US4801288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railroad hand brake chain link stripper
Assignee: Sloan Valve Co
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Filing: 1987-09-16
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Granted: 1989-01-31
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Expires: 2007-09-16
Abstract
Abstract A railroad car hand brake has a housing with a chain opening in said housing. There is a shaft mounted in the housing which mounts a chain drum which is rotated by a drive gear. The drum is formed and adapted to engage a link chain whereby turning of the drum moves the chain inwardly through the housing opening, around the drum and then outwardly through the housing opening. A chain stripper is attached to the housing and has a portion thereof positioned between the incoming and outgoing chain, in alignment with and extending toward the drum to prevent the chain from wrapping around the drum.
Inventors
- 👤 Eugene W. Schmitt
- 👤 Richard L. Cotterell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:36
CPC Classifications
B; B61; B61H; B61H13/00; B61H13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
In a railroad car hand brake, a housing, a chain opening in said housing, a shaft mounted in said housing, a chain drum positioned within said housing and mounted on said shaft, said drum having a plurality of circumferentially spaced pockets, each formed and adapted to receive a chain link, each of said pockets being connected with adjacent pockets by a circumferentially extending slot, means engaged with and for causing rotation of said drum whereby turning of said drum moves said chain inwardly through said opening, around said drum, and outwardly through said opening, and a chain stripper having a pair of diverging legs attached to said housing and a generally U-shaped portion joining said legs and extending toward said drum, and a chain stripper portion, attached to said generally U-shaped portion, in alignment with said pockets and extending inside of the outer periphery of said drum, said chain stripper portion further extending into said slots and pockets to prevent the chain from wrapping around said drum.
Claim 2
Dependent Claim
167 words
In a railroad car hand brake, a housing, a chain opening in said housing, a shaft mounted in said housing, a chain drum positioned within said housing and mounted on said shaft, said drum having a plurality of circumferentially spaced pockets, each formed and adapted to receive a chain link, each of said pockets being connected with adjacent pockets by a circumferentially extending slot, means engaged with and for causing rotation of said drum whereby turning of said drum moves said chain inwardly through said opening, around said drum, and outwardly through said opening, and a chain stripper having a pair of diverging legs attached to said housing and a generally U-shaped portion joining said legs and extending toward said drum, and a chain stripper portion, attached to said generally U-shaped portion, in alignment with said pockets and extending inside of the outer periphery of said drum, said chain stripper portion further extending into said slots and pockets to prevent the chain from wrapping around said drum.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |