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US3915487A Expired / Lapsed US ⏱️ 0.0 years remaining

Stabilized coupling link for chain and hook assembly

Assignee: Teledyne Inc
•
Filing: 1974-09-05
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Granted: 1975-10-28
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Expires: 1994-09-05
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Abstract

Abstract A stabilized coupling link for a chain and hook assembly wherein the coupling link has a first curved end for connection with the link of a chain and a second curved end for connection with the eye of a hook to join the hook to the chain, and a coupling link stabilizer fixed to the coupling link and extending on opposite sides of the hook and engageable with opposite sides of the hook to substantially limit movement of the coupling link to pivotal movement about an axis substantially along the axis of the eye of the hook, thus preventing twisting and jamming of the coupling link and chain during initial lifting movement of the hook.

Inventors

  • 👤 Horst Zeiler

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 23:53
CPC Classifications
B; B66; B66C; B66C1/00; B66C1/10; B66C1/12; B66C1/14

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 245 words
A stabilized chain and hook assembly, said chain comprising a plurality of joined together links and said hook comprising a body having an upturned hook at one end thereof and an opening defining an eye at the other end thereof, said eye having an axis extending substantially perpendicular to the plane of the hook, and a closed, substantially planar coupling link having a first curved end connected with an endmost link of the chain and a second curved end connected with the eye of the hook, joining the hook to the chain, and coupling link stabilizing means fixed to the coupling link and engageable with the hook to substantially limit movement of the coupling link to pivotal movement about a line substantially along the axis of the eye of the hook, thus preventing twisting and jamming of the chain and the coupling link, said stabilizing means including a restraining bar fixed at its opposite ends to opposed, spaced inner portions of the coupling link adjacent said first curved end thereof and spanning the space between said inner portions and defining a reduced opening at said first end of the coupling link in which said endmost link of the chain is received, and at least one stabilizing element welded to an outer end surface portion of the second curved end of the link and projecting therefrom in the plane of the link and having spaced apart, opposed hook-engaging surfaces disposed on opposite sides of the hook.
Claim 2
Dependent Claim 245 words
A stabilized chain and hook assembly, said chain comprising a plurality of joined together links and said hook comprising a body having an upturned hook at one end thereof and an opening defining an eye at the other end thereof, said eye having an axis extending substantially perpendicular to the plane of the hook, and a closed, substantially planar coupling link having a first curved end connected with an endmost link of the chain and a second curved end connected with the eye of the hook, joining the hook to the chain, and coupling link stabilizing means fixed to the coupling link and engageable with the hook to substantially limit movement of the coupling link to pivotal movement about a line substantially along the axis of the eye of the hook, thus preventing twisting and jamming of the chain and the coupling link, said stabilizing means including a restraining bar fixed at its opposite ends to opposed, spaced inner portions of the coupling link adjacent said first curved end thereof and spanning the space between said inner portions and defining a reduced opening at said first end of the coupling link in which said endmost link of the chain is received, and at least one stabilizing element welded to an outer end surface portion of the second curved end of the link and projecting therefrom in the plane of the link and having spaced apart, opposed hook-engaging surfaces disposed on opposite sides of the hook.
Claim 3
Dependent Claim 71 words
A stabilized coupling link as in claim 1, wherein the stabilizing means further includes an angularly shaped gusset fixed at one end to the eye portion of the hook on a side thereof opposite the upturned hook and fixed at the other end thereof to the hook body, said coupling link engageable therewith to limit pivotal movement of the coupling link relative to the hook when the chain is made slack.
Claim 4
Dependent Claim 21 words
A stabilized coupling link as in claim 2, wherein the gusset also comprises a handle to facilitate manipulation of the hook.
Claim 5
Dependent Claim 82 words
A stabilized coupling link as in claim 1, wherein the stabilizing element comprises two members fixed at their proximal ends to said outer surface portion of the second curved end of the coupling link and extending on opposite sides of the eye of the hook, the distance from an inner surface of the second curved end of the coupling link to the distal ends of the members being greater than the largest dimension in the opening of the eye of the hook.
Claim 6
Dependent Claim 27 words
A stabilized coupling link as in claim 4, wherein the distal ends of the members are arcuately shaped and conform to the shape of the hook eye.
Claim 7
Dependent Claim 25 words
A stabilized coupling link as in claim 4, wherein the members have straight inner surfaces extending from the proximal ends to the distal ends thereof.
Claim 8
Dependent Claim 44 words
A stabilized coupling link as in claim 1, wherein the stabilizing element comprises a single member fixed to said outer surface portion of the coupling link and having an arcUate lower end portion shaped complemental to the shape of the eye of the hook.

References Cited (Backward Citations)

US533311A Cited
US1562908A Cited
US2430966A Cited
US2538356A Cited
US2869255A Cited
US3606441A Cited
US3808650A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-10-27 1979-04-28 1979-10-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-10-27 1983-04-28 1983-10-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-10-27 1987-04-28 1987-10-28 $7700.00 Window Closed / Lapsed

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