# US 11,027,954 B2 · Multipurpose device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,027,954 B2 - Document ID: US11027954B2 - Status: Granted - Kind: B2 - Application number: 15/120,885 - Filed: 2015-02-26 - Published: 2016-12-22 - Granted: 2021-06-08 - Earliest claimed: 2014-02-26 - Assignees: Roger Doherty - Applicants: Roger Doherty - Inventors: Roger Doherty - Web page: https://patentgrep.com/patent/US11027954B2 ## CPC - B66F 19/005: {Lifting devices for manhole covers} - E02D 29/14: Covers for manholes or the like; Frames for covers {(gully gratings E03F5/06)} - E02D 29/1418: {with implements to assist in lifting, e.g. counterweights, springs (lifting devices for covers B66F19/005)} - E04H 17/265: {for removing posts} - B66F: HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD ({invalid lifting devices A61G7/10; } mounting artificial islands on piles or like supports E02B17/00; scaffolding combined with lifting devices E04G1/22; lifting devices for sliding forms E04G11/24; lifting of buildings E04G23/06; shores or struts E04G25/00; lifts or other hoisting devices on ladders E06C7/12; props for mining E21D15/00) - E02D: FOUNDATIONS; EXCAVATIONS; EMBANKMENTS (specially adapted for hydraulic engineering E02B); UNDERGROUND OR UNDERWATER STRUCTURES {(tunnels, tunnelling, mining E21)} - E04H: BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL (foundations E02D) ## Abstract A stand-alone multipurpose lifting device includes an elongated vertical support section having a planar base section with an upper end including a substantially U-shaped receiving bearing including a plurality of pivot slots on either side of the U-shaped bearing and an angled elongated lever arm section. The lever arm section includes an angle strengthening gusset and a detachable extension arm and handle including a receiving sleeve for fitting over and receiving the end of the lever arm section. A device for cracking a seal formed around a manhole cover includes a horizontal cross bar section including a bottle jack holder recess, a bottle jack retaining means, two opposed leg sections, support struts between the horizontal cross bar and leg sections and a jack cap section including two lifting eyes including a hook and lifting chains for attaching to a manhole lifting arm detachably connected to a manhole cover. ## Claims ### Claim 1 A device for cracking a seal formed around a manhole cover comprising: a horizontal cross bar section comprising a bottle jack holder recess for receiving a bottle jack; a guide channel, said guide channel extending on a longitudinal side of the horizontal cross bar section and oriented perpendicular to the horizontal cross bar section; two opposed leg sections extending from opposite ends of the horizontal cross bar section; two support struts each extending between the horizontal cross bar section and one of the two leg sections; and a jack cap section comprising two lifting eyes, each lifting eye comprising a hook and a lifting chain for attaching to a manhole lifting key detachably connected to a manhole cover, wherein the jack cap section is configured to be disposed directly on a head of the bottle jack such that at least one of said lifting chains extends downward on one side of the bottle jack and along said guide channel to the manhole lifting key and wherein said at least one of said lifting chains is biased away from said longitudinal side of the horizontal cross bar section by said guide channel. ### Claim 2 (depends on 1) The device as claimed in claim 1, further comprising a bottle jack retaining means for retaining the bottle jack to the device. ### Claim 3 (depends on 1) The device as claimed in claim 1, wherein the device is configured to exert a pressure up to 3000 kg in weight. ### Claim 4 (depends on 1) The device as claimed in claim 1, wherein a foot is disposed at an end of each of the two opposed leg sections. ### Claim 5 (depends on 2) The device as claimed in claim 2 wherein the bottle jack retaining means comprises a retractable lever arm on one side of the bottle jack holder recess comprising a circular head section and a retractable spring on an opposite side of the bottle jack holder recess wherein the circular head section of the retractable lever arm in a working position fits around the bottle jack and is secured in place by the retractable spring. ### Claim 6 (depends on 1) The device as claimed in claim 1, wherein each respective said lifting chain is separately coupled to the jack cap section at a top of the bottle jack. ### Claim 7 A device for cracking a seal formed around a manhole cover comprising: a horizontal cross bar section comprising a bottle jack holder recess for receiving a bottle jack; a guide channels, said guide channel extending on a longitudinal side of the horizontal cross bar section; two opposed leg sections extending directly from opposite ends of the horizontal cross bar section; two support struts each extending between the horizontal cross bar section and one of the two leg sections; and a jack cap section comprising two lifting eyes, each lifting eye comprising a hook and a lifting chain for attaching to a manhole lifting key detachably connected to a manhole cover, wherein the jack cap section is configured to be disposed directly on a head of the bottle jack such that at least one of said lifting chains extends downward on one side of the bottle jack and along said guide channels to the manhole lifting key and wherein said at least one of said lifting chains is biased away from said side of the bottle jack by said guide channel.