US3917082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Destacking apparatus
Assignee: Wyard Ind Inc
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Filing: 1973-11-02
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Granted: 1975-11-04
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Expires: 1993-11-02
Abstract
Abstract An apparatus for the destacking of containers arranged in a plurality of stacked tiers, each tier containing a plurality of said containers. The apparatus lifts the stack to a position where the top tier is held in place while the stack is again lowered. A plate is placed under the separated tier of containers, the tier is then released to the plate and the plate is moved out of the path of the stack. The separated tier is then moved onto a conveyor. The containers as they move onto the conveyor are separated and directed to a transversely moving conveyor in spaced relation where they are oriented with the containers all spaced and all of the containers in the same position.
Inventors
- 👤 Richard W Howard
- 👤 Roman J Weier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:13
CPC Classifications
B; B65; B65G; B65G59/00; B65G59/02; B65G59/026; B65G47/00; B65G47/22; B65G47/26; B65G47/30; B65G47/31; B65G59/04; B65G59/045
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
315 words
A destacking device adapted for serially removing tiers of containers from a stack and placing said tiers in a separating apparatus, said destacking device comprising: a hoist for raising and lowering a stack of containers arranged with a plurality of containers in side-by-side order in a rectangular tier, a suction head positioned above said hoist in a fixed position, said suction head comprising a hood having a perforate plate and blower means for establishing subatmospheric pressure within said hood upon engagement of a tier of containers with said perforate plate of said hood, bar means disposed in a plane below said plate and about said hood, said bar means comprising a gate mounted adjacent said hood for reciprocation in a plane generally parallel to the path of said hoist, and at least one bar extending parallel to said gate and movable toward and away from said gate, means mounting said at least one bar for movement toward the path of said hoist for engaging a tier of containers positioned against said perforate plate of said suction head for crowding said containers together and holding the same against said gate, plate means movable along a path normal to and into and out of the path of said hoist and under said gate between a load position beneath a tier of containers disposed against said suction head for receiving said tier of boxes and a discharge position spaced from the path of said hoist, and drive means for raising said hoist, for energizing said suction head, for actuating said bar means to move the same toward a said tier, for lowering said hoist, for moving said plate means to said load position, for de-energizing said suction head and releasing said bars to place said containers on said plate means, and for moving said plate means transversely out of the path of said hoist to said discharge position.
Claim 2
Dependent Claim
315 words
A destacking device adapted for serially removing tiers of containers from a stack and placing said tiers in a separating apparatus, said destacking device comprising: a hoist for raising and lowering a stack of containers arranged with a plurality of containers in side-by-side order in a rectangular tier, a suction head positioned above said hoist in a fixed position, said suction head comprising a hood having a perforate plate and blower means for establishing subatmospheric pressure within said hood upon engagement of a tier of containers with said perforate plate of said hood, bar means disposed in a plane below said plate and about said hood, said bar means comprising a gate mounted adjacent said hood for reciprocation in a plane generally parallel to the path of said hoist, and at least one bar extending parallel to said gate and movable toward and away from said gate, means mounting said at least one bar for movement toward the path of said hoist for engaging a tier of containers positioned against said perforate plate of said suction head for crowding said containers together and holding the same against said gate, plate means movable along a path normal to and into and out of the path of said hoist and under said gate between a load position beneath a tier of containers disposed against said suction head for receiving said tier of boxes and a discharge position spaced from the path of said hoist, and drive means for raising said hoist, for energizing said suction head, for actuating said bar means to move the same toward a said tier, for lowering said hoist, for moving said plate means to said load position, for de-energizing said suction head and releasing said bars to place said containers on said plate means, and for moving said plate means transversely out of the path of said hoist to said discharge position.
Claim 3
Dependent Claim
57 words
A destacking device according to claim 1 wherein said bar means comprises two opposed bars positioned generally normal to said gate and said at least one bar, said opposed bars and said at least one bar being movable by motor means toward the path of said hoist to engage the containers about the edge of a tier.
Claim 4
Dependent Claim
305 words
A destacking device adapted for serially removing tiers of containers from a stack and placing said tiers in a separating apparatus, said destacking device comprising: a hoist for raising and lowering a stack of containers arranged with a plurality of containers in side-by-side order in a rectangular tier, a suction head positioned above said hoist in a fixed position, said suction head comprising a hood having a perforate plate and blower means for establishing a subatmospheric pressure within said hood upon engagement of a tier of containers with said perforate plate of said hood, plate means movable along a path normal to and into and out of the path of said hoist between a load position beneath a tier of containers disposed against said suction head for receiving said tier of boxes and a discharge position spaced from the path of said hoist, bar means disposed in a plane below said plate and about said hood, said bar means comprising a gate mounted for reciprocation in a plane parallel to the path of said hoist and toward and away from the path of said plate means, and three bars positioned about said suction head intermediate the space between said perforate plate and the path of said plate means, said three bars being movable toward the path of said hoist for engaging the exterior containers in a said tier and crowding them together, and drive means for raising said hoist, for energizing said suction head, for actuating said bar means to move the same toward a said tier, for lowering said hoist, for moving said plate means to said load position, for de-energizing said suction head and releasing said bars to place said containers on said plate means, and for moving said plate means transversely out of the path of said hoist to said discharge position.
Claim 5
Dependent Claim
305 words
A destacking device adapted for serially removing tiers of containers from a stack and placing said tiers in a separating apparatus, said destacking device comprising: a hoist for raising and lowering a stack of containers arranged with a plurality of containers in side-by-side order in a rectangular tier, a suction head positioned above said hoist in a fixed position, said suction head comprising a hood having a perforate plate and blower means for establishing a subatmospheric pressure within said hood upon engagement of a tier of containers with said perforate plate of said hood, plate means movable along a path normal to and into and out of the path of said hoist between a load position beneath a tier of containers disposed against said suction head for receiving said tier of boxes and a discharge position spaced from the path of said hoist, bar means disposed in a plane below said plate and about said hood, said bar means comprising a gate mounted for reciprocation in a plane parallel to the path of said hoist and toward and away from the path of said plate means, and three bars positioned about said suction head intermediate the space between said perforate plate and the path of said plate means, said three bars being movable toward the path of said hoist for engaging the exterior containers in a said tier and crowding them together, and drive means for raising said hoist, for energizing said suction head, for actuating said bar means to move the same toward a said tier, for lowering said hoist, for moving said plate means to said load position, for de-energizing said suction head and releasing said bars to place said containers on said plate means, and for moving said plate means transversely out of the path of said hoist to said discharge position.
Claim 6
Dependent Claim
46 words
A destacking device according to claim 3 wherein said plate means is movable away from the path of said hoist to said discharge position and said device further includes a separating means for separating the containers in said tier and placing the containers in a file.
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 |