Patent US3599813A successfully refreshed from Google Patents.
US3599813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rollover safety structure for articulated loaders
Assignee: Caterpillar Inc
•
Filing: 1970-04-13
•
Granted: 1971-08-17
•
Expires: 1990-04-13
Abstract
Abstract In an articulated loader vehicle having a rear frame carrying the engine and operator''s station and having a front frame with spaced upright towers supporting lift arms and a bucket and having means for pivoting one frame relative to the other for steering purposes, rollover protection for the operator is provided by a post extending upwardly from each loader tower to a rectangular top member which is cantilevered back over the operator''s station. This disposition of the rollover structure on the front frame towers maximizes strength without interfering with other loader components and avoids interference with the operator''s view of the direction of travel of the vehicle and the bucket during turning.
Inventors
- 👤 Clayton J Totz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:57
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/24; B; B60; B60R; B60R21/00; B60R21/02; B60R21/11; B62; B62D; B62D53/00; B62D53/02; E02F3/00; E02F3/04; E02F3/28; E02F3/34; E02F3/3405; E02F3/3408; E02F9/08; E02F9/0841
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
103 words
Rollover safety structure for an articulated loader vehicle having a rear frame carrying an operator''s station and a front frame supporting a bucket for carrying material wherein said front and rear frames are joined by means providing for forced relative pivoting therebetween about a vertical axis to steer said vehicle, said rollover structure comprising: a pair of spaced-apart post members each having a base secured to one side of said front frame and extending in a substantially upward direction therefrom, and a top member extending between said pair of post members and extending rearwardly therefrom over said operator''s station of said rear frame.
Claim 2
Dependent Claim
103 words
Rollover safety structure for an articulated loader vehicle having a rear frame carrying an operator''s station and a front frame supporting a bucket for carrying material wherein said front and rear frames are joined by means providing for forced relative pivoting therebetween about a vertical axis to steer said vehicle, said rollover structure comprising: a pair of spaced-apart post members each having a base secured to one side of said front frame and extending in a substantially upward direction therefrom, and a top member extending between said pair of post members and extending rearwardly therefrom over said operator''s station of said rear frame.
Claim 3
Dependent Claim
84 words
The combination defined in claim 1 wherein said front frame of said articulated loader vehicle has a pair of upwardly extending loader tower members disposed one at each side of said frame for supporting said bucket and wherein said bucket is fastened to said front frame by a pair of lift arms coupled to the upper ends of said loader towers by pivot axles, wherein each of said post members is secured to the upper end of a separate one of said loader towers.
Claim 4
Dependent Claim
40 words
The combination defined in claim 2 wherein said pivot axles which couple said lift arms to said loader towers extend through the associated one of said post members to strengthen the fastening of said post members to said loader towers.
Claim 5
Dependent Claim
29 words
The combination defined in claim 1 wherein said post members have openings therein enabling the operator to view regions forwardly and sidewardly of said bucket through said post members.
Claim 6
Dependent Claim
60 words
The combination defined in claim 1 wherein said operator''s station is situated substantially above said vertical pivot axis between said front and rear frames and wherein said top member of said rollover protective structure extends above said pivot axis whereby said top member remains above said operator''s station irrespective of angling of said front frame relative to said back frame.
Claim 7
Dependent Claim
125 words
A rollover safety structure for attachment to an articulated loader which has a rear frame supporting an operator''s station and a front frame which may be pivoted relative to the rear frame and which carries a pair of spaced-apart loader towers for supporting a bucket, comprising a pair of spaced-apart parallel post members each having means at the base thereof for attachment to a separate one of said loader towers to support said safety structure thereon with said post members extending upwardly from said loader towers when attached thereon, and a top member extending between said post Members and being angled with respect thereto to extend back over said operator''s station of said rear frame when said safety structure is attached to said front frame.
Claim 8
Dependent Claim
125 words
A rollover safety structure for attachment to an articulated loader which has a rear frame supporting an operator''s station and a front frame which may be pivoted relative to the rear frame and which carries a pair of spaced-apart loader towers for supporting a bucket, comprising a pair of spaced-apart parallel post members each having means at the base thereof for attachment to a separate one of said loader towers to support said safety structure thereon with said post members extending upwardly from said loader towers when attached thereon, and a top member extending between said post Members and being angled with respect thereto to extend back over said operator''s station of said rear frame when said safety structure is attached to said front frame.
References Cited (Backward Citations)
US2732963A
Cited
US3443833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |