Patent US3713186A successfully refreshed from Google Patents.
US3713186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel stake
Assignee: Stewart Warner Corp
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Filing: 1971-03-12
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Granted: 1973-01-30
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Expires: 1991-03-12
Abstract
Abstract The following specification describes a two-wheeled caster in which the shaft rotatably supporting the caster wheels at opposite ends has a head at each end of smaller diameter than the shaft with a peripheral groove between each head and the adjacent main portion of the shaft to define a shoulder. The shaft engages in a correspondingly sized recess in each caster wheel with each recess terminating in a small diameter recess for receiving the respective shaft head. A thin wall section located between each small diameter caster recess and the adjacent shaft receiving recess is deformed into the groove to rotatably secure the shaft to each caster wheel.
Inventors
- 👤 R Cartwright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:10
CPC Classifications
B; B60; B60B; B60B33/00; B60B33/0036; B60B33/0042; B60B33/0028
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
194 words
A caster comprising a pair of metal wheels each having an axial recess of one diameter terminating in an axial recess of smaller diameter, a metal shaft corresponding in diameter to said one diameter recess for receipt in each one diameter recess to rotatably support said wheels and having a head on each shaft end of a diameter corresponding to each smaller diameter recess for rotatably engaging a respective wheel smaller diameter recess, a radial surface of larger diameter than said head intermediate each said head and the adjacent shaft portion, said shaft having a peripheral groove intermediate said head and radial surface, and an axially projecting peripheral lip integrally formed on each said wheel intermediate the respective recesses for engagement with a respective shaft radial surface to permanently deform a respective wheel lip into a respective shaft groove in response to axial pressure of the respective radial surface against a respective lip to thereafter prevent axial separation of said shaft and wheels, each lip having an inner diameter corresponding to the respective wheel diameter recess and an outer diameter of increasing radial dimension in an axial direction extending toward said smaller diameter recess.
Claim 2
Dependent Claim
194 words
A caster comprising a pair of metal wheels each having an axial recess of one diameter terminating in an axial recess of smaller diameter, a metal shaft corresponding in diameter to said one diameter recess for receipt in each one diameter recess to rotatably support said wheels and having a head on each shaft end of a diameter corresponding to each smaller diameter recess for rotatably engaging a respective wheel smaller diameter recess, a radial surface of larger diameter than said head intermediate each said head and the adjacent shaft portion, said shaft having a peripheral groove intermediate said head and radial surface, and an axially projecting peripheral lip integrally formed on each said wheel intermediate the respective recesses for engagement with a respective shaft radial surface to permanently deform a respective wheel lip into a respective shaft groove in response to axial pressure of the respective radial surface against a respective lip to thereafter prevent axial separation of said shaft and wheels, each lip having an inner diameter corresponding to the respective wheel diameter recess and an outer diameter of increasing radial dimension in an axial direction extending toward said smaller diameter recess.
Claim 3
Dependent Claim
194 words
A caster comprising a pair of metal wheels each having an axial recess of one diameter terminating in an axial recess of smaller diameter, a metal shaft corresponding in diameter to said one diameter recess for receipt in each one diameter recess to rotatably support said wheels and having a head on each shaft end of a diameter corresponding to each smaller diameter recess for rotatably engaging a respective wheel smaller diameter recess, a radial surface of larger diameter than said head intermediate each said head and the adjacent shaft portion, said shaft having a peripheral groove intermediate said head and radial surface, and an axially projecting peripheral lip integrally formed on each said wheel intermediate the respective recesses for engagement with a respective shaft radial surface to permanently deform a respective wheel lip into a respective shaft groove in response to axial pressure of the respective radial surface against a respective lip to thereafter prevent axial separation of said shaft and wheels, each lip having an inner diameter corresponding to the respective wheel diameter recess and an outer diameter of increasing radial dimension in an axial direction extending toward said smaller diameter recess.
Claim 4
Dependent Claim
194 words
A caster comprising a pair of metal wheels each having an axial recess of one diameter terminating in an axial recess of smaller diameter, a metal shaft corresponding in diameter to said one diameter recess for receipt in each one diameter recess to rotatably support said wheels and having a head on each shaft end of a diameter corresponding to each smaller diameter recess for rotatably engaging a respective wheel smaller diameter recess, a radial surface of larger diameter than said head intermediate each said head and the adjacent shaft portion, said shaft having a peripheral groove intermediate said head and radial surface, and an axially projecting peripheral lip integrally formed on each said wheel intermediate the respective recesses for engagement with a respective shaft radial surface to permanently deform a respective wheel lip into a respective shaft groove in response to axial pressure of the respective radial surface against a respective lip to thereafter prevent axial separation of said shaft and wheels, each lip having an inner diameter corresponding to the respective wheel diameter recess and an outer diameter of increasing radial dimension in an axial direction extending toward said smaller diameter recess.
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |