US3556193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for loosening the beads of tires from a wheel rim
Assignee: Individual
•
Filing: 1968-01-23
•
Granted: 1971-01-19
•
Expires: 1988-01-23
Abstract
Abstract The present device is for separating the beads of a tire from a wheel rim and after one side of the rim is attached to a fixed jaw, a mobile jaw grips the opposite side of the rim whereby the rim is held between both jaws and pressure plates are brought to bear on both sides of the tire near the beads for pressing the tire beads from the rim.
Inventors
- 👤 Victor Duquesne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:09
CPC Classifications
B; B60; B60C; B60C25/00; B60C25/01; B60C25/02; B60C25/025; B60C25/05; B60C25/132
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
184 words
Device for loosening the tire beads from a wheel rim, comprising a fixed jaw capable of holding one side of the rim, a mobile pressure plate adjacent said fixed jaw and capable of exerting a pressure on the part of the tire bead adjacent to said fixed plate, means for moving said pressure plate toward the tire, a mobile jaw facing said fixed jaw, whereby the rim can be gripped between said jaws, a second mobile pressure plate facing said first pressure plate and capable of exerting a pressure on the part of the bead adjacent to the edge of said mobile jaw; means for moving said mobile jaw toward said fixed jaw, means slideably connecting said mobile jaw and said second pressure plate for moving said second pressure plate towards the wheel with said mobile jaw, means for further moving said second plate relative to said first pressure plate when the rim is clamped between the jaws in order to loosen the tire beads from the rim, and means to return both said pressure plates and the mobile jaw to their initial position.
Claim 2
Dependent Claim
184 words
Device for loosening the tire beads from a wheel rim, comprising a fixed jaw capable of holding one side of the rim, a mobile pressure plate adjacent said fixed jaw and capable of exerting a pressure on the part of the tire bead adjacent to said fixed plate, means for moving said pressure plate toward the tire, a mobile jaw facing said fixed jaw, whereby the rim can be gripped between said jaws, a second mobile pressure plate facing said first pressure plate and capable of exerting a pressure on the part of the bead adjacent to the edge of said mobile jaw; means for moving said mobile jaw toward said fixed jaw, means slideably connecting said mobile jaw and said second pressure plate for moving said second pressure plate towards the wheel with said mobile jaw, means for further moving said second plate relative to said first pressure plate when the rim is clamped between the jaws in order to loosen the tire beads from the rim, and means to return both said pressure plates and the mobile jaw to their initial position.
Claim 3
Dependent Claim
47 words
Device as defined in claim 1, including a pair of supports, a pair of pivots on said supports pivotally supporting the previously described elements whereby the device can be pivoted to position said jaws and said pressure plates of an operative height with respect to the wheel.
Claim 4
Dependent Claim
117 words
Device as defined in claim 1, including a pneumatic cylinder, a piston slideably positioned in said cylinder, a rod on said piston fastened to said mobile jaw whereby the rim can be clamped between said piston rod and said jaws, a pair of pistons, a second cylinder having said pair of pistons slideably positioned therein for operating in opposite directions, a piston rod on each of said pair of pistons, an arm carried on one of said second piston rods, one of said pressure plates fixed on said arm, a second arm carrying a second of said pressure plates and a system of rods operatively connecting said second arm to the other of said second piston rods.
Claim 5
Dependent Claim
74 words
Device as defined in claim 3, in which a bar is connected to an end of the piston rod acting directly on said arm carrying said pressure plate, a sleeve sliding on the piston rod carrying the mobile jaw bearing against a shoulder provided on said piston rod, which shoulder only can move said sleeve and thus said pressure plate in the direction of the wheel and said bar is attached to said sleeve.
Claim 6
Dependent Claim
20 words
Device as defined in claim 3, in which the arms of said pressure plates are pivotally fastened to said bars.
Claim 7
Dependent Claim
61 words
Device as defined in claim 3, in which at least one traction spring is provided urging both said pistons in said second cylinder together, a second traction spring provided between the frame of the device and said system of rods controlling said second pressure plate whereby said piston which controls said system of rods is subjected to an additional resilient pressure.
Claim 8
Dependent Claim
68 words
Device as defined in claim 3, including a pair of supports, pivots on said supports supportiNg the aforementioned elements whereby the device can be tipped, a handle for tipping said elements and fixed on an axis, a rod, a spring tending to bring said rod to bear against said handle, a valve for controlling said cylinders and an end of said rod being positioned for operating said valve.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |