# US 11,077,580 B2 · Refill > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,077,580 B2 - Document ID: US11077580B2 - Status: Granted - Kind: B2 - Application number: 16/422,443 - Filed: 2019-05-24 - Published: 2019-09-12 - Granted: 2021-08-03 - Earliest claimed: 2017-11-10 - Assignees: Max Co., Ltd. - Applicants: Max Co., Ltd. - Inventors: Toshio Shimizu; Futoshi Kameda; Katsunori Manabe; Kiichi Haramiishi - Web page: https://patentgrep.com/patent/US11077580B2 ## CPC - B27F 7/38: Staple feeding devices - B65H 37/04: for securing together articles or webs, e.g. by adhesive, stitching or stapling (adhering replacement to expiring web during change of web roll B65H19/18) - B27F: DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES (hand-held nailing or stapling tools B25C; manufacture of cases, trunks or boxes from wood B27M3/34; connections for building structures in general, e.g. dowels for use in building constructions E04B1/38; jointing elements in general, e.g. dowels in general, F16B {; manufacture of long strips or planks by bonding together pieces of wood, e.g. by glueing, B27M3/0013}) - B65H: HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES ## Abstract A refill includes a peripheral wall defining a space capable of accommodating staples therein. The peripheral wall includes a bottom wall having a first side, a second side opposite to the first side, and a third side connecting end portions of the first side and the second side, a first side wall standing from the first side, a second side wall standing from the second side and opposing the first side wall, and a front wall positioned above the third side and connecting the first side wall and the second side wall. A first opening is formed on the first side wall and the front wall to extend across a boundary between the first side wall and the front wall. ## Claims ### Claim 1 A refill comprising: a staple receiving portion comprising: a bottom wall configured to allow a stack of connected staples to be placed thereon; a first side wall erected from the bottom wall; a second side wall erected from the bottom wall and positioned at a location opposing the first side wall; a front wall connecting the first side wall with the second side wall and having a discharging port for discharging the connected staples, wherein the front wall is erected from the bottom wall with the discharging port interposed therebetween; and a rear wall erected from the bottom wall, connecting the first side wall with the second side wall, and positioned at a location opposing the front wall, wherein the staple receiving portion is provided with an opening at a location thereon opposing the bottom wall; and a cover member configured to be fitted in the opening to cover the connected staples from above and also to descend along a stacking direction of the connected staples inside the staple receiving portion as the connected staples are discharged through the discharging port and thus the connected staples are reduced, wherein the cover member has a protrusion portion protruding upward from an upper surface thereof, and wherein the protrusion portion is arranged at locations on the upper surface, which is closer to the rear wall than the middle portion thereof in a discharging direction of the connected staples, wherein the protrusion portion has a top portion configured to be positioned above upper edge portions of the first and second side walls when the maximum number of the connected staples is stacked in the staple receiving portion. ### Claim 2 (depends on 1) The refill according to claim 1, wherein the protrusion portion includes a plurality of protrusion portions arranged on the upper surface at locations close to the rear wall. ### Claim 3 (depends on 2) The refill according to claim 2, wherein the protrusion portions include a pair of protrusion portions arranged on the upper surface at locations close to the rear wall, wherein one of the pair of protrusion portions is positioned close to the first side wall, and the other of the pair of protrusion portions is positioned close to the second side wall. ### Claim 4 (depends on 3) The refill according to claim 3, wherein the protrusion portion has a generally trapezoid shape in a side view. ### Claim 5 (depends on 4) The refill according to claim 4, wherein the protrusion portion has a generally right-angled trapezoid shape in a side view, and an acute-angle side of the generally right-angled trapezoid shape is arranged to face forward. ### Claim 6 (depends on 1) The refill according to claim 1, wherein the protrusion portion has a generally trapezoid shape in a side view. ### Claim 7 (depends on 6) The refill according to claim 6, wherein the protrusion portion has a generally right-angled trapezoid shape in a side view, and an acute-angle side of the generally right-angled trapezoid shape is arranged to face forward. ### Claim 8 (depends on 2) The refill according to claim 2, wherein the protrusion portion has a generally trapezoid shape in a side view. ### Claim 9 (depends on 8) The refill according to claim 8, wherein the protrusion portion has a generally right-angled trapezoid shape in a side view, and an acute-angle side of the generally right-angled trapezoid shape is arranged to face forward.