US3985237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device to raise and lower box-shaped construction elements, in particular prefabricated garages
Assignee: Individual
•
Filing: 1975-04-18
•
Granted: 1976-10-12
•
Expires: 1995-04-18
Abstract
Abstract A device to raise and lower box-shaped construction elements with the elements having at least three openings in the floor; the device including lifting cylinders designed to pass through the openings, a lifting plate mounted perpendicular to the cylinder walls and an inclined plate designed to support the construction elements.
Inventors
- 👤 Fritz Freudlsperger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:04
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/14; E04G21/16; E04G21/161
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
83 words
Device to raise and lower box-shaped construction elements, in particular prefabricated garages which exhibit at least three openings in the floor to allow passage of lifting cylinders; including a frame structure with lifting cylinders attached thereto, a lifting plate extending perpendicularly from the wall of each said cylinder to engage a shoulder in the wall of a garage; an inclined plate attached to the opposite end of said cylinder wall capable of supporting a wall of a prefabricated garage via an inserted wedge.
Claim 2
Dependent Claim
83 words
Device to raise and lower box-shaped construction elements, in particular prefabricated garages which exhibit at least three openings in the floor to allow passage of lifting cylinders; including a frame structure with lifting cylinders attached thereto, a lifting plate extending perpendicularly from the wall of each said cylinder to engage a shoulder in the wall of a garage; an inclined plate attached to the opposite end of said cylinder wall capable of supporting a wall of a prefabricated garage via an inserted wedge.
Claim 3
Dependent Claim
13 words
Device according to claim 1 in which the inclined plates has rubber linings.
Claim 4
Dependent Claim
16 words
Device according to claim 1 in which the inclined plate is threaded on said cylinder wall.
Claim 5
Dependent Claim
28 words
Device according to claim 1 in which said lifting plate is covered with a rubber lining on one side and supports a caster wheel on the other side.
Claim 6
Dependent Claim
29 words
Device according to claim 4 in which the lifting plate is shaped to mate with a cavity of the prefabricated garage and is tapered along with said rubber lining.
Claim 7
Dependent Claim
18 words
Device according to claim 1 in which the lifting vehicle includes wheels which are individually adjustable in height.
Claim 8
Dependent Claim
23 words
Device according to claim 1 in which the piston rods included with said lifting cylinders support a lifting plate via a universal joint.
Claim 9
Dependent Claim
17 words
Device according to claim 7 comprising a universal joint permitting only minor movement of said lifting plate.
Claim 10
Dependent Claim
27 words
Device according to claim 7 in which the piston rod diameter of said lifting cylinder is only 3-4 cm smaller than the opening in the garage floor.
Claim 11
Dependent Claim
18 words
Device according to claim 4 in which said wheels turn automatically 90° when the lifting device is lowered.
Claim 12
Dependent Claim
29 words
Device according to claim 10 comprising a control rod between wheel fork and the frame of lifting vehicle causing the wheels to turn 90° if said wheels are lowered.
Claim 13
Dependent Claim
26 words
Device according to claim 4 in which said rubber lining has a pressure plate backing which is mounted on the lifting plate by a universal joint.
References Cited (Backward Citations)
GB920101A
Cited
US3929241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |