US3744819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling device for molten metal carrier
Assignee: National Southwire Aluminum Co
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Filing: 1971-09-28
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Granted: 1973-07-10
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Expires: 1991-09-28
Abstract
Abstract This disclosure relates to a coupling device for connecting a molten metal carrier to a draft vehicle. The coupling device includes a pin slidable within a housing and engageable with a ring portion of a draw bar of the carrier. Actuation of the pin to engage and disengage the draw bar is accomplished by a cable connected to the pin and extending to a control lever in the draft vehicle. A guide ramp extending from the housing permits the operator of the draft vehicle to hook-up to the carrier as well as to engage and disengage the draw bar without alighting from the vehicle.
Inventors
- 👤 H Cook
- 👤 R Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:54
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/01; B60D1/02; B60D1/025
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
129 words
A coupling device aDapted to connect a draw bar of a drawn vehicle to a draft vehicle comprising a draw bar having vertically extending guide means adjacent its forward end, a housing having coupling means slidably received therein, an inclined ramp extending below said housing and guide arms spaced above and extending over at least a substantial portion of said ramp and engageable with said vertically extending guide means for guiding said draw bar into the interior of said housing, means for actuating said coupling means to engage and disengage said draw bar, and means remote from said coupling means for operating said actuating means whereby the drawn vehicle may be connected and disconnected from the draft vehicle solely by the operator of the draft vehicle without alighting therefrom.
Claim 2
Dependent Claim
129 words
A coupling device aDapted to connect a draw bar of a drawn vehicle to a draft vehicle comprising a draw bar having vertically extending guide means adjacent its forward end, a housing having coupling means slidably received therein, an inclined ramp extending below said housing and guide arms spaced above and extending over at least a substantial portion of said ramp and engageable with said vertically extending guide means for guiding said draw bar into the interior of said housing, means for actuating said coupling means to engage and disengage said draw bar, and means remote from said coupling means for operating said actuating means whereby the drawn vehicle may be connected and disconnected from the draft vehicle solely by the operator of the draft vehicle without alighting therefrom.
Claim 3
Dependent Claim
33 words
A coupling device as defined in claim 1 wherein said coupling means includes a pin slidable in a sleeve in a direction transverse to the disposition of said draw bar within said housing.
Claim 4
Dependent Claim
19 words
A coupling device as defined in claim 2 wherein said pin includes cam surfaces engageable with said actuating means.
Claim 5
Dependent Claim
29 words
A coupling device as defined in claim 3 wherein said actuating means includes a bifurcated lever biased to urge said pin in an engaged position with said draw bar.
Claim 6
Dependent Claim
34 words
A coupling device as defined in claim 1 wherein said means remote from said coupling means includes a cable connected to said actuating means and extending to a control lever in the draft vehicle.
Claim 7
Dependent Claim
22 words
A coupling device as defined in claim 1 wherein said draw bar includes a ring portion adapted to receive said coupling means.
Claim 8
Dependent Claim
61 words
A coupling device as defined in claim 1 wherein said draw bar includes foot means adapted to support said draw bar a predetermined distance above the ground corresponding to the elevation of said ramp, whereby said draw bar is adapted to be lifted and guided into said housing by said ramp as said draw bar and said housing are brought together.
Claim 9
Dependent Claim
34 words
A coupling device as defined in claim 1 wherein means integral with said housing are provided for lifting said draw bar into said housing as said draft vehicle is connected to said drawn vehicle.
Claim 10
Dependent Claim
64 words
A coupling device as defined in claim 1 wherein said draw bar includes foot means for supporting said draw bar a predetermined distance above the ground when said foot means is in contact with the ground, said inclined ramp raising said foot means from the ground and guiding said draw bar into said housing as said draft vehicle is connected to said drawn vehicle.
Claim 11
Dependent Claim
37 words
A coupling device as defined in claim 1 wherein said vertically extending guide means includes a guide stud mounted on said draw bar and extending vertically therefrom and adapted to cooperate with said guide arms during coupling.
References Cited (Backward Citations)
US1384944A
Cited
US2441285A
Cited
US2671673A
Cited
US2844390A
Cited
US3326575A
Cited
US3627352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |