Patent US4185988A successfully refreshed from Google Patents.
Patent US4127305A successfully refreshed from Google Patents.
US4127305A
Expired / Lapsed
US
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Coupling device for tractor twin wheels
Assignee: Individual
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Filing: 1977-01-10
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Granted: 1978-11-28
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Expires: 1997-01-10
Abstract
Abstract A twin wheel coupling device includes a plurality of spaced knee lever mechanisms carried on supports attached to an additional wheel to be locked together with the permanent wheel of a tractor. Spaced lugs attached to the permanent wheel rim are provided with projections engageable with hooks of the knee lever mechanisms. Laterally extending pins carried by the supports of the knee lever mechanisms engage in holes provided in the lugs.
Inventors
- 👤 Kjeld R. Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:27
CPC Classifications
B; B60; B60B; B60B11/00; B60B11/06; B60B11/02; B60B15/00; B60B15/26; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0911; Y10T292/0913; Y10T292/0914; Y10T292/0917; Y10T403/00; Y10T403/16; Y10T403/1616; Y10T403/1624
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
98 words
A coupling device operable to couple two tractor wheels, comprising: a wheel rim carrying a plurality of circumferentially spaced knee lever mechanisms each comprising a maneuvering bar and a hook; a second wheel rim carrying a plurality of circumferentially spaced projections each operable to laterally engage with a respective one of said hooks; a plurality of circumferentially spaced, laterally facing holes associated with one of said rims; and a plurality of circumferentially spaced, laterally extending pins carried by the other of said rims, which also carries said knee lever mechanisms, each operable to receive one of said pins.
Claim 2
Dependent Claim
98 words
A coupling device operable to couple two tractor wheels, comprising: a wheel rim carrying a plurality of circumferentially spaced knee lever mechanisms each comprising a maneuvering bar and a hook; a second wheel rim carrying a plurality of circumferentially spaced projections each operable to laterally engage with a respective one of said hooks; a plurality of circumferentially spaced, laterally facing holes associated with one of said rims; and a plurality of circumferentially spaced, laterally extending pins carried by the other of said rims, which also carries said knee lever mechanisms, each operable to receive one of said pins.
Claim 3
Dependent Claim
103 words
A coupling device operable to couple two tractor wheels, comprising: a first wheel rim having a plurality of knee lever mechanisms, each comprising a maneuvering bar and a hook, disposed thereabout in circumferentially spaced relation; a plurality of circumferentially spaced, laterally extending supports for said knee lever mechanisms attached to said first wheel rim; a plurality of laterally extending pins projecting outwardly, one each from said supports; a second wheel rim; and a plurality of circumferentially spaced lugs, each having a projection cooperable with one of said hooks and a hole cooperable with one of said pins, attached to said second wheel rim.
Claim 4
Dependent Claim
103 words
A coupling device operable to couple two tractor wheels, comprising: a first wheel rim having a plurality of knee lever mechanisms, each comprising a maneuvering bar and a hook, disposed thereabout in circumferentially spaced relation; a plurality of circumferentially spaced, laterally extending supports for said knee lever mechanisms attached to said first wheel rim; a plurality of laterally extending pins projecting outwardly, one each from said supports; a second wheel rim; and a plurality of circumferentially spaced lugs, each having a projection cooperable with one of said hooks and a hole cooperable with one of said pins, attached to said second wheel rim.
References Cited (Backward Citations)
US3030137A
Cited
US3532383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-27 | 1982-05-29 | 1982-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-27 | 1986-05-29 | 1986-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-27 | 1990-05-29 | 1990-11-28 | $7700.00 | Window Closed / Lapsed |