US 11,305,968 B1Granted

Dynamic rollout prevention hook

AssigneeLifesaving Systems Corporation

InventorSamuel Gene Maness

Life of this patent

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Abstract

A hook gate or hoist hook having a hook gate that is designed to prevent dynamic rollout. The lockable gate includes one or more release mechanisms that allow the gate to unlock and open upon actuation of the release mechanisms. The release mechanisms reside within a circumferential guard that extends outwardly from the gate. The guards preferably extend at least as far as the release mechanism or beyond the extension of the release mechanism. The hook gate further includes anti-snagging flanges extending generally in the vertical direction from both the top and bottom portions of the guard. The circumferential guard and the anti-snagging flanges in combination make it nearly impossible for an attachment mechanism to become improperly oriented under a load and effectively eliminate the possibility of dynamic rollout.

Claims19

Dependent claims

A hook gate that is insusceptible to dynamic rollout, the hook gate comprising:

a main body having a first lateral side, a second lateral side opposite the first lateral side, and a front facing surface;
the front facing surface being convex, such that the front surface arcs outwardly from an upper end of the main body of the hook gate towards a lower end of the main body of the hook gate to prevent any objects from accidentally catching on the hook gate;
a first release mechanism secured to the first lateral side, wherein at least a portion of the first release mechanism is actuatable by a user;
a second release mechanism secured to the second lateral side, wherein at least a portion of the second release mechanism is actuatable by the user;
a first guard extending a predetermined distance in a lateral direction from at least a portion of the first lateral side, wherein the first guard surrounds at least the actuatable portion of the first release mechanism thereby preventing accidental actuation of the first release mechanism;
a second guard extending a predetermined distance in the lateral direction from at least a portion of the second lateral side, wherein the second guard surrounds at least the actuatable portion of the second release mechanism thereby preventing accidental actuation of the second release mechanism;
whereby simultaneous actuation of the first and second release mechanisms allows the hook gate to open,
the front facing surface further including:
the first upper tapered flange and a second upper tapered flange;
the first upper tapered flange extending upwardly from the first guard and tapering towards an upper end of the hook gate;
and
the second upper tapered flange extending upwardly from the second guard and tapering towards an upper end of the hook gate.

9 more elements

A hook gate that eliminates the possibility of dynamic rollout, the hook gate comprising:

a main body having a first release mechanism and a second release mechanism;
a convex front facing surface that arcs outwardly from an upper end of the main body of the hook gate towards a lower end of the main body of the hook gate to prevent any objects from accidentally catching on the hook gate;
the first release mechanism having an actuatable contact accessible by a user;
the second release mechanism having an actuatable contact accessible by the user;
a first guard surrounding the actuatable contact of the first release mechanism, the first guard extending away from the main body beyond the actuatable contact of the first release mechanism;
a second guard surrounding the actuatable contact of the second release mechanism, the second guard extending away from the main body beyond the actuatable contact of the second release mechanism;
the front facing surface further including:
a first upper tapered flange and a second upper tapered flange;
the first upper tapered flange extending upwardly from the first guard and tapering towards an upper end of the hook gate;
the second upper tapered flange extending upwardly from the second guard and tapering towards an upper end of the hook gate;
whereby the first and second guards prevent accidental actuation of the first and second release mechanisms to prevent dynamic rollout.

8 more elements

A hook gate to eliminate the possibility of dynamic rollout, comprising:

a main body having a front facing surface, a first release mechanism, and a second release mechanism;
the front facing surface being convex, such that front facing surface arcs outwardly from the open retention area from an upper end of the main body of the hook gate towards a lower end of the main body of the hook gate to prevent any objects from accidentally catching on the hook gate;
the convex curve of the front facing surface matching a curvature of a hook beak when the hook gate is in a closed position;
the first release mechanism having an actuatable contact accessible by a user;
the second release mechanism having an actuatable contact accessible by the user;
a first guard circumferentially surrounding the actuatable contact of the first release mechanism, the first guard extending away from the main body beyond the actuatable contact of the first release mechanism;
and
a second guard circumferentially surrounding the actuatable contact of the second release mechanism, the second guard extending away from the main body beyond the actuatable contact of the second release mechanism;
the front facing surface further including:
a first upper tapered flange and a second upper tapered flange;
the first upper tapered flange extending upwardly from the first guard and tapering towards an upper end of the hook gate;
and
the second upper tapered flange extending upwardly from the second guard and tapering towards an upper end of the hook gate.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/857,299Filed 24 Apr 2020 · continuation in part
Priority: 13 Apr 2018
Granted: 19 Apr 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification2 codes

B66C 1/36
Crane hooks: with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads
B66C
Cranes

Family

Application62/657,254Us provisional application · filed 13 Apr 2018
Application16/174,480Parent of this continuation-in-part · filed 30 Oct 2018
US 10,669,129 B2Parent of this continuation-in-part
US 2019/0315600 A1Published application
US 11,305,968 B1This patent

From the US filing history. Foreign family members aren’t listed.

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