GB424451A
Expired / Lapsed
GB
⏱️ 0.0 years remaining
Improvements in self-closing valves for footballs, beach balls and the like
Assignee: Individual
•
Filing: 1934-02-16
•
Granted: —
•
Expires: 1954-02-16
Abstract
Abstract 424,451. Inflating-valves. ROTHWELL, J., 21, East Street, Bury. Feb. 16, 1934, No. 5144. [Class 135] A rubber inflating-valve for footballs &c. having an attaching flange c, is made by slitting the lower ends b<1> of the edges of the tube a previously moulded to flattened form, and then cementing the faces of these edges together so as to leave a central passage. Instead of a single flange c, two discs, fitting inside and outside the wall of the ball, may be used.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-10-23 00:42
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/20; F16K15/202
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.