Patent US3838783A successfully refreshed from Google Patents.
US3838783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable hydraulic service lift for automotive equipment
Assignee: TILT-TECH CORP
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Filing: 1973-03-02
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Granted: 1974-10-01
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Expires: 1993-03-02
Abstract
Abstract A base is made up of two parallel base beams tied together by extensible connections. Adjacent each end of each beam is a fully swiveled caster wheel. Each wheel is also vertically movable into and out of floor engaging position. A vehicle-receiving platform is hinged to each of said base beams and extends parallel thereto. Each of said base beams has a hydraulic piston pivoted thereto. A hydraulic cylinder surrounds each piston and is pivoted to the adjacent vehicle receiving platform. A vehicle wheel stop is attached to each of said platforms adjacent its pivot to its base beam.
Inventors
- 👤 S Tune
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:47
CPC Classifications
B; B66; B66F; B66F7/00; B66F7/22; B66F7/02; B66F7/04
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
185 words
A device for tilting a vehicle to permit servicing of the running gear and underside thereof or to dump cargo therefrom, said device comprising: a pair of spaced, parallel base beams; a pair of connectors for said beams each located adjacent one end of each of said beams; a pair of spaced, separate vehicle receiving platforms for receiving the entire vehicle to be serviced, each pivoted at one end to one of said beams to constitute a base beam and platform assembly; a pair of fluidpressure operated lifting units, each comprising a pressureapplying device and a follower device, each of said units having its pressure-applying device pivoted to one of the members of a base beam and platform assembly and the follower device of such unit being pivoted to the other member of such assembly, and means for supplying fluid pressure simultaneously to both of said pressure-applying devices whereby to tilt said platforms relative to said beams, each of said beams being equipped with at least one individually fluid actuable lift means for selectively freeing one or more wheels of a vehicle to be serviced.
Claim 2
Independent Claim
185 words
A device for tilting a vehicle to permit servicing of the running gear and underside thereof or to dump cargo therefrom, said device comprising: a pair of spaced, parallel base beams; a pair of connectors for said beams each located adjacent one end of each of said beams; a pair of spaced, separate vehicle receiving platforms for receiving the entire vehicle to be serviced, each pivoted at one end to one of said beams to constitute a base beam and platform assembly; a pair of fluidpressure operated lifting units, each comprising a pressureapplying device and a follower device, each of said units having its pressure-applying device pivoted to one of the members of a base beam and platform assembly and the follower device of such unit being pivoted to the other member of such assembly, and means for supplying fluid pressure simultaneously to both of said pressure-applying devices whereby to tilt said platforms relative to said beams, each of said beams being equipped with at least one individually fluid actuable lift means for selectively freeing one or more wheels of a vehicle to be serviced.
Claim 3
Dependent Claim
30 words
The device of claim 1, including, on each of said platforms, a vehicle wheel stop affixed to such platform and projecting upwardly therefrom adjacent its pivot to a base beam.
Claim 4
Dependent Claim
47 words
The device of claim 2 including a bumper member associated with said wheel stops, said bumper member extending between said stops and extendiNg rearwardly to encounter a portion of a vehicle and to stop the same before the wheels of the vehicle encounter the fixed wheel stops.
Claim 5
Dependent Claim
29 words
The device of claim 1 including a caster adjacent the underside of each end of each base beam and means for retracting each caster out of floor contacting position.
Claim 6
Dependent Claim
29 words
The device of claim 1 including an individual ramp detachably secured to each of said base beams adjacent the ends of said beams opposite the pivots of said platforms.
Claim 7
Dependent Claim
28 words
The device of claim 1 including means associated with each platform and base beam assembly for limiting the angle of tilt of the platform relative to the beam.
Claim 8
Dependent Claim
24 words
The device of claim 1 including means for adjusting the length of each of said connectors and thereby the spacing between beams and platforms.
Claim 9
Dependent Claim
64 words
The device of claim 1 including, for each of said lifting units, a rack attached to said followers; a pawl pivoted to said pressure-applying device and engaging said rack whereby to prevent collapse of said platforms in the event of fluid pressure failure and means to disengage said pawl from said rack to permit lowering of said platforms and further including overcenter safety means.
Claim 10
Dependent Claim
39 words
The device of claim 1 including a connector between the free ends of said platforms, said connector being of greater depth than said platforms and bearing on said base beams when said platforms are parallel to said base beams.
Claim 11
Dependent Claim
20 words
The device of claim 9 including means to adjust the length of said connector to adjust the spacing between platforms.
Claim 12
Dependent Claim
26 words
The device set forth in claim 1 further including means detachably secured to one of said connectors for receiving the center wheel of a three-wheeled vehicle.
Claim 13
Dependent Claim
19 words
The device set forth in claim 11 wherein said detachable means comprises a ramp and a wheel receiving platform.
Claim 14
Dependent Claim
20 words
The device set forth in claim 12 wherein said wheel receiving platform is adjustable to accommodate vehicles of varying lengths.
Claim 15
Dependent Claim
21 words
The device set forth in claim 11 further including means engaging said platforms for adjusting the width of said detachable means.
Claim 16
Dependent Claim
25 words
The device set forth in claim 1 wherein said means for individually freeing said wheels comprises hydraulically actuated lift means adjustably positioned below said platforms.
Claim 17
Dependent Claim
15 words
The device set forth in claim 7 wherein said means for adjusting includes hydraulic means.
Claim 18
Dependent Claim
15 words
The device set forth in claim 10 wherein said means for adjusting includes hydraulic means.
Claim 19
Independent Claim
114 words
A device for tilting a vehicle to permit servicing of the running gear and underside thereof comprising: a. a pair of spaced parallel base beams; b. a pair of spaced separate vehicle receiving platforms for receiving the entire vehicle to be serviced, each pivoted at one end to one of said beams to constitute a base beam and platform assembly; c. a pair of lifting units for tilting said platforms relative to said base beams; d. an upstanding guide rail on each platform; e. means for receiving the center wheel of a three wheeled vehicle comprising a wheel receiving platform having a pair of slotted support brackets for removably engaging said upstanding guide rails.
Claim 20
Independent Claim
114 words
A device for tilting a vehicle to permit servicing of the running gear and underside thereof comprising: a. a pair of spaced parallel base beams; b. a pair of spaced separate vehicle receiving platforms for receiving the entire vehicle to be serviced, each pivoted at one end to one of said beams to constitute a base beam and platform assembly; c. a pair of lifting units for tilting said platforms relative to said base beams; d. an upstanding guide rail on each platform; e. means for receiving the center wheel of a three wheeled vehicle comprising a wheel receiving platform having a pair of slotted support brackets for removably engaging said upstanding guide rails.
Claim 21
Dependent Claim
30 words
The device of claim 18 further including fluid actuated means for adjusting the spacing between beams and platforms and for simultaneously adjusting the width of said center wheel receiving platform.
Claim 22
Dependent Claim
20 words
The device of claim 19 wherein said center wheel receiving platform is longitudinally expandable to accommodate vehicles of varying lengths.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |