US3739662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retread tire marking method and apparatus
Assignee: MATTHEWS J AND CO
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Filing: 1971-01-15
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Granted: 1973-06-19
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Expires: 1991-01-15
Abstract
Abstract A method and apparatus for application of interchangeable markings on existing tire retreading molds is disclosed wherein a slotted guide member is first clamped to a mold and a milling cutter in a hand held motor driven tool is first run back and forth in the slot to cut a flat surface in the mold. A jig which has a snug fit in the slot is placed in the slot and spaced holes are drilled to a slight depth in the mold. The guide member and jig are then removed, internally threaded plugs are driven into the holes that have been so drilled and a screw is entered into each plug. A metal tag which has previously been embossed with the required information has slotted ends that may be inserted under the heads of these screws is put in place on the flat surface and the screws are tightened down. When the mold is used the indicia on the tag is molded into the retread rubber. To replace a tag, the screws are partly unscrewed, the old tag removed, and the replacement is slipped into place.
Inventors
- 👤 E Windelman
- 👤 P Fitzsimmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:47
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/84; B29C66/861; B29C65/00; B29C65/02; B29C65/18; B29C66/50; B29C66/51; B29C66/53; B29C66/532; B29C66/70; B29C66/71; B29D; B29D30/00; B29D30/06; B29D30/0601; B29D30/0662; B29D30/52; B29D30/54; B29C37/00; B29C2037/80; B29C33/00; B29C33/42; B29C33/424; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29K; B29K2021/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49947; Y10T29/49948; Y10T29/49963
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
176 words
The method of preparing a tire recapping mold to mold characters in the retread rubber which characters will differ from time-to-time, said method comprising: a. clamping an elongated tool guide onto the mold surface in a Location where a side margin of retread rubber will be applied to a tire, said guide having a slot therein running lengthwise thereof, b. entering an end-cutting milling cutter which has a cylindrical shank in the slot in said guide while the cutter is mounted in and rotated by a motor driven hand tool and moving the cutter back and forth along the guide while its end is cutting the surface of the mold and forming thereby an elongated flat shallow countersunk strip in said margin molding surface of the mold, c. locating a machine screw-receiving threaded hole in said flat strip near each end thereof, and d. forming a sheet metal tag with debossed indicia thereon and securing it on said flat strip by machine screws entered in said threaded holes and which pass through openings in the tag.
Claim 2
Independent Claim
176 words
The method of preparing a tire recapping mold to mold characters in the retread rubber which characters will differ from time-to-time, said method comprising: a. clamping an elongated tool guide onto the mold surface in a Location where a side margin of retread rubber will be applied to a tire, said guide having a slot therein running lengthwise thereof, b. entering an end-cutting milling cutter which has a cylindrical shank in the slot in said guide while the cutter is mounted in and rotated by a motor driven hand tool and moving the cutter back and forth along the guide while its end is cutting the surface of the mold and forming thereby an elongated flat shallow countersunk strip in said margin molding surface of the mold, c. locating a machine screw-receiving threaded hole in said flat strip near each end thereof, and d. forming a sheet metal tag with debossed indicia thereon and securing it on said flat strip by machine screws entered in said threaded holes and which pass through openings in the tag.
Claim 3
Dependent Claim
55 words
The method defined in claim 1 in which said tags are formed with a notch at each end positioned to be slipped under the heads of machine screws previously screwed into said holes and not completely screwed down and then tightening the screws to confine the notched ends of the tag under the screw heads.
Claim 4
Dependent Claim
131 words
Apparatus for preparing a tire recapping mold to receive an indicia forming tag comprising: a. an elongated tool guide having a slot extending lengthwise therealong from a location near one end of the guide to a location near the other end, b. means for clamping said guide to a tire mold in a position where the margin of a tread recap will be vulcanized to the original tire carcass, c. an end-milling cutter having a cylindrical shank of a diameter to have a working fit in said slot, and d. a power driven portable hand tool having a chuck for receiving and rotating the milling cutter while the cutter is moved back and forth along said guide with its cutting end cutting a flat strip in the surface of the mold.
Claim 5
Dependent Claim
131 words
Apparatus for preparing a tire recapping mold to receive an indicia forming tag comprising: a. an elongated tool guide having a slot extending lengthwise therealong from a location near one end of the guide to a location near the other end, b. means for clamping said guide to a tire mold in a position where the margin of a tread recap will be vulcanized to the original tire carcass, c. an end-milling cutter having a cylindrical shank of a diameter to have a working fit in said slot, and d. a power driven portable hand tool having a chuck for receiving and rotating the milling cutter while the cutter is moved back and forth along said guide with its cutting end cutting a flat strip in the surface of the mold.
Claim 6
Dependent Claim
67 words
Apparatus for preparing a tire recapping mold as defined in claim 3 wherein there is a jig removably fitted in said slot having a drill bit guiding hold therethrough near each end thereof whereby holes may be exactly located in the flat strip and drilled after it has been formed in the mold and before said guide is released from the mold to which it is clamped.
Claim 7
Dependent Claim
49 words
Apparatus for preparing a tire mold as defined in claim 3 wherein said means for clamping the guide to the tire mold comprises a clamp having two opposed jaws with means for moving them toward and away from each other, said guide being carried on one of said jaws.
Claim 8
Dependent Claim
56 words
Apparatus for preparing a tire mold as defined in claim 3 wherein said means for clamping the guide to the tire mold comprises a clamp having two opposed jaws with means for moving them toward and away from each other, said guide being pivotally carried on one of said jaws for rotation about its longitudinal axis.
Claim 9
Dependent Claim
83 words
Apparatus for preparing a tire mold as defined in claim 3 wherein said means for clamping the guide to the mold comprises a tool having opposed jaws arranged to clamp a portion of a tire mold between them and remain clamped until the jaws are manually released, one of said jaws having spaced lugs at the free edge thereof, the guide being positioned between and pivotally secured to said lugs for rotatable adjustment in the jaw about the longitudinal axis of the guide.
Claim 10
Dependent Claim
26 words
The method defined in claim 1 wherein said sheet metal tag is slightly shorter in length than the flat strip area and slightly narrower in width.
References Cited (Backward Citations)
US19496A
Cited
US3380121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |