Patent US3620550A successfully refreshed from Google Patents.
US3620550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double-fold frame structure
Assignee: Individual
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Filing: 1969-11-03
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Granted: 1971-11-16
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Expires: 1989-11-03
Abstract
Abstract This invention is a double-fold frame structure usable in farm machinery to support harrow tooth members and the like and movable from the extended earth-working condition through a series of folding maneuvers into a compact unit easily movable upon the highway, through gates, etc. More particularly, this invention is a frame structure to be pulled normally by a farm tractor including lift bar assemblies and pull bar assemblies to maintain a rigid structure when in the earth-working condition but permitting the same to be easily moved into a compact, transport condition with the aid of hydraulic control means.
Inventors
- 👤 Richard J Hornung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:30
CPC Classifications
A; A01; A01B; A01B73/00; A01B73/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
245 words
A double-fold frame structure adapted to be pulled by a tractor structure, or the like comprising: a. a main attachment tongue assembly having one end connectable to the tractor structure and the opposite end connected to a central frame assembly by a pull bar assembly, b. an intermediate wing assembly connected to each respective end of said Central frame assembly, c. an outer wing assembly connected to each respective outer end of said intermediate wing assemblies, d. a lift bar assembly connected to said central frame assembly to pivot same and said intermediate wing assemblies and said outer wing assemblies from a generally horizontal earth working position to a generally vertical position, e. the outer ends of said outer wing assemblies pivotal into abutting engagement with respective ones of said intermediate wing assemblies and adjacent central frame assembly for storage and transporting purposes f. a control means mounted on said attachment tongue assembly including a piston and cylinder assembly connected to said lift bar assembly movable from extended to retracted positions to pivot said central frame assembly, said intermediate wing assemblies, and said outer wing assemblies about a horizontal axis, g. said attachment tongue assembly having an elongated tongue member, h. said lift bar assembly secured to a connector assembly mounted on said tongue member for horizontal, axial movement, i. said connector assembly connected to said piston and cylinder assembly to move same axially on said tongue member for movement from extended to retracted positions.
Claim 2
Dependent Claim
245 words
A double-fold frame structure adapted to be pulled by a tractor structure, or the like comprising: a. a main attachment tongue assembly having one end connectable to the tractor structure and the opposite end connected to a central frame assembly by a pull bar assembly, b. an intermediate wing assembly connected to each respective end of said Central frame assembly, c. an outer wing assembly connected to each respective outer end of said intermediate wing assemblies, d. a lift bar assembly connected to said central frame assembly to pivot same and said intermediate wing assemblies and said outer wing assemblies from a generally horizontal earth working position to a generally vertical position, e. the outer ends of said outer wing assemblies pivotal into abutting engagement with respective ones of said intermediate wing assemblies and adjacent central frame assembly for storage and transporting purposes f. a control means mounted on said attachment tongue assembly including a piston and cylinder assembly connected to said lift bar assembly movable from extended to retracted positions to pivot said central frame assembly, said intermediate wing assemblies, and said outer wing assemblies about a horizontal axis, g. said attachment tongue assembly having an elongated tongue member, h. said lift bar assembly secured to a connector assembly mounted on said tongue member for horizontal, axial movement, i. said connector assembly connected to said piston and cylinder assembly to move same axially on said tongue member for movement from extended to retracted positions.
Claim 3
Dependent Claim
73 words
A double-fold frame structure as described in claim 1, wherein: a. said attachment tongue assembly having said elongated tongue member with a vertical T-support assembly connected thereto, and b. said piston and cylinder assembly connected to said T-support assembly and said connector assembly to move said lift bar assembly longitudinally relative said tongue member to pivot said central frame assembly, said intermediate wing assemblies, and said outer wing assemblies about the horizontal axis.
Claim 4
Dependent Claim
76 words
A double-fold frame structure as described in claim 2, wherein: a. said T-support assembly having upright telescoping tube members and a transversely extended support bar secured to the upper one of said tube members, and b. said piston and cylinder assembly movable from a horizontal position to a vertical position connectable to said upper tube member for elevating same and interconnected ones of said intermediate wing assemblies and said outer wing assemblies to the transport condition.
Claim 5
Dependent Claim
139 words
A double-fold frame structure as described in claim 1, wherein: a. said pull bar assembly having pairs of pull bar members connected between said attachment tongue assembly and each respective one of said central frame assembly, said intermediate wing assemblies, and said outer wing assemblies, and b. said pull bar assembly further including rigid side brace bar members connected to said attachment tongue assembly and the outer ends of said brace bar members are secured at a common junction to said pull bar members attached to said intermediate and outer wing assemblies, respectively, to add substantial lateral stability thereto, and c. said tongue member having a transversely extended support tube secured to the outer ends, and d. said support tube having outer ends secured to said pull bar members attached to said central frame assembly to add lateral stability.
Claim 6
Dependent Claim
69 words
A double-fold frame structure as described in claim 4, wherein: a. said attachment tongue assembly including a vertically extended T-support assembly mounted on said tongue member, and b. said T-support assembly including a support bar extended transversely of said tongue member having outer ends respectively connected by brace chain members to the connection of said brace bar members and said pull bar members to achieve vertical support and stability.
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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |