Cradle assist devices and related kits and methods

Patent metadata

Field	Value
Publication number	US-10431399-B2
Application number	US-201715432625-A
Country	US
Kind code	B2
Filing date	Feb 14, 2017
Priority date	Mar 14, 2014
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

Cradle-assist assemblies attached to the breaker cradle housing and/or base or residing at least partially in the breaker cradle housing and/or base include at least one actuator configured to laterally translate the at least one right and the at least one left lock members from the extended lock position to the retracted unlocked position in response to input from a user. The at least one actuator and/or transverse member(s) can be held in a defined position so that the lock members of the cradle can be locked in the respective retracted or extended positions until the cradle assist (internal) lock is manually or automatically released.

First claim

That which is claimed is:

1. A retrofit kit for a breaker cradle having a base with right and left handles that communicate with lock members, wherein the lock members are retractable and extendable relative to sidewalls of the base, comprising:
a cradle assist assembly that releasably engages or attaches to the breaker cradle, wherein the cradle assist assembly has at least one actuator attached to right and left transverse members, wherein the right and left transverse members are above and external to a front of the base and are configured to engage respective right and left handles of the breaker cradle to thereby allow retraction of the right and left handles and the lock members using a single operator,
wherein, when engaged or attached to the breaker cradle, the at least one actuator is entirely external to the front of the base and the breaker cradle.

2. A retrofit kit for a breaker cradle having a base with right and left handles that communicate with lock members, wherein the lock members are retractable and extendable relative to sidewalls of the base, comprising:
a cradle assist assembly that releasably engages or attaches to the breaker cradle, wherein the cradle assist assembly has at least one actuator attached to right and left transverse members, wherein the right and left transverse members are above and external to a front of the base and are configured to engage respective right and left handles of the breaker cradle to thereby allow retraction of the right and left handles and the lock members using a single operator,
wherein the cradle assist assembly comprises a housing that mounts external to the base, wherein the at least one actuator is held by the housing to also be external to the base, and wherein the at least one actuator is configured to allow the single operator to directly operate the at least one actuator up and/or down to selectively cause movement of the right and left transverse members in a first transverse inward direction and in an opposing transverse outward direction to respectively retract and extend the lock members.

3. The retrofit kit of claim 1 , wherein the at least one actuator is configured to reside above and external to the base and is configured to translate vertically and/or transversely to force the right and left transverse members to pull and/or push the right and left handles in response to a force applied thereto by the at least one actuator.

4. The retrofit kit of claim 1 , wherein the at least one actuator translates downward and pulls the right and left transverse members attached to the right and left handles inward toward the at least one actuator to retract the right and left lock members as the lock members to cause the right and left lock members to reside at least partially inside the base relative to a locked position.

5. The retrofit kit of claim 1 , wherein the at least one actuator is a single, manually operative foot actuator that concurrently pulls the right and left transverse members inward to move the lock members in the breaker cradle to an unlocked position.

6. The retrofit kit of claim 1 , wherein the at least one actuator comprises first and second manually operative foot actuators that respectively pull the right and left transverse members inward to move at least one right lock member and at least one left lock member in the breaker cradle as the lock members to move the at least one right lock member and the at least one left lock members to an unlocked position and that respectively push the right and left transverse members outward to move the at least one right lock member and the at least one left lock member to a locked position.

7. A retrofit kit for a breaker cradle having a base with right and left handles that communicate with lock members, wherein the lock members are retractable and extendable relative to sidewalls of the base, comprising:
a cradle assist assembly that releasably engages or attaches to the breaker cradle, wherein the cradle assist assembly has at least one actuator attached to right and left transverse members, wherein the right and left transverse members are above and external to a front of the base and are configured to engage respective right and left handles of the breaker cradle to thereby allow retraction of the right and left handles and the lock members using a single operator,
wherein the cradle assist assembly comprises a housing having a transverse extent that is less than a transverse extent of the front of the base and that resides outside the base and holds only inner end portions of the right and left transverse members with medial and outer ends extending out of the housing and external to the base and is configured to releasably attach and/or affix to at least a medial portion of an upper surface of the base between the right and left handles.

8. The retrofit kit of claim 1 , wherein the at least one actuator comprises a plurality of actuators, at least one for the left transverse member and at least one for the right transverse member so that the right and left transverse members are independently controlled.

9. A retrofit kit for a breaker cradle having a base with right and left handles that communicate with lock members, wherein the lock members are retractable and extendable relative to sidewalls of the base, comprising:
a cradle assist assembly that releasably engages or attaches to the breaker cradle, wherein the cradle assist assembly has at least one actuator attached to right and left transverse members, wherein the right and left transverse members are above and external to a front of the base and are configured to engage respective right and left handles of the breaker cradle to thereby allow retraction of the right and left handles and the lock members using a single operator,
wherein the left and right transverse members each has a flat segment that resides external to and above and against or proximate an upper surface of the front of the base in a position that is between the right and right handles, each with an end portion that engages a corresponding adjacent one of the right and left handles.

10. The retrofit kit of claim 1 , wherein the cradle assist assembly further comprises:
a cradle assist housing with a lower base plate configured to attach to the breaker cradle;
an upper actuator plate coupled to the at least one actuator and residing in the housing above the upper base plate;
a right clevis and a left clevis attached to the base plate residing under the actuator plate; and
a right pivot attachment member pivotably attached to the right clevis and a left pivot attachment member pivotably attached to the left clevis, the right and left pivot attachment members pivotably attached to inner end portions of respective right and left transverse members, wherein the right and left pivot attachment members cooperably engage the actuator plate to pivot in response to movement of the actuator plate to retract and extend the transverse members.

11. The retrofit kit of claim 10 , further comprising a lock held in the cradle assist housing in communication with the actuator plate and/or transverse members and an externally accessible release member, the lock inhibiting the actuator plate from translating until the release member is in a release position.

12. The retrofit kit of claim 1 , wherein inner end portions of the right and left transverse members are pivotably held in a housing to be adjustable laterally and/or resiliently float in a front to back direction on the breaker cradle to thereby accommodate different handle configurations and/or dimensional tolerance variation.

13. The retrofit kit of claim 1 , wherein

Assignees

• Eaton Intelligent Power Ltd

Inventors

• Benke James Jeffery
• Ashtekar Koustubh Dnyandeo
• Wang Hongbin

Classifications

• H01H71/32

  having permanently magnetised part · CPC title

• H02B11/133

  with interlock · CPC title

• H02B11/167

  truck type (H02B11/127 takes precedence) · CPC title

• H01H71/12

  Automatic release mechanisms with or without manual release · CPC title

• H01H9/24 Primary

  for interlocking two or more parts of the mechanism for operating contacts · CPC title