# US 2009/0260925 A1 · Underground enclosure system for storing components, cables, and the like > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2009/0260925 A1 - Document ID: US20090260925A1 - Status: Published application - Kind: A1 - Application number: 12/104,239 - Filed: 2008-04-16 - Published: 2009-10-22 - Earliest claimed: 2008-04-16 - Assignees: Clear View Enclosures, Inc. - Inventors: Robert J. Schilling - Web page: https://patentgrep.com/patent/US20090260925A1 ## CPC - B66B 9/02: actuated mechanically otherwise than by rope or cable - B66F 7/0666: {Multiple scissor linkages vertically arranged} - B66F 7/08: hydraulically or pneumatically operated - H05K 5/0221: {Locks; Latches} - F17C 13/002: {for vessels under pressure (F17C13/008 and F17C13/02 - F17C13/12 take precedence)} - H02B 1/28: dustproof, splashproof, drip-proof, waterproof or flameproof - Y10T 29/49757: by burning or heating - Y10T 29/49758: During simulated operation or operating conditions - B66B: ELEVATORS; ESCALATORS OR MOVING WALKWAYS ({apparatus for raising or lowering persons on theatrical stages or the like A63J5/12} ; funicular railbound systems with rigid ground-supported tracks and cable traction, e.g. cliff railways, B61B9/00; arrangements of ammunition handlers in vessels B63G3/00; hoists, lifts, or conveyors for loading or unloading in general B65G; braking or detent devices controlling normal movements of winding drums or barrels B66D; ship-lifting devices E02C; garages for many vehicles with mechanical means for lifting vehicles E04H6/12; hoists for feeding ammunition or projectiles to launching apparatus or to loading mechanisms F41A9/00) - 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) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - F17C: VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES (storing fluids in natural or artificial cavities or chambers in the earth B65G5/00; construction or assembling of bulk storage containers employing civil-engineering techniques E04H7/00; variable-capacity gas-holders F17B; liquefaction or refrigeration machines, plants, or systems F25) - H02B: BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A pressurized underground enclosure includes a battery venting system having a battery within a battery box in a sealed enclosure. A first pipe is fluidly connected to the battery box and an ambient atmosphere and includes a vacuum generator for reducing a pressure in the battery box. A second pipe is fluidly connected to the battery box and the ambient atmosphere and includes a one-way valve permitting airflow to the battery box and precluding airflow from the battery box to the ambient atmosphere. The enclosure includes a scissors lift including scissor linkage units having arms pivotally connected at terminal ends and at central positions. The scissor linkage units are moveable from a retracted to an extended position by pneumatic cylinders. The internal pressurization of the enclosure is selectively released and locking mechanisms are retracted before a rack of the scissors lift is extended through an opening of the enclosure. ## Claims ### Claim 1 A scissors lift assembly for an underground enclosure system comprising: a scissors lift sized to be received through an upper opening of an underground enclosure, the scissors lift having a plurality of scissor linkage units, each scissor linkage unit having a pivot interconnecting arms of the scissor linkage units at a central position and terminal ends pivotally coupling one of the scissor linkage units to another one of the scissor linkage units; at least two plates slideably coupled to a track disposed at a bottom portion of the scissors lift, wherein one of the plurality of scissor linkage units are pivotally mounted to the at least two plates; and a scissors lift moving piston having a first end coupled to one of the scissor linkage units and a second end coupled to another one of the scissor linkage units, wherein the scissors lift moving piston translates the scissor linkage units between a retracted position and an extended position. ### Claim 2 (depends on 1) The scissors lift assembly of claim 1, further comprising a rack coupled to the scissor linkage units for actuating the rack between the retracted position and the extended position. ### Claim 3 (depends on 1) The scissors lift assembly of claim 1, wherein the scissors lift moving piston is an air cylinder for selectively disposing the scissor linkage units between the retracted position and the extended position. ### Claim 4 (depends