US3917310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible canopy assembly
Assignee: Caterpillar Inc
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Filing: 1974-11-19
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Granted: 1975-11-04
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Expires: 1994-11-19
Abstract
Abstract This invention relates to a collapsible canopy assembly, which is a protective device mounted on an operator''s station on a construction or earth-moving machine in which the operator actuates the machine sitting within the protective device, which comprises a roll-over protective structure, a canopy top and a head guard for the operator. Because of the projection of the protective device above the operator''s station the height of the machine happens to exceed the limitation of height under traffic laws when it is loaded on a trailer for transfer. And in operating the machine in a tunnel, the protective device will also be a stumbling block to a ''''jumbo drill.'''' In the present invention, the protective device is made collapsible at any time be it in violation of traffic laws or transfer of the machine in a tunnel. Further not only is the device easily collapsible by one operator but also raising or collapsing thereof is safely carried out with no injuries to the operator.
Inventors
- 👤 Yoshiji Mitsuishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:49
CPC Classifications
B; B62; B62D; B62D33/00; B62D33/06; B62D33/063; B62D33/067; B60; B60R; B60R21/00; B60R21/02; B60R21/11; E; E02; E02F; E02F9/00; E02F9/16; E02F9/163
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
153 words
A collapsible canopy assembly for protecting an operator''s station of a vehicle comprising a roof, a pair of normally upright transversely spaced front support means each having an upper end thereof pivotally connected to said roof and a lower end pivotally connected to the vehicle, a pair of normally upright transversely spaced rear support means spaced longitudinally from said front support means and each having an upper end thereof pivotally connected to said roof and a lower end pivotally connected to the vehicle to form a parallelogram-type linkage with said roof and said front support means, at least one stay diagonally disposed and pivotally interconnected between said roof and adjacent to a lower end of one of said front and rear support means, said stay comprising adjustment means including at least one shaft threadably mounted in a cylinder for selectively extending or retracting said stay upon relative rotation of said shaft and cylinder.
Claim 2
Dependent Claim
153 words
A collapsible canopy assembly for protecting an operator''s station of a vehicle comprising a roof, a pair of normally upright transversely spaced front support means each having an upper end thereof pivotally connected to said roof and a lower end pivotally connected to the vehicle, a pair of normally upright transversely spaced rear support means spaced longitudinally from said front support means and each having an upper end thereof pivotally connected to said roof and a lower end pivotally connected to the vehicle to form a parallelogram-type linkage with said roof and said front support means, at least one stay diagonally disposed and pivotally interconnected between said roof and adjacent to a lower end of one of said front and rear support means, said stay comprising adjustment means including at least one shaft threadably mounted in a cylinder for selectively extending or retracting said stay upon relative rotation of said shaft and cylinder.
Claim 3
Dependent Claim
30 words
The canopy assembly of claim 1 further comprising lever means attached to said cylinder for selectively rotating the same relative to said shaft for selectively extending or retracting said stay.
Claim 4
Dependent Claim
21 words
The canopy assembly of claim 1 wherein a pair of said shafts are threadably mounted in opposite ends of said cylinder.
Claim 5
Dependent Claim
100 words
The canopy assembly of claim 1 further comprising a second stay, disposed on an opposite side of said canopy assembly from said first-mentioned stay, diagonally disposed and pivotally interconnected between said roof and adjacent to a lower end of the same one of said front and rear support means whereat said first-mentioned stay is pivotally connected, said second stay comprising a slide shaft reciprocally mounted in a cylinder and a retaining means normally releasably disposed in a common bore formed transversely through said slide shaft and said cylinder for preventing relative movement therebetween when said second stay is fully extended.
Claim 6
Dependent Claim
34 words
The canopy assembly of claim 1 wherein each of said front and rear support means comprises a pair of laterally spaced supports each having a lower end thereof pivotally mounted on a support bracket.
Claim 7
Dependent Claim
19 words
The canopy assembly of claim 5 wherein each one of said support brackets is secured on a construction vehicle.
Claim 8
Dependent Claim
41 words
The canopy assembly of claim 1 wherein an upper end of said stay is pivotally mounted on a bracket secured to said roof, on a common pivot axis pivotally connecting an upper end of said rear support means to said roof.
Claim 9
Dependent Claim
32 words
The canopy assembly of claim 7 wherein a lower end of said stay is pivotally mounted on a support bracket having the lower end of said front support means pivotally mounted thereon.
Claim 10
Dependent Claim
26 words
The canopy assembly of claim 1 wherein said rear support means further comprises a horizontally disposed stay secured between a pair of vertically disposed supports thereof.
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) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |