US3945666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powered outrigger beams having stabilizing spacer pad means
Assignee: Harnischfeger Corp
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Filing: 1975-03-17
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Granted: 1976-03-23
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Expires: 1995-03-17
Abstract
Abstract Hydraulically powered outrigger beams for cranes including a positive safety locking system for securing the outrigger beams in a fixed downward position to provide stabilization of the vehicle and crane during operation of the crane.
Inventors
- 👤 Robert A. Fritsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:07
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/62; B66C23/72; B66C23/78; B66C23/80
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
153 words
Extensible outrigger beam apparatus for a wheel supported vehicle having a frame, said apparatus comprising a pair of hydraulically extensible stabilizer outrigger beams for spanning laterally underneath the frame in criss-cross fashion, each beam having a pivotal connection at one end to one side of the frame, said beams extending laterally beyond the other side of said frame from which they are pivotally connected, a motor for controllably pivoting each of said beams about its pivotal connection to the frame whereby the vertical position of the beam with respect to the frame is readily adjusted, means connected between said frame and each of said beams for locking each beam in a fixed position about its pivotal connection to prevent said beams from upward pivotal movement, and spacing pad means connected between said frame and said beams and also connected between said beams providing a firm sliding fit between said beams and said frame.
Claim 2
Dependent Claim
153 words
Extensible outrigger beam apparatus for a wheel supported vehicle having a frame, said apparatus comprising a pair of hydraulically extensible stabilizer outrigger beams for spanning laterally underneath the frame in criss-cross fashion, each beam having a pivotal connection at one end to one side of the frame, said beams extending laterally beyond the other side of said frame from which they are pivotally connected, a motor for controllably pivoting each of said beams about its pivotal connection to the frame whereby the vertical position of the beam with respect to the frame is readily adjusted, means connected between said frame and each of said beams for locking each beam in a fixed position about its pivotal connection to prevent said beams from upward pivotal movement, and spacing pad means connected between said frame and said beams and also connected between said beams providing a firm sliding fit between said beams and said frame.
Claim 3
Dependent Claim
28 words
The apparatus set forth in claim 1 wherein at least one of said spacing pad means is located between said beams and secured to one of said beams.
Claim 4
Dependent Claim
28 words
The apparatus set forth in claim 1 wherein at least one of said spacing pads connected between said frame and said beams is rigidly secured to said frame.
Claim 5
Dependent Claim
22 words
The apparatus of claim 1 wherein said frame includes at least one downwardly extending projection for supporting one of said spacing pads.
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) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |