US3580093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lower roller for endless tread for vehicle
Assignee: Nittai Lease Co Ltd
•
Filing: 1969-03-10
•
Granted: 1971-05-25
•
Expires: 1989-03-10
Abstract
Abstract A lower roller for the endless treads of various vehicles, particularly to a lower roller comprising a hub, elastic element provided between tire flanges and metal ring provided around said elastic element.
Inventors
- 👤 Kazuhiro Tomizawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:49
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/08; B62D55/096; B62D55/0966; Y; Y10; Y10S; Y10S474/00; Y10S474/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
A lower roller for an endless tread for vehicles comprising a hub member for support on a shaft, the hub including axially spaced tire mounting portions, each mounting portion including a radially extending end face and an annular tire mounting surface supporting a metal tire on each mounting portion, the tires each including an integral radially extending annular flange and a cylindrical portion coaxial witH and telescoped over the hub member mounting portion and extending axially outwardly from said flange, a pair of end plates bolted to the end faces of the hub and extending radially to form a second flange axially outwardly spaced from the tire flanges by the longitudinal extent of the cylindrical portion of the tires, an elastic ring extending between each pair of flanges, confined thereby, and overlying the cylindrical portions of the tires, and a metal ring overlying and supported by the elastic ring and extending between each pair of flanges, each of said flanges extending radially beyond said ring.
Claim 2
Dependent Claim
165 words
A lower roller for an endless tread for vehicles comprising a hub member for support on a shaft, the hub including axially spaced tire mounting portions, each mounting portion including a radially extending end face and an annular tire mounting surface supporting a metal tire on each mounting portion, the tires each including an integral radially extending annular flange and a cylindrical portion coaxial witH and telescoped over the hub member mounting portion and extending axially outwardly from said flange, a pair of end plates bolted to the end faces of the hub and extending radially to form a second flange axially outwardly spaced from the tire flanges by the longitudinal extent of the cylindrical portion of the tires, an elastic ring extending between each pair of flanges, confined thereby, and overlying the cylindrical portions of the tires, and a metal ring overlying and supported by the elastic ring and extending between each pair of flanges, each of said flanges extending radially beyond said ring.
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |