Patent US4516308A successfully refreshed from Google Patents.
US4516308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable workshop
Assignee: Individual
•
Filing: 1983-04-18
•
Granted: 1985-05-14
•
Expires: 2003-04-18
Abstract
Abstract The invention relates to a portable workshop having various facilities for performing precision machine work at a work site and which includes a mobile trailer having first and second sections with transport wheel and suspension assemblies and a trailer hitch whereby the trailer may be easily towed from one work site to another. One section is separable from the other and the transport wheels remain with one platform while smaller wheels are provided on the other platform with elevating mechanism to lower the platform onto the smaller wheels. One platform may have equipment such as a welder which might be separated and used on one location at the job site while the other section has various tools, including a crane and a container for storing the tools, which might be moved to and utilized at another location at the site.
Inventors
- 👤 John A. Urban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:11
CPC Classifications
B; B23; B23Q; B23Q39/00; B25; B25H; B25H1/00; B25H1/0021; B25H1/02; B25H1/04; B25H1/14; B25H1/16; Y; Y10; Y10T; Y10T29/00; Y10T29/50; Y10T29/51; Y10T29/5136; Y10T29/52
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
217 words
A portable workshop for facilitating precision machine work at various job sites including a mobile trailer frame supported for easy transport to a job site including a first section, a second section, and means to removably connect said first and second sections; first wheel means connected to said first section for portable support thereof; second wheel means connected to said second section for portable support thereof; a vertically-extending support column connected to and supported by said first section of said trailer frame; a first platform associated with said first section of said trailer frame adapted to support a tool container thereon; a second platform associated with said second section of said trailer frame adapted to support welding equipment or the like, said section being easily detachable from said first section for removal therefrom at a job site; a mounting arm; means to connect said mounting arm to said vertical support at any of a number of predetermined heights; means to adjust said mounting arm from one height to another, said arm adapted to function as a mounting support for any of a number of power tools adapted to be adjustably positioned along and supported by said arm; and hitching means attached to said trailer frame to provide for connecting of said trailer frame to a towing vehicle.
Claim 2
Dependent Claim
217 words
A portable workshop for facilitating precision machine work at various job sites including a mobile trailer frame supported for easy transport to a job site including a first section, a second section, and means to removably connect said first and second sections; first wheel means connected to said first section for portable support thereof; second wheel means connected to said second section for portable support thereof; a vertically-extending support column connected to and supported by said first section of said trailer frame; a first platform associated with said first section of said trailer frame adapted to support a tool container thereon; a second platform associated with said second section of said trailer frame adapted to support welding equipment or the like, said section being easily detachable from said first section for removal therefrom at a job site; a mounting arm; means to connect said mounting arm to said vertical support at any of a number of predetermined heights; means to adjust said mounting arm from one height to another, said arm adapted to function as a mounting support for any of a number of power tools adapted to be adjustably positioned along and supported by said arm; and hitching means attached to said trailer frame to provide for connecting of said trailer frame to a towing vehicle.
Claim 3
Dependent Claim
42 words
A portable workshop as in claim 1 including a horizontally extending worktable connectable to said vertical support column at any of a number of predetermined heights, easily adjustable from one height to another and easily removable from said support column for storage.
Claim 4
Dependent Claim
25 words
A portable workshop as in claim 1 including a crane assembly mounted on said vertical support for raising or lowering articles at a job site.
Claim 5
Dependent Claim
39 words
A portable workshop as in claim 1 in which said second wheel means includes transport wheels and suspension assemblies mounted to said second section, said wheels and suspension supporting both said sections when connected for transport between job sites.
Claim 6
Dependent Claim
27 words
A portable workshop as in claim 4 wherein said wheels and suspension stay with the second platform when said first section is separated at a job site.
Claim 7
Dependent Claim
40 words
A portable workshop as in claim 5 wherein said first wheel means includes relatively smaller wheels supporting said first platform when separated from the second platform, and stabilizing means for supporting said first section when removed from said second section.
Claim 8
Dependent Claim
19 words
A portable workshop as in claim 5 wherein said second platform includes leveling devices spaced from said transport wheels.
Claim 9
Dependent Claim
42 words
A portable workshop as in claim 2 having one or more tools mountable on said arm for back-and-forth movements on the arm, said arm being pivotally mounted whereby the tool may be positioned at a wide variety of positions overlying said worktable.
References Cited (Backward Citations)
US2811111A
Cited
US3317219A
Cited
US3321214A
Cited
US3633970A
Cited
US4055206A
Cited
US4133572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-13 | 1988-11-12 | 1989-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-13 | 1992-11-12 | 1993-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-13 | 1996-11-12 | 1997-05-14 | $7700.00 | Window Closed / Lapsed |