US3697206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Press for rebuilding of tires
Assignee: Individual
•
Filing: 1971-03-10
•
Granted: 1972-10-10
•
Expires: 1991-03-10
Abstract
Abstract The retreading of automotive tires may be effected by means of a movable frame, guided on rails, supporting the upper half of a tire mold and a single set of controlling means for a plurality of press molds.
Inventors
- 👤 Pericle Bonazzi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:12
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/0601; B29D30/0662; B29D30/52; B29D30/54
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
128 words
Rail-guided, movable device for use in the press-mold retreading of tires, comprising: guide rails, a bridge frame having wheels to run on said guide rails, a cross member mounted on said frame and capable of vertical displacement, an upper half of the press-mold supported on said cross member, an expandable annular means mounted on said cross member for engaging and supporting said upper half of said press-mold, screw stays mounted on said cross member for threaded portions thereon for locking and unlocking said upper half of said press-mold, a fixed lower half of the press-mold supported on bases aligned along the path of said guide rails, said frame being capable of moving along said guide rails to come into juxtaposed engagement with said lower half of said press-mold.
Claim 2
Dependent Claim
128 words
Rail-guided, movable device for use in the press-mold retreading of tires, comprising: guide rails, a bridge frame having wheels to run on said guide rails, a cross member mounted on said frame and capable of vertical displacement, an upper half of the press-mold supported on said cross member, an expandable annular means mounted on said cross member for engaging and supporting said upper half of said press-mold, screw stays mounted on said cross member for threaded portions thereon for locking and unlocking said upper half of said press-mold, a fixed lower half of the press-mold supported on bases aligned along the path of said guide rails, said frame being capable of moving along said guide rails to come into juxtaposed engagement with said lower half of said press-mold.
Claim 3
Dependent Claim
56 words
The device as claimed in claim 1, wherein said expandable annular means comprises a cylinder with respective pistons, positioned radially in supporting means attached to said cross member, a coupling lever cooperating with said piston, and horizontally displaceable annular segments engaged in seats provided on a flange integrally provided on said upper half of said press-mold.
Claim 4
Dependent Claim
66 words
The device as claimed in claim 1, wherein said bridge frame is provided with cylinders and pistons means capable of angular displacement to thread and unthread the said screw stays in order to lock and respectively unlock said upper and lower halves of said press-mold to and from each other, said screw stays being engaged at their lower extremities to said lower half of said press-mold.
Claim 5
Dependent Claim
52 words
The device as claimed in claim 1, wherein said screw stay comprises a vertically rotatable mandrel, controlled by means of a motor-reducing means, axially displaceable by means of piston action, and having a puller cooperating with a radial tappet, said tappet being integrally connected with the threaded portion of said screw stay.
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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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |