Patent US3788694A successfully refreshed from Google Patents.
US3788694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article handling system
Assignee: Individual
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Filing: 1971-07-19
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Granted: 1974-01-29
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Expires: 1991-07-19
Abstract
Abstract In an article handling system having article handling means for carrying a stack of articles comprising a pair of lift arms, a rigid pivot rod pivotally joining said lift arms together, a lift cable and an opening cable operatively arranged such that: the lift arms are arranged to swing inwardly toward each other to engage and carry the stack of articles upon application of an external lifting force to the lift cable, and the opening cable is constructed to have a lifting force applied thereto to swing the lift arms apart so that they clear the stack of articles, improvement in the article handling means comprising each lift arm pivotally connected to the pivot rod at opposite ends thereof, the lift cable joined to the pivot rod at opposite ends thereof, the opening cable joined to the lift arms and disposed at a substantially right angle in respect to the lift cable, one end of the opening cable relatively permanently connected to one lift arm and the other end thereof manually connectable or disconnectable in respect to the other lift arm, two shackles mutually interlocked and arranged so that one has the external lifting force applied thereto and lifts the other, the lift cable extending through one of the shackles, the opening cable extending through the other of the shackles, whereby when the opening cable is disconnected the lift cable is made taut to lift the article handling means to carry the stack of articles, and whereby when the opening cable is connected it is made taut to lift the empty article handling means to swing and spread the lift arms apart.
Inventors
- 👤 G Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:25
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/22; B66C1/28; B66C1/30; B66C1/32
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
276 words
In an article handling system having article handling means for carrying a stack of articles comprising a pair of lift arms, a rigid pivot rod pivotally joining said lift arms together, a lift cable and an opening cable operatively arranged such that: the lift arms are arranged to swing inwardly toward each other to engage and carry said stack of articles upon application of an external lifting force to said lift cable, and the opening cable is constructed to have a lifting force applied thereto to swing the lift arms apart so that they clear the stack of articles, improvement in said article handling means comprising each said lift arm pivotally connected to said pivot rod at opposite ends thereof, said lift cable joined to said pivot rod at opposite ends thereof, said opening cable joined to said lift arms and disposed at a substantially right angle in respect to said lift cable, one end of said opening cable relatively permanently connected to one lift arm and the other end thereof manually connectable or dis-connectable in respect to the other lift arm, two shackle means mutually interlocked and arranged so that one has said external lifting force applied thereto and lifts the other, said lift cable extending through one of said shackle means, said opening cable extending through the other of said shackle means, whereby when said opening cable is disconnected said lift cable is made taut to lift said article handling means to carry said stack of articles, and whereby when said opening cable is connected it is made taut to lift the empty article handling means to swing and spread said lift arms apart.
Claim 2
Dependent Claim
276 words
In an article handling system having article handling means for carrying a stack of articles comprising a pair of lift arms, a rigid pivot rod pivotally joining said lift arms together, a lift cable and an opening cable operatively arranged such that: the lift arms are arranged to swing inwardly toward each other to engage and carry said stack of articles upon application of an external lifting force to said lift cable, and the opening cable is constructed to have a lifting force applied thereto to swing the lift arms apart so that they clear the stack of articles, improvement in said article handling means comprising each said lift arm pivotally connected to said pivot rod at opposite ends thereof, said lift cable joined to said pivot rod at opposite ends thereof, said opening cable joined to said lift arms and disposed at a substantially right angle in respect to said lift cable, one end of said opening cable relatively permanently connected to one lift arm and the other end thereof manually connectable or dis-connectable in respect to the other lift arm, two shackle means mutually interlocked and arranged so that one has said external lifting force applied thereto and lifts the other, said lift cable extending through one of said shackle means, said opening cable extending through the other of said shackle means, whereby when said opening cable is disconnected said lift cable is made taut to lift said article handling means to carry said stack of articles, and whereby when said opening cable is connected it is made taut to lift the empty article handling means to swing and spread said lift arms apart.
Claim 3
Dependent Claim
257 words
In an article handling system having article handling means for carrying flat bottomed pans comprising a pair of lift arms, a rigid pivot rod pivotally joining said arms together, a lift cable and an opening cable operatively arranged such that: the lift arms are arranged to swing inwardly toward each other to engage and carry said pans upon application of an external lifting force to the lift cable, and the opening cable is constructed to have a lifting force applied thereto to swing the lift arms apart so that they clear the stack of articles, improvement in said article handling means comprising each said lift arm pivotally connected to said pivot rod at opposite ends thereof, said lift cable joined to said pivot rod at opposite ends thereof to lift said article handling means to carry said stack of articles, said opening cable operatively connected to said lift arms to lift the empty article handling means to swing and spread said lift arms apart, each said lift arm having one right angled bottom frame member extending axially in the same direction as said pivot rod so that both said lift arms form two shelves which swing together to lift and squeeze upon the bottommost pans of said stack of pans, each said lift arm also having two other right angled frame members axially spaced apart so that both said lift arms form, in horizontal cross-section, four inwardly facing corners which assist in confining the other pans above said bottommost pans within the confines of said lift arms.
Claim 4
Dependent Claim
257 words
In an article handling system having article handling means for carrying flat bottomed pans comprising a pair of lift arms, a rigid pivot rod pivotally joining said arms together, a lift cable and an opening cable operatively arranged such that: the lift arms are arranged to swing inwardly toward each other to engage and carry said pans upon application of an external lifting force to the lift cable, and the opening cable is constructed to have a lifting force applied thereto to swing the lift arms apart so that they clear the stack of articles, improvement in said article handling means comprising each said lift arm pivotally connected to said pivot rod at opposite ends thereof, said lift cable joined to said pivot rod at opposite ends thereof to lift said article handling means to carry said stack of articles, said opening cable operatively connected to said lift arms to lift the empty article handling means to swing and spread said lift arms apart, each said lift arm having one right angled bottom frame member extending axially in the same direction as said pivot rod so that both said lift arms form two shelves which swing together to lift and squeeze upon the bottommost pans of said stack of pans, each said lift arm also having two other right angled frame members axially spaced apart so that both said lift arms form, in horizontal cross-section, four inwardly facing corners which assist in confining the other pans above said bottommost pans within the confines of said lift arms.
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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |