# US 10,864,646 B2 · Shaving razor cartridge > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,864,646 B2 - Document ID: US10864646B2 - Status: Granted - Kind: B2 - Application number: 16/367,442 - Filed: 2019-03-28 - Published: 2019-10-03 - Granted: 2020-12-15 - Earliest claimed: 2018-03-30 - Assignees: The Gillette Company - Applicants: The Gillette Company LLC - Inventors: Matthew Michael Long; Ashok Bakul Patel; Michael Hal Bruno - