US4024601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Housing for castors having twin rollers
Assignee: KEVI AS
•
Filing: 1976-02-04
•
Granted: 1977-05-24
•
Expires: 1996-02-04
Abstract
Abstract A housing for twin roller castors is described having a cover for the rollers in one piece with a central partition, the latter having hooks on each side disposed circularly around a through-going, rigidly mounted spindle for the rollers for retaining the rollers by engaging a groove on the cylindrical surface of the roller hub, when the roller is mounted upon the spindle.
Inventors
- 👤 Bent Harlang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:06
CPC Classifications
B; B60; B60B; B60B33/00; B60B33/0036; B60B33/0042
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
263 words
A housing for castors having twin rollers, said twin rollers being of the type having a groove in the cylindrical surface of its inwardly projecting hub, said housing comprising: (a) a unitary roller cover having a central partition; (b) a first axle rigidly mounted on said partition and extending from a first side of said partition, said first axle adapted to support one of said twin rollers; (c) a second axle rigidly mounted on said partition and extending from a second side of said partition, said second axle adapted to support the other of said twin rollers; (d) a bore in said partition spaced from said first and second axles and adapted to receive a spigot for said castor; (e) a first and second slightly elastic hooks extending from said first side of said partition, said first and second hooks being located along an arc of a circle which is concentric with said first axle; (f) third and fourth slightly elastic hooks extending from said second side of said partition, said third and fourth hooks being located along an arc of a circle which is concentric with said second axle; (g) said first and second hooks each having a radially inward projecting lug adapted to engage said groove in said one of said twin rollers to retain said one of said twin rollers on said first spindle; (h) said third and fourth hooks each having a radially inwardly projecting lug adapted to engage said groove in said other of said twin rollers to retain said other of twin rollers on said second spindle.
Claim 2
Dependent Claim
263 words
A housing for castors having twin rollers, said twin rollers being of the type having a groove in the cylindrical surface of its inwardly projecting hub, said housing comprising: (a) a unitary roller cover having a central partition; (b) a first axle rigidly mounted on said partition and extending from a first side of said partition, said first axle adapted to support one of said twin rollers; (c) a second axle rigidly mounted on said partition and extending from a second side of said partition, said second axle adapted to support the other of said twin rollers; (d) a bore in said partition spaced from said first and second axles and adapted to receive a spigot for said castor; (e) a first and second slightly elastic hooks extending from said first side of said partition, said first and second hooks being located along an arc of a circle which is concentric with said first axle; (f) third and fourth slightly elastic hooks extending from said second side of said partition, said third and fourth hooks being located along an arc of a circle which is concentric with said second axle; (g) said first and second hooks each having a radially inward projecting lug adapted to engage said groove in said one of said twin rollers to retain said one of said twin rollers on said first spindle; (h) said third and fourth hooks each having a radially inwardly projecting lug adapted to engage said groove in said other of said twin rollers to retain said other of twin rollers on said second spindle.
Claim 3
Dependent Claim
46 words
A housing according to claim 1, in which openings or perforations are provided in the central partition flush with the inner side of the hooks, said openings or perforations being at least of a size corresponding to the largest cross-section of a hook with its lug.
Claim 4
Dependent Claim
24 words
A housing according to claim 1 wherein said first and second axles are opposite ends of a single axle extending through said central partition.
References Cited (Backward Citations)
US2539108A
Cited
US3040370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |