# US 11,298,904 B1 · Can compression equipment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,298,904 B1 - Document ID: US11298904B1 - Status: Granted - Kind: B1 - Application number: 17/335,654 - Filed: 2021-06-01 - Granted: 2022-04-12 - Earliest claimed: 2021-05-13 - Assignees: Ningbo At-Technical International Trading Co., Ltd - Applicants: Ningbo At-Technical International Trading Co., Ltd - Inventors: Feng Gao; Xinhui Jiang; Xinguo Fan - Web page: https://patentgrep.com/patent/US11298904B1 ## CPC - B30B 9/321: {for consolidating empty containers, e.g. cans} - B30B 1/32: by plungers under fluid pressure - B30B 9/3057: {Fluid-driven presses} - B30B 15/30: Feeding material to presses - B30B: PRESSES IN GENERAL (producing ultra-high pressure or ultra-high pressure and high temperature to effect modifications of a substance, e.g. for making artificial diamonds B01J3/00 ){(compressing means for refuse receptacles B65F1/1405)} ## Abstract A can compression equipment is provided and belong to the field of recycling of renewable resources and environmental protection. The can compression equipment includes: a frame; a pressing block arranged at an end of an interior of the frame, an accommodating space being defined between the pressing block and a bottom of the frame and configured for accommodating the can to-be-compressed; and, a driving device connected to the pressing block and configured for driving the pressing block to move forward or backward along a lengthwise direction of the frame to change a size of the accommodating space. Instead of using manpower to compress the can, the can compression equipment can save time and manpower, and further effectively reduce a volume of the can as small as possible. ## Claims ### Claim 1 A can compression equipment, comprising: a frame; a pressing block arranged at an end of an interior of the frame, wherein an accommodating space is defined between the pressing block and a bottom of the frame and configured for accommodating a can to-be-compressed; and a driving device connected to the pressing block and configured for driving the pressing block to move forward or backward along a lengthwise direction of the frame to thereby change a size of the accommodating space; wherein the driving device comprises: a drive cylinder mounted at the end of the frame, and an end of a piston rod of the drive cylinder is arranged in the interior of the frame and fixedly connected to the pressing block; and a control valve connected to the drive cylinder and configured for controlling the piston rod of the drive cylinder to extend or retract; wherein the can compression equipment further comprises: an automatic feeding device arranged on an opened end of the frame, wherein the automatic feeding device is configured for placing another can to-be-compressed located outside of the frame into the interior of the frame through the opened end of the frame when the driving device completes a compression on the can to-be-compressed located in the interior of the frame; wherein the automatic feeding device comprises: a transportation passage arranged above the opened end of the frame and configured for accommodating a plurality of cans to-be-compressed arranged juxtaposedly, and an outlet end of the transportation passage is aligned with the opened end of the frame; and a blocking apparatus arranged between the opened end of the frame and the outlet end of the transportation passage and configured for limiting number of the plurality of cans to-be-compressed falling into the interior of the frame to be 1 each time; wherein the blocking apparatus comprises: a pre-extended cylinder and a pre-retracted cylinder oppositely arranged below the transportation passage, a rod cavity of the pre-extended cylinder and a rodless cavity of the pre-retracted cylinder are both communicated with a rodless cavity of the drive cylinder of the driving device. ### Claim 2 (depends on 1) The can compression equipment according to claim 1, wherein the control valve comprises: a manual valve or an electric control valve, arranged on an outer wall of the frame, and two gas outlets of the manual valve or the electric control valve are respectively connected to a rod cavity and a rodless cavity of the drive cylinder. ### Claim 3 (depends on 1) The can compression equipment according to claim 1, further comprising: an infrared detector arranged in the interior of the frame and configured for detecting whether the can to-be-compressed is placed in the interior of the frame; and a Microcontroller Unit (MCU) controller electrically connected to the infrared detector and the control valve, wherein the MCU controller is configured for being signally connected with the control valve when the infrared detector detects the can to-be-compressed is placed in the interior of the frame, or being signally unconnected with the control valve when the infrared detector detects the can to-be-compressed is not placed in the interior of the frame. ### Claim 4 (depends on 1) The can compression equipment according to claim 1, wherein a through-groove is provided on a side wall of the frame and configured for allowing the can to-be-compressed to fall out of the through-groove after the compression of the can to-be-compressed. ### Claim 5 (depends on 1) The can compression equipment according to claim 1, wherein the pre-extended cylinder and the pre-retracted cylinder both are horizontally arranged. ### Claim 6 (depends on 1) The can compression equipment according to claim 1, wherein the pre-extended cylinder is horizontally arranged at a side of the transportation passage, and the pre-retracted cylinder is vertically arranged on an opposite side of the side of the transportation passage.