on 3) The scissors lift assembly of claim 3, wherein the air cylinder disposes the arm assembly at least twenty-inches per one-inch stroke of the air cylinder. ### Claim 5 (depends on 3) The scissors lift assembly of claim 3, wherein the air cylinder includes at least one air inlet port line disposed perpendicularly to the scissor linkage units. ### Claim 6 (depends on 3) The scissors lift assembly of claim 3, wherein the air cylinder is coupled to an external pressurized gas source. ### Claim 7 (depends on 1) The scissors lift assembly of claim 1, wherein each of the pivots interconnecting arms of the scissor linkage units further comprise a spacer positioned between the arms, wherein a plurality of thrust bearings separate the arms from each other and from the spacer, and wherein the arms include aligning apertures for receiving a retaining bolt. ### Claim 8 (depends on 7) The scissors lift assembly of claim 7, wherein the spacer is a tube having a center through-bore. ### Claim 9 (depends on 7) The scissors lift assembly of claim 7, wherein the spacer is a mount for receiving a bracket coupled to the scissors lift moving piston. ### Claim 10 (depends on 9) The scissors lift assembly of claim 9, wherein the mount pivotally rotates when the scissors lift moving piston translates the scissor linkage units between the retracted position and the extended position. ### Claim 11 (depends on 1) The scissors lift assembly of claim 1, further comprising guide tracks adjacent the plurality of scissor linkage units, the guide tracks arranged to expand when the scissors lift moving piston translates the scissor linkage units between the retracted position and the extended position. ### Claim 12 (depends on 2) The scissor lift assembly of claim 2, further comprising a first and second upper support bracket disposed on an upper portion of the rack, the first and second upper support bracket secured to a cover of the underground enclosure, wherein the cover of the underground enclosure includes an inflatable pneumatic seal and locking assemblies, and wherein the cover is moveable upon release of the inflatable pneumatic seal and the locking assemblies. ### Claim 13 (depends on 12) The scissors lift assembly of claim 12, wherein the locking assemblies are coupled to an air cylinder having a piston, wherein the air cylinder selectively disposes the piston into an engaged position. ### Claim 14 (depends on 1) The scissors lift assembly of claim 1, wherein the arm assembly is approximately fifty-two inches in the retracted position. ### Claim 15 (depends on 1) The scissors lift assembly of claim 1, wherein the arm assembly is approximately one-hundred thirty inches in the extended position. ### Claim 16 (depends on 1) The scissors lift assembly of claim 1, wherein each of the plates slide from a spaced position to a proximal position when the scissor linkage units are translated from the retracted position to the extended position. ### Claim 17 (depends on 15) The scissors lift assembly of claim 15, wherein each of the plates slide approximately two inches to the proximal position when the scissor linkage units are translated from the retracted position to the extended position. ### Claim 18 (depends on 1) The scissors lift assembly of claim 1, further comprising a regulator fluidly coupled to an internal pressurized gas source and a safety valve within a control box, the safety valve disposed to release excess air released from the internal pressurized gas source. ### Claim 19 A method of operating a pressurized underground enclosure comprising: stopping an internal pressurization from a pressurized gas source within an interior of an enclosure housing; deflating a pneumatic seal assembly intermediate a cover and a collar of the housing; and, retracting locking assemblies from the cover of the enclosure housing. ### Claim 20 (depends on 19) The method of claim 19 further comprising the step of: actuating a scissors lift from a retracted position to an extended position, the scissors lift having a rack sized to be received through an upper opening of the underground enclosure. ### Claim 21 (depends on 20) The method of claim 20 further comprising the step of: actuating the scissors lift from the extended position to the retracted position, wherein the rack is received through the upper opening of the underground enclosure; engaging the locking assemblies into the cover; inflating the pneumatic seal assembly intermediate a cover and a collar of the housing; and pressurizing the interior of an enclosure housing.