Patent EP0488246A2 successfully refreshed from Google Patents.
Patent US4332287A successfully refreshed from Google Patents.
US4332287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rolling safety doors
Assignee: DYNAFLAIR Corp CANADA Inc 108 NORDIC AVENUE POINTE-CLAIRE QUEBEC H9R 3YE
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Filing: 1980-05-13
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Granted: 1982-06-01
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Expires: 2000-05-13
Abstract
Abstract There is provided a rolling door construction which includes a plurality of spaced-apart elongated members, each having opposed longitudinal slots, and each slot in section having an enlarged internal portion and a neck portion which is narrower than the internal portion. The construction further includes a plurality of light-transmitting panels of uniform thickness, each panel having opposing side edges and opposing end edges, the two opposing side edges of each panel being received in the slots in two adjacent elongated members. There is also provided a plurality of spacer plate members, each spacer plate member having opposed edge beads received in the internal portions of two slots, the beads being too large to be withdrawn through the neck portions of the slots. The spacer plate members are arranged so that two of them are adjacent the end edges of each panel. Means are provided for restraining movement of the panels and the plate members longitudinally of the elongated members.
Inventors
- 👤 Rudolf Stolpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:46
CPC Classifications
E; E06; E06B; E06B9/00; E06B9/02; E06B9/08; E06B9/11
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
144 words
A rolling door construction comprising: a plurality of spaced-apart elongated members, each member having opposed longitudinal slots, each slot in section having an enlarged internal portion and a neck portion narrower than said internal portion, a plurality of light-transmitting panels of uniform thickness, each panel having opposing side edges and opposing end edges, the two opposing side edges of each panel being received in the slots in two adjacent elongated members, a plurality of spacer plate member, each spacer plate member having opposed edge beads received in the internal portions of two slots, the beads being too large to be withdrawn through the neck portions of the slots, the spacer plate members being arranged so that two of them are adjacent the end edges of each panel, and means for restraining movement of the panels and the plate members longitudinally of the elongated members.
Claim 2
Dependent Claim
144 words
A rolling door construction comprising: a plurality of spaced-apart elongated members, each member having opposed longitudinal slots, each slot in section having an enlarged internal portion and a neck portion narrower than said internal portion, a plurality of light-transmitting panels of uniform thickness, each panel having opposing side edges and opposing end edges, the two opposing side edges of each panel being received in the slots in two adjacent elongated members, a plurality of spacer plate member, each spacer plate member having opposed edge beads received in the internal portions of two slots, the beads being too large to be withdrawn through the neck portions of the slots, the spacer plate members being arranged so that two of them are adjacent the end edges of each panel, and means for restraining movement of the panels and the plate members longitudinally of the elongated members.
Claim 3
Dependent Claim
29 words
The invention claimed in claim 1, in which said last-mentioned means comprises metal screws threaded into the internal portions of the slots at the ends of the elongated members.
Claim 4
Dependent Claim
12 words
The invention claimed in claim 1, in which the panels are rectangular.
Claim 5
Dependent Claim
18 words
The invention claimed in claim 1, in which the panels are rectangular and are of transparent plastic material.
Claim 6
Dependent Claim
72 words
The invention claimed in claim 1, which includes a hinge member having an elongated tubular portion adapted to receive a hinge pin, and a web portion projecting radially from the tubular portion, the web portion having remote from the tubular portion a bead which is received in the internal portion of a slot of one of the elongated members, with the web portion passing through the neck portion of the last-mentioned slot.
Claim 7
Dependent Claim
25 words
The invention claimed in claim 5, in which the hinge member is pivotally hinged to a structural member of greater strength than the elongated members.
Claim 8
Dependent Claim
85 words
The invention claimed in claim 1, claim 5 or claim 6, in which the elongated members are all of the same length, the internal portion of each slot being of circular section, the neck portion of each slot being wider than the thickness of the panels and the thickness of the plate members, to allow a degree of swivel to take place between each elongated member and the elements received in each of its two slots, the panels being rectangular and being of plastic material.
References Cited (Backward Citations)
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Cited
US2951533A
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US2956314A
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US3419064A
Cited
US3670797A
Cited
US4120340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |