US3727975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folding stadium chair
Assignee: Individual
•
Filing: 1971-06-23
•
Granted: 1973-04-17
•
Expires: 1991-06-23
Abstract
Abstract A stadium chair has spaced pairs of vertical side members with attachment means at the bottom of each side member pair for attachment to the riser face or the horizontal platform of the stadium row. The vertical members support pivot plates at the level of the seat. Fiberglass, plastic or cast or forged metal seat surfaces are attached to the pivots. The rear edge of each seat is weighted. Each vertical side member pair has a registry hub that includes a pair of arcuately spaced stops against which resilient locators on the seat register to predetermine occupied and unoccupied seat attitudes. A back rest is attached to spaced support members extending from the vertical side members. Preferably the registry hubs are compound such that side members between adjacent seats accommodate pivots for both seats.
Inventors
- 👤 P Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:54
CPC Classifications
A; A47; A47C; A47C1/00; A47C1/12; A47C1/121
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
163 words
A folding chair comprising side members spaced apart to define the chair width, attachment means at the bottom of each side member, a chair back secured between the side members, a chair seat, a seat weight at the back of the seat, a seat support bracket at each side of the seat adjacent a side member, means securing the seat to the bracket; a cylindrical shroud projecting from each side member toward a seat, a registry stop in the shroud adapted to register the seat support bracket in occupied position, a registry stop in the shroud adapted to register the seat support bracket in unoccupied position, a pivot in each support bracket, a bushing journalling each pivot within the shroud; and contact members on each seat support bracket adapted to extend into the shroud to contact a registry stop, each of said contact members including a contact guide, a contact within the guide, and a spring biasing the contact toward a registry stop.
Claim 2
Dependent Claim
163 words
A folding chair comprising side members spaced apart to define the chair width, attachment means at the bottom of each side member, a chair back secured between the side members, a chair seat, a seat weight at the back of the seat, a seat support bracket at each side of the seat adjacent a side member, means securing the seat to the bracket; a cylindrical shroud projecting from each side member toward a seat, a registry stop in the shroud adapted to register the seat support bracket in occupied position, a registry stop in the shroud adapted to register the seat support bracket in unoccupied position, a pivot in each support bracket, a bushing journalling each pivot within the shroud; and contact members on each seat support bracket adapted to extend into the shroud to contact a registry stop, each of said contact members including a contact guide, a contact within the guide, and a spring biasing the contact toward a registry stop.
Claim 3
Dependent Claim
34 words
A folding chair in accordance with claim 1 further comprising a flange on each support bracket adapted to extend within each side member shroud adjacent thereto so as to inhibit entry of foreign matter.
Claim 4
Dependent Claim
31 words
A folding chair in accordance with claim 1 further comprising a pivot boss central of each shroud securing the pivot bushing, and means securing the pivot in the seat support bracket.
Claim 5
Dependent Claim
72 words
A folding chair in accordance with claim 1 wherein eAch registry stop comprises a first rib extending from the wall of said shroud inwardly, a second rib extending inwardly from the wall of the shroud to join the first rib at its inward termination, each rib of one registry stop being substantially parallel to a rib of the other registry stop, and both ribs of a registry stop defining a dihedral angle.
Claim 6
Dependent Claim
34 words
A folding chair in accordance with claim 4 further comprising a flange on each support bracket adapted to extend within each side member shroud adjacent thereto so as to inhibit entry of foreign matter.
References Cited (Backward Citations)
US278691A
Cited
US424713A
Cited
US562901A
Cited
FR599329A
Cited
US1973178A
Cited
US2000172A
Cited
US2913039A
Cited
US3638998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |