US3578059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bead spreader for truck tires
Assignee: McNeil Corp
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Filing: 1968-11-04
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Granted: 1971-05-11
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Expires: 1988-11-04
Abstract
Abstract A device for expanding the beads of tubeless tires so as to facilitate filling them with air under pressure comprises a flexible strap that may be looped around the outside of the tire and a device for receiving the ends of the strap and applying tension to the strap. The device preferably includes a frame having a guide neck with rollers through which the strap ends extend with one end being anchored to the frame and the other end extending through a ratchet takeup mechanism mounted on the frame, tension being applied by means of a hydraulic ram assembly connected through rollers to the two end sections of the strap. The hydraulic assembly has a special relief valve to preclude the application of excessive pressure.
Inventors
- 👤 James R Uhen
- 👤 David L Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:52
CPC Classifications
B; B60; B60C; B60C25/00; B60C25/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
249 words
A device for exerting radial pressure on a circular object such as a truck tire comprising a frame including a neck portion, a flexible strap in loop form having a loop section located on one side of the neck portion and two end sections extending through the neck portion, a strap anchor on the frame, one of said end sections being secured to said anchor, a strap takeup device for varying the effective length of the strap and the size of the loop section and including ratchet means to prevent enlarging of the loop section under pressure, a hydraulic jack supported on the frame having a ram for applying tension to the strap end sections so as to reduce the size of the loop section and thereby apply radial pressure to an object within the loop section, a head assembly mounted on said ram and including a pair of rollers, said end sections extending through said head assembly and engaging respectively one of said rollers, said frame including a base shoe extending from the neck portion side of the frame for reaction against and support on said object, said frame including a first pair of upright members on said frame having rollers extending between them to form said neck portion and a second pair of upright members having a rod extending between them to form said anchor, said pairs of upright members being substantially parallel to the axis of the jack and located on opposite sides of the jack.
Claim 2
Independent Claim
249 words
A device for exerting radial pressure on a circular object such as a truck tire comprising a frame including a neck portion, a flexible strap in loop form having a loop section located on one side of the neck portion and two end sections extending through the neck portion, a strap anchor on the frame, one of said end sections being secured to said anchor, a strap takeup device for varying the effective length of the strap and the size of the loop section and including ratchet means to prevent enlarging of the loop section under pressure, a hydraulic jack supported on the frame having a ram for applying tension to the strap end sections so as to reduce the size of the loop section and thereby apply radial pressure to an object within the loop section, a head assembly mounted on said ram and including a pair of rollers, said end sections extending through said head assembly and engaging respectively one of said rollers, said frame including a base shoe extending from the neck portion side of the frame for reaction against and support on said object, said frame including a first pair of upright members on said frame having rollers extending between them to form said neck portion and a second pair of upright members having a rod extending between them to form said anchor, said pairs of upright members being substantially parallel to the axis of the jack and located on opposite sides of the jack.
Claim 3
Dependent Claim
33 words
A device as set forth in claim 1 including a pair of brace members extending between said first and second pair of upright members, said takeup device being mounted on said brace members.
Claim 4
Independent Claim
180 words
A device for exerting radial pressure on a circular object such as a truck tire comprising a frame including a neck portion, a flexible strap in loop form having a loop section located on one side of the neck portion and two end sections extending through the neck portion, a strap anchor on the frame spaced from the neck portion, one of said end sections being secured to said anchor, a strap takeup device on the frame spaced from the neck portion for varying the effective length of the strap and the size of the loop section, the other end section being secured to the takeup device, and fluid pressure means on the frame having a ram engaging at least one end section for applying tension to the strap end section so as to reduce the size of the loop section and thereby apply radial pressure to an object within the loop section, said pressure means being disposed so that the ram moves transversely of the length of the end section and substantially tangentially with respect to the loop section.
Claim 5
Independent Claim
180 words
A device for exerting radial pressure on a circular object such as a truck tire comprising a frame including a neck portion, a flexible strap in loop form having a loop section located on one side of the neck portion and two end sections extending through the neck portion, a strap anchor on the frame spaced from the neck portion, one of said end sections being secured to said anchor, a strap takeup device on the frame spaced from the neck portion for varying the effective length of the strap and the size of the loop section, the other end section being secured to the takeup device, and fluid pressure means on the frame having a ram engaging at least one end section for applying tension to the strap end section so as to reduce the size of the loop section and thereby apply radial pressure to an object within the loop section, said pressure means being disposed so that the ram moves transversely of the length of the end section and substantially tangentially with respect to the loop section.
Claim 6
Dependent Claim
41 words
A device as set forth in claim 3 wherein said ram includes a head assembly having a pair of axially spaced rollers, said end sections passing respectively over separate of said rollers whereby the ram applies force to both end sections.
Claim 7
Dependent Claim
66 words
A device as set forth in claim 3 wherein said frame includes a base shoe extending from the neck portion side of the frame and adapted to engage the outside of the loop section of the strap, said shoe being shaped to engage the outside of the circular object and react against it through the strap when said strap tightening force is applied to the ram.
References Cited (Backward Citations)
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Cited
US2149395A
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US2526055A
Cited
US2778415A
Cited
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Cited
US3180623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |