Patent US2089730A successfully refreshed from Google Patents.
Patent US4747243A successfully refreshed from Google Patents.
US4747243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible porch
Assignee: Individual
•
Filing: 1987-05-01
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Granted: 1988-05-31
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Expires: 2007-05-01
Abstract
Abstract A portable collapsible porch is provided for use with campers, camping trailers and the like which includes a foldable platform structure and collapsible legs, stairway and protective rail structure, thereby requiring minimal space for storage and transportation, and further includes adjustable legs to facilitate use in uneven terrain.
Inventors
- 👤 Kenneth L. Anstead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:46
CPC Classifications
E; E04; E04F; E04F11/00; E04F11/02; E04B; E04B1/00; E04B1/343; E04B1/34336; E04F11/18; E06; E06C; E06C1/00; E06C1/02; E06C1/14; E06C1/24; E06C1/26; E04F11/1865
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
274 words
A portable collapsible porch for use with campers, camping trailers and the like, comprising: a platform structure having a top surface and a bottom surface and consisting substantially of: a first rod having a left end and a right end; a second rod having a left end and a right end oriented substantially parallel to said first rod; a third rod having a first end pivotally attached to said left end of said first rod and a second end; a fourth rod having a first end pivotally attached to said left end of said second rod and a second end pivotally attached to said second end of said third rod; a fifth rod having a first end pivotally attached to said right end of said first rod and a second end, and a sixth rod having a first end pivotally attached to said right end of said second rod and a second end pivotally attached to said second end of said fifth rod, so that said platform structure folds into a compact substantially rectangular unit for storage; a first leg attached to said platform structure near said left end of said first rod; a second leg attached to said platform structure near said right end of said first rod; a third leg attached to said platform structure near said left end of said second rod; a fourth leg attached to said platform structure near said right end of said second rod; a stairway structure attached to said platform structure, and a protective rail structure positioned above said top surface of said platform structure to ensure the safety of individuals using said portable collapsible porch.
Claim 2
Dependent Claim
274 words
A portable collapsible porch for use with campers, camping trailers and the like, comprising: a platform structure having a top surface and a bottom surface and consisting substantially of: a first rod having a left end and a right end; a second rod having a left end and a right end oriented substantially parallel to said first rod; a third rod having a first end pivotally attached to said left end of said first rod and a second end; a fourth rod having a first end pivotally attached to said left end of said second rod and a second end pivotally attached to said second end of said third rod; a fifth rod having a first end pivotally attached to said right end of said first rod and a second end, and a sixth rod having a first end pivotally attached to said right end of said second rod and a second end pivotally attached to said second end of said fifth rod, so that said platform structure folds into a compact substantially rectangular unit for storage; a first leg attached to said platform structure near said left end of said first rod; a second leg attached to said platform structure near said right end of said first rod; a third leg attached to said platform structure near said left end of said second rod; a fourth leg attached to said platform structure near said right end of said second rod; a stairway structure attached to said platform structure, and a protective rail structure positioned above said top surface of said platform structure to ensure the safety of individuals using said portable collapsible porch.
Claim 3
Dependent Claim
20 words
The invention of claim 1, wherein said first, second, third and fourth legs are pivotally attached to said platform structure.
Claim 4
Dependent Claim
23 words
The invention of claim 2, wherein said first, second, third and fourth legs are attached to said bottom surface of said platform structure.
Claim 5
Dependent Claim
15 words
The invention of claim 1, including adjustment means for adjusting the length of said legs.
Claim 6
Dependent Claim
15 words
The invention of claim 2, including adjustment means for adjusting the length of said legs.
Claim 7
Dependent Claim
15 words
The invention of claim 3, including adjustment means for adjusting the length of said legs.
Claim 8
Dependent Claim
27 words
The invention of claim 1, wherein said stairway structure includes quick connect/disconnect means whereby said stairway structure is quickly attached to and detached from said platform structure.
Claim 9
Dependent Claim
28 words
The invention of claim 1, wherein said protective rail structure includes quick attaching means whereby said protective rail structure quickly attaches to and detaches from said platform structure.
Claim 10
Dependent Claim
29 words
The invention of claim 8, wherein said protective rail structure includes positioning means for adjusting the vertical position of said protective rail structure with respect to said platform structure.
Claim 11
Dependent Claim
275 words
A portable collapsible porch for use with campers, camping trailers and the like, comprising: a platform structure having a top surface and a bottom surface and consisting substantially of: a first rod having a left end and a right end; a second rod having a left end and a right end oriented substantially parallel to said first rod; a third rod having a first end pivotally attached to said left end of said first rod and a second end; a fourth rod having a first end pivotally attached to said left end of said second rod and a second end pivotally attached to said second end of said third rod; a fifth rod having a first end pivotally attached to said right end of said first rod and a second end, and a sixth rod having a first end pivotally attached to said right end of said second rod and a second end pivotally attached to said second end of said fifth rod, so that said platform structure folds into a compact substantially rectangular unit for storage; a first leg attached to said platform structure near said left end of said first rod; a second leg attached to said platform structure near said right end of said first rod; a third leg attached to said platform structure near said left end of said second rod; a fourth leg attached to said platform structure near said right end of said second rod; a protective rail structure positioned above said top surface of said platform structure to ensure the safety of individuals using said portable collapsible porch, and a stairway structure attached to said protective rail structure.
Claim 12
Dependent Claim
275 words
A portable collapsible porch for use with campers, camping trailers and the like, comprising: a platform structure having a top surface and a bottom surface and consisting substantially of: a first rod having a left end and a right end; a second rod having a left end and a right end oriented substantially parallel to said first rod; a third rod having a first end pivotally attached to said left end of said first rod and a second end; a fourth rod having a first end pivotally attached to said left end of said second rod and a second end pivotally attached to said second end of said third rod; a fifth rod having a first end pivotally attached to said right end of said first rod and a second end, and a sixth rod having a first end pivotally attached to said right end of said second rod and a second end pivotally attached to said second end of said fifth rod, so that said platform structure folds into a compact substantially rectangular unit for storage; a first leg attached to said platform structure near said left end of said first rod; a second leg attached to said platform structure near said right end of said first rod; a third leg attached to said platform structure near said left end of said second rod; a fourth leg attached to said platform structure near said right end of said second rod; a protective rail structure positioned above said top surface of said platform structure to ensure the safety of individuals using said portable collapsible porch, and a stairway structure attached to said protective rail structure.
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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) | 1991-05-31 | 1991-11-30 | 1992-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-31 | 1995-11-30 | 1996-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-31 | 1999-11-30 | 2000-05-31 | $7700.00 | Window Closed / Lapsed |