03-01 Arvinmeritor Light Vehicle Sys Door component, pulley and method of fitting a pulley
US8168139B2 (en) 2002-06-24 2012-05-01 Fluidigm Corporation Recirculating fluidic network and methods for using the same
US8883092B2 (en) 2002-06-24 2014-11-11 Fluidigm Corporation Recirculating fluidic network and methods for using the same
US9506914B2 (en) 2002-06-24 2016-11-29 Fluidigm Corporation Recirculating fluidic network and methods for using the same

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