Patent US3701446A successfully refreshed from Google Patents.
US3701446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Horizontally turnable material handling forks
Assignee: C AND M Mfg CO Inc
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Filing: 1970-12-02
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Granted: 1972-10-31
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Expires: 1990-12-02
Abstract
Abstract Forks are mounted on a vertical pin which extends upright from a carrier elongated in the direction of travel of a lift truck. The carrier moves between parallel rails mounted on a platform of a carriage which is vertically movable on a mast. A turning device connected to the forks and to the carrier turns the forks to one of three positions, left, right or straight ahead. Another device moves the carrier to the left or to the right on the platform.
Inventors
- 👤 Raymond Leonard Smith Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:06
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/12; B66F9/14; B66F9/147
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
171 words
Material handling apparatus comprising a carriage mounted on a base for upward and downward movement, carrier means mounted on the carriage for generally horizontal movement with respect thereto in a direction generally perpendicular to a forward direction of the base, pin means extending vertically from the carrier means, fork means mounted on the pin means, turning means connected to the carrier means and to one of the pin and fork means for turning the fork means in a generally horizontal plane with respect to the carrier means, stop means associated with the turning means for limiting movement of the fork means between two 180* opposite positions in a direction of movement of the carrier means, positioning means having a spring loaded means and three detents arranged in a semi-circular opening about the pin means for holding the fork means in positions perpendicular and parallel to a forward direction of the base, and driving means connected to the carrier means and to the carriage for moving the carrier means across the carriage.
Claim 2
Dependent Claim
171 words
Material handling apparatus comprising a carriage mounted on a base for upward and downward movement, carrier means mounted on the carriage for generally horizontal movement with respect thereto in a direction generally perpendicular to a forward direction of the base, pin means extending vertically from the carrier means, fork means mounted on the pin means, turning means connected to the carrier means and to one of the pin and fork means for turning the fork means in a generally horizontal plane with respect to the carrier means, stop means associated with the turning means for limiting movement of the fork means between two 180* opposite positions in a direction of movement of the carrier means, positioning means having a spring loaded means and three detents arranged in a semi-circular opening about the pin means for holding the fork means in positions perpendicular and parallel to a forward direction of the base, and driving means connected to the carrier means and to the carriage for moving the carrier means across the carriage.
Claim 3
Dependent Claim
32 words
The material handling apparatus of claim 1 wherein the carrier means comprises a generally rectangular member elongated in a forward direction of the base having roller means at opposite longitudinal ends thereof.
Claim 4
Dependent Claim
47 words
The materials handling apparatus of claim 2 wherein the carriage means comprises a generally horizontal platform having spaced inward opening channel tracks mounted thereon and parallely oriented in a direction transverse to a forward direction of the base for receiving the roller means of the carrier means.
Claim 5
Dependent Claim
41 words
The apparatus of claim 1 wherein the pin means comprises a first section rigidly mounted in the carrier means and extending toward the fork means and a second section rigidly mounted in the fork means and rotatable on the first section.
Claim 6
Dependent Claim
30 words
The materials handling apparatus of claim 1 wherein the base comprises an attachment means for attaching the carriage to a mast and to a vertically movable means on the mast.
Claim 7
Dependent Claim
36 words
The materials handling apparatus of claim 1 wherein the base comprises a stacker truck having a mast movably holding the carriage and extensible means connected to the carriage for driving the carriage vertically along the mast.
Claim 8
Dependent Claim
108 words
The materials handling apparatus of claim 1 wherein the carriage has a general horizontal platform, spaced inward opening channel rails mounted on the platform and parallely oriented transverse to a forward direction of the base, wherein the carrier means is generally elongated in the forward direction of the base and has roller means in extension of opposite longitudinal ends of the carrier means, wherein the pin means comprises a first section rigidly mounted in the carrier means and extending upward therefrom and wherein the fork means comprises support means having a second section of the pin means mounted therein and parallel forks extending horizontally outward from the support.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |