US4021017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Third member handling jack
Assignee: Individual
•
Filing: 1976-10-06
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Granted: 1977-05-03
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Expires: 1996-10-06
Abstract
Abstract The disclosure relates to a handling jack for large truck gear boxes, such as third members or the like; the handling jack being adapted to move into position beneath a truck and being provided with a normally vertical column which is adapted to be pivoted on a horizontal axis at a low lever away from a position over the frame of the jack so as to be moveable into position beneath a truck and retractable from a position beneath a truck; and the column member being moveable into vertical position and provided with a handling boom thereon so as to position the handling boom above a truck gear box or third member assembly so as to freely suspend the third member and allow angular freedom of movement thereof for readily removing and replacing the gear box or third member. The jack is provided with a frame having a very low level on which the gear box may be pivoted downwardly on a horizontal axis at a low level so as to provide for the removal of the jack, the column structure and the boom, together with a gear box or third member which at that time may be carried on the frame of the jack.
Inventors
- 👤 Ernest E. Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:35
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/18; B66C23/36; B66C23/48
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
165 words
A handling jack for large truck gear boxes or the like comprising: a portable base frame; said frame being provided with a base adapted to carry a gear box or the like; upright column structure; pivot means pivotally mounting said column structure on said base frame; said pivot means having a generally horizontal pivotal axis; said column structure having a longitudinal axis disposed at an angle to said pivotal axis; extendable means adapted to extend said column means in a direction along said longitudinal axis; a boom pivotally coupled to said column structure on a generally horizontal axis; said pivot means permitting said column and boom structure to pivot away from a position over said base frame to a low level position; said extendable means coupled to said boom for pivoting it on said last mentioned horizontal axis; and suspension means carried by said boom for suspending and supporting a gear box, such as a third member of a truck, in connection with said boom.
Claim 2
Dependent Claim
165 words
A handling jack for large truck gear boxes or the like comprising: a portable base frame; said frame being provided with a base adapted to carry a gear box or the like; upright column structure; pivot means pivotally mounting said column structure on said base frame; said pivot means having a generally horizontal pivotal axis; said column structure having a longitudinal axis disposed at an angle to said pivotal axis; extendable means adapted to extend said column means in a direction along said longitudinal axis; a boom pivotally coupled to said column structure on a generally horizontal axis; said pivot means permitting said column and boom structure to pivot away from a position over said base frame to a low level position; said extendable means coupled to said boom for pivoting it on said last mentioned horizontal axis; and suspension means carried by said boom for suspending and supporting a gear box, such as a third member of a truck, in connection with said boom.
Claim 3
Dependent Claim
177 words
A handling jack for large truck gear boxes or the like comprising: a portable base frame; rollers coupled to a lower portion of said frame and adapted to moveably support said base frame on a hard floor or the like; an elongated normally upright column structure; pivot means pivotally mounting said column structure on said base frame; said pivot means being on a generally horizontal pivotal axis; said column structure having a longitudinal axis disposed at an angle to said pivotal axis; extendable means adapted to extend said column means in a direction along said longitudinal axis; a boom pivotally coupled to said column structure on a generally horizontal axis; said pivot means permitting said column and boom structure to pivot away from a position over said base frame to a low level position; said extendable means coupled to said boom for pivoting it on said last mentioned horizontal axis; and suspension means carried by said boom for suspending and supporting a gear box, such as a third member of a truck in connection with said boom.
Claim 4
Dependent Claim
177 words
A handling jack for large truck gear boxes or the like comprising: a portable base frame; rollers coupled to a lower portion of said frame and adapted to moveably support said base frame on a hard floor or the like; an elongated normally upright column structure; pivot means pivotally mounting said column structure on said base frame; said pivot means being on a generally horizontal pivotal axis; said column structure having a longitudinal axis disposed at an angle to said pivotal axis; extendable means adapted to extend said column means in a direction along said longitudinal axis; a boom pivotally coupled to said column structure on a generally horizontal axis; said pivot means permitting said column and boom structure to pivot away from a position over said base frame to a low level position; said extendable means coupled to said boom for pivoting it on said last mentioned horizontal axis; and suspension means carried by said boom for suspending and supporting a gear box, such as a third member of a truck in connection with said boom.
Claim 5
Dependent Claim
67 words
The invention as defined in claim 1, wherein: said suspension means comprises a universal joint means adapted to provide angular freedom of movement in several directions for suspending a third member or the like and thereby allowing angular freedom of movement of said third member so as to line up splines or other connecting structure while the said third member is suspended by said universal joint means.
Claim 6
Dependent Claim
34 words
The invention as defined in claim 1, wherein: said extendable means being a hydraulic cylinder having a plunger pivotally coupled to said boom in spaced relation to its pivotal connection with said column structure.
Claim 7
Dependent Claim
58 words
The invention as defined in claim 1, wherein: said base frame is provided with a pair of horizontally spaced apart and horizontally elongated members; and a pair of work supports adjustably moveably mounted on said elongated members; said work supports adapted to engage and support features of a gear box, such as a third member or the like.
Claim 8
Dependent Claim
74 words
The invention as defined in claim 5, wherein: said work supports are provided with a generally channel shaped cross section; said channel shaped cross section being declined downwardly such that the work supports mounted on said horizontally elongated base members are opposed and directed downwardly toward each other so as to allow the lowest possible carrying position of the flange of a third member relative to a floor on which said frame is supportable.
Claim 9
Dependent Claim
27 words
The invention as defined in claim 4, wherein: a manual pump is coupled to said cylinder and adapted to provide fluid under pressure to extend said cylinder.
Claim 10
Dependent Claim
25 words
The invention as defined in claim 1, wherein: said column structure is also pivotally mounted on said base to pivot about a generally vertical axis.
Claim 11
Dependent Claim
52 words
The invention as defined in claim 5, wherein: said column structure is pivotally mounted on said base to pivot about a generally vertical axis; said column structure being located on said base nearer to one of said horizontally elongated members than to the other one of said pair of horizontally elongated members.
Claim 12
Dependent Claim
28 words
The invention as defined in claim 1, wherein: an adjustable pivot mount is adjustable longitudinally to said column structure; said boom pivotally mounted on said adjustable pivot mount.
Claim 13
Dependent Claim
28 words
The invention as defined in claim 1, wherein: said boom is elongated and provided with means for longitudinally extending and shortening said boom relative to said column structure.
Claim 14
Dependent Claim
36 words
The invention as defined in claim 3, wherein: a bracket is connectable with said suspension means; said bracket removeably secureable to a gear box, third member, or the like, generally above the center of gravity thereof.
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) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |