US4324412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite shield-step
Assignee: Caterpillar Inc
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Filing: 1980-03-24
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Granted: 1982-04-13
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Expires: 2000-03-24
Abstract
Abstract A composite shield-step (10) is provided for an articulated log skidder of the type which has fluid lines (13) exposed through steering cylinder openings (20) to damage from logs and limbs in a logging environment. The composite shield-step (10) provides a first member (12) which is connected to the log skidder about the cylinder opening (20). The first member (12) has an opening (15) which is vertically offset from the cylinder opening (20) so that the fluid lines (13) are visible through both openings (15,20) but, being offset, logs and limbs do not have direct access to the fluid lines (13). A step (23) is formed on the first member (12) for easy access to the log skidder for operation.
Inventors
- 👤 Bernard J. Wulff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:43
CPC Classifications
B; B60; B60R; B60R3/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
174 words
A composite shield-step (10) in combination with an articulated vehicle of the type having a frame (11) with a steering cylinder opening (20) through which vulnerable vehicle components (13) are exposed to damage in the work environment of the vehicle, said shield-step (10) comprising: a first member (12) having an opening (15) therein with a lower side and positioned about the steering cylinder opening (20) with the first member opening (15) vertically offset from the steering cylinder opening with said vulnerable vehicle components being visible through the openings (20,15) wherein the first member (12) has a general "U" configuration, said first member (12) being mounted externally on said frame (11); a first step (23) formed on the first member (12), said first step (23) constituting an edge of said first member (12) which bounds the lower side of said first member's opening (15); and a second step (14) formed by at least one rigid elongate member (25) extending between the legs of the "U" and positioned at the top of the first member (12).
Claim 2
Dependent Claim
174 words
A composite shield-step (10) in combination with an articulated vehicle of the type having a frame (11) with a steering cylinder opening (20) through which vulnerable vehicle components (13) are exposed to damage in the work environment of the vehicle, said shield-step (10) comprising: a first member (12) having an opening (15) therein with a lower side and positioned about the steering cylinder opening (20) with the first member opening (15) vertically offset from the steering cylinder opening with said vulnerable vehicle components being visible through the openings (20,15) wherein the first member (12) has a general "U" configuration, said first member (12) being mounted externally on said frame (11); a first step (23) formed on the first member (12), said first step (23) constituting an edge of said first member (12) which bounds the lower side of said first member's opening (15); and a second step (14) formed by at least one rigid elongate member (25) extending between the legs of the "U" and positioned at the top of the first member (12).
Claim 3
Dependent Claim
26 words
The combination as set forth in claim 1, wherein the first member opening (15) is positioned at a lower elevation than the steering cylinder opening (20).
Claim 4
Dependent Claim
68 words
The combination as set forth in claim 1, wherein the first member (12) partially covers the steering cylinder opening (20) leaving a selected portion (21) of said opening (20) unshielded, said selected portion (21) being of a size sufficient for visually inspecting said vulnerable vehicle components (13) through said selected portion (21) without substantially increasing the exposure of said vulnerable vehicle components (13) to environmental work hazards. PG,14
Claim 5
Dependent Claim
62 words
The combination as set forth in claim 1, wherein the first member (12) partially covers the steering cylinder opening (20) leaving a selected portion (21) of said opening (20) unshielded, said selected portion (21) forming peephole (21) for visually inspecting and vulnerable vehicle components (13) through said selected portion (21) with the aid of light beam through the first member opening (15).
Claim 6
Dependent Claim
30 words
The combination as set forth in claim 1, including: a second step (14) formed on the first member (12) and being at a higher elevation than said first step (23).
Claim 7
Dependent Claim
23 words
The combination as set forth in claim 1, including: a second step (14) formed by a grate positioned atop the first member (12).
Claim 8
Dependent Claim
98 words
The combination as set forth in claim 1, including: a protective shield (24) connected to the first member (12) and positioned inside the first member (12) between the outermost wall of the first member (12) and the vehicle frame (11), said shield having a downwardly extending portion which extends to a lower elevation than the topmost portion of the first member opening (15) and is separated from said step (23), said shield (24) preventing an operator's foot from entering the steering cylinder opening (20) through the first member opening (15) in the installed position of the shield (24).
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-04-12 | 1985-10-12 | 1986-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-12 | 1989-10-12 | 1990-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-12 | 1993-10-12 | 1994-04-13 | $7700.00 | Window Closed / Lapsed |