Patent US1402032A successfully refreshed from Google Patents.
Patent US3796028A successfully refreshed from Google Patents.
US3796028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implement lift hitch
Assignee: Garden Way Inc
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Filing: 1972-12-04
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Granted: 1974-03-12
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Expires: 1992-12-04
Abstract
Abstract An implement is hitched to the lift assembly of a vehicle such as a tractor by cooperating lift hitches which establish a pivotal connection between the implement and the lift assembly. Each lift hitch includes rigid links pivotally fastened to the implement and provided with slots that operably engage a lift pin of the lift assembly to suspend the links from the lift pin. A tension spring interconnects the links to maintain the links in inverted V-shaped configuration when coupled to the lift pin and to prevent accidental dislodgement of the lift pin from the slots in the links. The slots each include a circular segment and an entrance opening narrower than the diameter of said segment for receiving a large diameter resilient sleeve which is loosely journaled on the lift pin and is deformed as it is moved through the narrow entrance opening but returns to its normal circular shape when rotatably received in the circular segments of the cooperating links.
Inventors
- 👤 J Federspiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:33
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/64; A01D2101/00; Y; Y10; Y10S; Y10S56/00; Y10S56/09; Y10S56/22
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
97 words
A lift hitch for connecting an implement to the lift assembly of a vehicle comprising: a lift element carried by said lift assembly, a pair of links, means pivotally connecting one end of each link to the implement at spaced points along said implement, means defining a slot in the other end of each of said links for receiving said lift element upon pivotal movement of said links into a hitching position, and retaining means for releasably retaining said slots in engagement with said lift element for precluding accidental dislodgement of said lift element from said slots.
Claim 2
Dependent Claim
97 words
A lift hitch for connecting an implement to the lift assembly of a vehicle comprising: a lift element carried by said lift assembly, a pair of links, means pivotally connecting one end of each link to the implement at spaced points along said implement, means defining a slot in the other end of each of said links for receiving said lift element upon pivotal movement of said links into a hitching position, and retaining means for releasably retaining said slots in engagement with said lift element for precluding accidental dislodgement of said lift element from said slots.
Claim 3
Dependent Claim
25 words
A lift hitch according to claim 1 wherein said retaining means is deformable and serves to oppose dislodgement of the lift element from the slots.
Claim 4
Dependent Claim
32 words
A lift hitch according to claim 1 wherein said retaining means is a spring connected between said links for urging the slots of said links into firm engagement with said lift element.
Claim 5
Dependent Claim
88 words
A lift hitch according to claim 1 wherein each slot includes a relatively narrow entrance portion which leads into a circular segmented portion having a larger diameter than the width of said entrance portion; wherein said lift element is a lift pin; and wherein said retaining means is a deformable member on said lift pin having an outer cylindrical surface which is larger in diameter than the width of said entrance portion, said deformable member being deformed when it is moved through said entrance portions of each slot.
Claim 6
Dependent Claim
21 words
A lift hitch according to claim 4 wherein said deformable member is a resilient sleeve loosely fitted around said lift pin.
Claim 7
Dependent Claim
33 words
A lift hitch according to claim 4 wherein said retaining means additionally includes a spring connected between said links for urging the slots of said links into firm engagement with said lift element.
Claim 8
Dependent Claim
33 words
A lift hitch according to claim 5 wherein said retaining means additionally includes a spring connected between said links for urging the slots of said links into firm engagement with said lift element.
Claim 9
Dependent Claim
34 words
A lift hitch according to claim 1 wherein said slots may be disengaged from said lift element by lowering the lift element and pivoting the links in opposite directions away from said lift element.
Claim 10
Dependent Claim
44 words
A lift hitch according to claim 7 wherein said slots may be disengaged from said lift element by lowering the implement to the ground and by thereafter manually overcoming the retaining force and pivoting the links in opposite directions away from said lift element.
Claim 11
Dependent Claim
42 words
A lift hitch according to claim 3 wherein said spring pivots said links to a folded position below the level of the upper surface of said implement when the links are spaced from said lift element and are released from external forces.
Claim 12
Dependent Claim
26 words
A lift hitch according to claim 3 wherein the links slant downwardly in opposite directions from said lift element, and said spring is a tension spring.
Claim 13
Dependent Claim
147 words
A lift hitch for hitching an implement to a vehicle mounted lift assembly comprising: a lift element carried by said lift assembly, two links each having a slotted end and a pivoted end, means pivotally connecting the pivoted ends of said links to said implement at spaced points along said implement, said slotted end of each link being adapted to engage said lift element of the vehicle mounted lift assembly whereby both links may be suspended from said lift element, each link being pivotable about its pivoted end to a coupling position wherein its slotted end engages the above mentioned lift element, each link being pivotable from said coupling position to a disengaged position wherein its slotted end is spaced from the aforementioned lift element and thereby disconnect such link from the aforementioned lift element, and resilient means for urging said slotted ends into said coupling position.
Claim 14
Dependent Claim
147 words
A lift hitch for hitching an implement to a vehicle mounted lift assembly comprising: a lift element carried by said lift assembly, two links each having a slotted end and a pivoted end, means pivotally connecting the pivoted ends of said links to said implement at spaced points along said implement, said slotted end of each link being adapted to engage said lift element of the vehicle mounted lift assembly whereby both links may be suspended from said lift element, each link being pivotable about its pivoted end to a coupling position wherein its slotted end engages the above mentioned lift element, each link being pivotable from said coupling position to a disengaged position wherein its slotted end is spaced from the aforementioned lift element and thereby disconnect such link from the aforementioned lift element, and resilient means for urging said slotted ends into said coupling position.
Claim 15
Dependent Claim
148 words
A lift hitch for establishing a hitch connection between an implement and a vehicle mounted lift assembly, said lift hitch comprising: a first hitch link having a first end pivotally secured to the implement and having a second end adapted to establish a hitch connection with said lift assembly, a second hitch link having a first end pivotally secured to the implement and having a second end adapted to establish a hitch connection with the aforesaid lift assembly, said links being adapted to cooperate to establish a single hitch connection with the said lift assembly in such manner that the links connect said implement to said lift assembly, said links being adapted to be pivoted into hitching positions wherein they each form a hitch connection to the aforesaid lift assembly and are precluded from pivotal movement relative to each other until manually pivoted out of said hitching positions.
Claim 16
Dependent Claim
148 words
A lift hitch for establishing a hitch connection between an implement and a vehicle mounted lift assembly, said lift hitch comprising: a first hitch link having a first end pivotally secured to the implement and having a second end adapted to establish a hitch connection with said lift assembly, a second hitch link having a first end pivotally secured to the implement and having a second end adapted to establish a hitch connection with the aforesaid lift assembly, said links being adapted to cooperate to establish a single hitch connection with the said lift assembly in such manner that the links connect said implement to said lift assembly, said links being adapted to be pivoted into hitching positions wherein they each form a hitch connection to the aforesaid lift assembly and are precluded from pivotal movement relative to each other until manually pivoted out of said hitching positions.
References Cited (Backward Citations)
US2376541A
Cited
US2743654A
Cited
US3283486A
Cited
US3522694A
Cited
US3611682A
Cited
US3654749A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |