Patent US6035877A successfully refreshed from Google Patents.
US6035877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible shelter
Assignee: Variflex Inc
•
Filing: 1999-02-24
•
Granted: 2000-03-14
•
Expires: 2019-02-24
Abstract
Abstract A shelter frame having at least two poles connected by a linking assembly having first and second scissors-type linkages and a linking device. The scissors-type linkages include first structural members pivotally coupled to respective second structural members and to one another. The linking device is adapted to pivotally secure a predetermined portion of the second structural member in the first scissors-type linkage to the second scissors-type linkage at a point on the second scissors-type linkage vertically spaced from the predetermined portion of the second structural member in the first scissors-type linkage and to also pivotally secure a predetermined portion of the second structural member in the second scissors-type linkage to the first scissors-type linkage at a point on the first scissors-type linkage vertically spaced from the predetermined portion of the second structural member in the second scissors-type linkage.
Inventors
- 👤 Raymond Losi, Jr.
- 👤 Ming-Liang Tsai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:10
CPC Classifications
E; E04; E04H; E04H15/00; E04H15/32; E04H15/322; E04H15/34; E04H15/44; E04H15/48; E04H15/50; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32467; Y10T403/32475; Y10T403/32483; Y10T403/60; Y10T403/606; Y10T403/70; Y10T403/7075; Y10T403/7077
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
209 words
A shelter frame, comprising: at least first and second upwardly extending poles, the first pole including a wall defining an interior portion and a pole aperture extending through the wall; a linkage assembly linking the first and second poles; at least first and second fixed connectors pivotally securing first portions of the linkage assembly to the first and second poles respectively; at least first and second sliding connectors pivotally securing second portions of the linkage assembly to the first and second poles respectively, the first sliding connector defining a sliding connector aperture; and a sliding connector locking assembly substantially within the interior portion of at least the first pole, the locking assembly including a spring having first and second spring members extending from a base member, a button associated with the first spring member and extending through the pole aperture and the sliding connector aperture, and a discrete positioning member removably fastened to the wall defining the interior portion of the at least first pole; a post coupled to the positioning member; wherein the positioning member defines a channel and the post extends across the channel, the spring fixedly secured to the post and maintained at a predetermined location within the interior portion of the at least first pole.
Claim 2
Dependent Claim
209 words
A shelter frame, comprising: at least first and second upwardly extending poles, the first pole including a wall defining an interior portion and a pole aperture extending through the wall; a linkage assembly linking the first and second poles; at least first and second fixed connectors pivotally securing first portions of the linkage assembly to the first and second poles respectively; at least first and second sliding connectors pivotally securing second portions of the linkage assembly to the first and second poles respectively, the first sliding connector defining a sliding connector aperture; and a sliding connector locking assembly substantially within the interior portion of at least the first pole, the locking assembly including a spring having first and second spring members extending from a base member, a button associated with the first spring member and extending through the pole aperture and the sliding connector aperture, and a discrete positioning member removably fastened to the wall defining the interior portion of the at least first pole; a post coupled to the positioning member; wherein the positioning member defines a channel and the post extends across the channel, the spring fixedly secured to the post and maintained at a predetermined location within the interior portion of the at least first pole.
Claim 3
Dependent Claim
14 words
A shelter frame as claimed in claim 1, wherein the spring is substantially U-shaped.
Claim 4
Dependent Claim
26 words
A shelter frame as claimed in claim 1, wherein the discrete positioning member is removably fastened to the at least first pole by a mechanical fastener.
Claim 5
Dependent Claim
15 words
A shelter frame as claimed in claim 3, wherein the mechanical fastener is a screw.
Claim 6
Dependent Claim
30 words
A shelter frame as claimed in claim 1, wherein the wall has a rectangularly shaped cross-section, and the positioning member is substantially rectangularly shaped to slidingly fit within the wall.
Claim 7
Dependent Claim
34 words
A shelter frame as claimed in claim 1, wherein the first and second poles extend upwardly in respective first and second directions, and the first and second directions have respective horizontal and vertical components.
Claim 8
Dependent Claim
51 words
A shelter frame as claimed in claim 1, wherein the shelter frame further comprises: third and fourth upwardly extending poles; a second linkage assembly linking the second and third poles; a third linkage assembly linking the third and fourth poles; and a fourth linkage assembly linking the first and fourth poles.
Claim 9
Dependent Claim
64 words
A shelter frame as claimed in claim 1, further comprising: a canopy support including a head connector, and at least first and second canopy support rods, each support rod including a first rod member pivotally secured to a second rod member, the first rod members also pivotally secured to a respective pole and the second rod members also pivotally secured to the head connector.
Claim 10
Dependent Claim
47 words
A shelter frame as claimed in claim 8, further comprising: third and fourth upwardly extending poles; a second linkage assembly linking the second and third poles; a third linkage assembly linking the third and fourth poles; and a fourth linkage assembly linking the first and fourth poles.
References Cited (Backward Citations)
US3126815A
Cited
US1326006A
Cited
US684130A
Cited
US1007322A
Cited
US1449894A
Cited
US1493915A
Cited
US1499395A
Cited
GB198803A
Cited
US1504889A
Cited
US1502898A
Cited
US1728356A
Cited
US1712826A
Cited
US2243190A
Cited
US2284686A
Cited
US2454483A
Cited
GB672815A
Cited
US2752213A
Cited
US2889838A
Cited
US3174397A
Cited
US3199518A
Cited
DE1434526A1
Cited
US3335815A
Cited
US3375624A
Cited
US3496687A
Cited
US3526066A
Cited
US3844663A
Cited
US3909055A
Cited
US4025208A
Cited
US4077418A
Cited
US4026313A
Cited
US4156433A
Cited
US4262460A
Cited
US4243339A
Cited
US4472075A
Cited
US4548125A
Cited
US4431331A
Cited
US4607656A
Cited
US4667577A
Cited
US4808023A
Cited
US4615402A
Cited
US4766980A
Cited
US4689932A
Cited
US4846204A
Cited
US4684280A
Cited
US4872361A
Cited
US4779635A
Cited
US4924896A
Cited
US4844109A
Cited
US4885891A
Cited
US4947884A
Cited
US4929113A
Cited
US5035253A
Cited
US5244001A
Cited
US5421356A
Cited
US5275188A
Cited
US5274980A
Cited
US5361794A
Cited
US5423341A
Cited
US5485863A
Cited
US5490533A
Cited
US5387048A
Cited
US5444946A
Cited
US5351701A
Cited
US5490532A
Cited
US5511572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-03-14 | 2003-09-13 | 2004-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-03-14 | 2007-09-13 | 2008-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-03-14 | 2011-09-13 | 2012-03-14 | $7700.00 | Window Closed / Lapsed |