Patents
US 8628440 B2: Inverted tooth chain and sprocket drive system with reduced meshing impact
- Granted
- 2014-01-14
- Filed
- 2009-09-09 application 12556332
- Type
- Utility · 22 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
An inverted tooth chain drive system defines a meshing contact angle Tau (τ) between the tangent line TL and an initial contact reference line that passes through a controlling pin center and the initial contact location. A link plate entrance angle Beta (β) is defined between the initial contact reference line and an inside flank reference line that passes through an arc center of the inside flank radius and the initial contact location. A meshing impact angle Sigma (σ) is defined between the tangent line and the inside flank reference line such that σ=τ+β, wherein β≦9° and σ≦34°. The pressure angle of the sprocket tooth can be adjusted and the chain optimized such that β≦7° and σ≦31°. The system thus provides a reduction of the link impact force FL and the resultant impact energy E. The inverted tooth chain, itself, defines a pitch P and an inside flank projection Lamda (λ) such that 0.007×P≦λ≦0.017×P when said chain is pulled straight. The outside flanks include a chamfer to ensure that initial contact between the chain and sprocket is always on the leading inside flanks of the chain.
Source: PVGPATDIS, file of 2026-04-10 (ipg140114.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Cloyes Gear and Products, Inc. 19 patents | US company or organization | Barling, AR | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| James D. Young | Chesaning, MI | 17 | PVGPATDIS, file of 2026-04-10 | |
| Darren J. Stewart | Howell, MI | 6 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| F16H | Gearing | F16H7/06 | PVGPATDIS, file of 2026-04-10 |
| F16G | Belts, cables, or ropes, predominantly used for driving purposes; chains; fittings predominantly used therefor | F16G13/04 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2026-05-01 | Release of security interest Release of security interest | ELDRIDGE CREDIT ADVISERS, LLC signed 2026-05-01 | MOP-CLOYES, INC. FORT SMITH, AR | 74545/887 | PASDL, file of 2026-10-15 |
| 2022-02-23 | Security interest Security interest Security interest | MOP-CLOYES, INC. signed 2022-02-17 | MARANON CAPITAL, L.P. CHICAGO, IL | 59080/275 | ECORSEXC, file of 2026-09-25 |
| 2022-02-18 | Name change Change of name | HH-CLOYES, INC. signed 2022-02-17 | MOP-CLOYES, INC. FORT SMITH, AR | 59313/774 | ECORSEXC, file of 2026-09-25 |
| 2022-02-18 | Release of security interest Release of security interest | LBC CREDIT AGENCY SERVICES, LLC, AS AGENT signed 2022-02-17 | HH-CLOYES, INC. FORT SMITH, AR | 59232/1 | ECORSEXC, file of 2026-09-25 |
| 2018-07-09 | Assignment Assignment of assignor's interest | CLOYES GEAR AND PRODUCTS, INC. signed 2018-04-04 | HH-CLOYES, INC. FORT LAUDERDALE, FL | 47254/45 | ECORSEXC, file of 2026-09-25 |
| 2018-06-21 | Security interest Security interest Security interest | HH-CLOYES, INC. signed 2018-04-04 | LBC CREDIT AGENCY SERVICES, LLC, AS AGENT PHILADELPHIA, PA | 46410/539 | ECORSEXC, file of 2026-09-25 |
| 2018-04-05 | Release of security interest Release of security interest | JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT signed 2018-04-04 | CLOYES GEAR AND PRODUCTS, INC. FORT SMITH, AR | 45845/469 | ECORSEXC, file of 2026-09-25 |
| 2017-06-08 | Security interest Security interest Security interest | AMERICAN AXLE & MANUFACTURING, INC. signed 2017-06-05 CLOYES GEAR AND PRODUCTS, INC. signed 2017-06-05 GREDE II LLC signed 2017-06-05 GREDE LLC signed 2017-06-05 METALDYNE BSM, LLC signed 2017-06-05 METALDYNE, LLC signed 2017-06-05 MSP INDUSTRIES CORPORATION signed 2017-06-05 | JPMORGAN CHASE BANK, N.A., AS COLLATERAL AGENT BROOKLYN, NY | 42734/1 | ECORSEXC, file of 2026-09-25 |
| 2017-04-06 | Release of security interest Release of security interest in patents recorded at r/f 034024/0217 | GOLDMAN SACHS BANK USA, AS AGENT signed 2017-04-06 | CLOYES GEAR AND PRODUCTS, INC. FORT SMITH, AR | 42178/504 | ECORSEXC, file of 2026-09-25 |
| 2014-10-21 | Release of security interest Release of security interest in patents (release of 029087/0140) | GOLDMAN SACHS BANK USA signed 2014-10-20 | CLOYES GEAR AND PRODUCTS, INC. FORT SMITH, AR | 34029/635 | ECORSEXC, file of 2026-09-25 |
| 2014-10-20 | Security interest Security interest Patent security agreement | CLOYES GEAR AND PRODUCTS, INC. signed 2014-10-20 | GOLDMAN SACHS BANK USA, AS COLLATERAL AGENT NEW YORK, NY | 34024/217 | ECORSEXC, file of 2026-09-25 |
| 2013-02-14 | Release of security interest Termination of security interest reel/frame 025998/0965 and 028863/0964 | BANK OF AMERICA, N.A. signed 2012-10-05 | CLOYES GEAR AND PRODUCTS, INC. FORT SMITH, AR | 29816/396 | ECORSEXC, file of 2026-09-25 |
| 2012-10-08 | Release of security interest Termination of security interest | BANK OF AMERICA, N.A., signed 2012-10-05 | CLOYES GEAR AND PRODUCTS, INC., FORT SMITH, AR | 29088/944 | ECORSEXC, file of 2026-09-25 |
| 2012-10-05 | Security interest Security interest Security agreement | CLOYES GEAR AND PRODUCTS, INC. signed 2012-10-05 | GOLDMAN SACHS BANK USA, AS COLLATERAL AGENT NEW YORK, NY | 29087/140 | ECORSEXC, file of 2026-09-25 |
| 2012-08-28 | Security interest Security interest Security agreement | CLOYES GEAR AND PRODUCTS, INC. signed 2012-08-24 | BANK OF AMERICA, N.A., AS AGENT CHICAGO, IL | 28863/910 | ECORSEXC, file of 2026-09-25 |
| 2011-03-22 | Security interest Security interest Security agreement | CLOYES GEAR AND PRODUCTS, INC. signed 2011-03-21 | BANK OF AMERICA, N.A., AS COLLATERAL AGENT SAN FRANCISCO, CA | 25998/965 | ECORSEXC, file of 2026-09-25 |
| 2009-11-23 | Assignment Assignment of assignor's interest | STEWART, DARREN J. signed 2009-09-10 YOUNG, JAMES D. signed 2009-09-10 | CLOYES GEAR AND PRODUCTS, INC. FORT SMITH, AR | 23555/443 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.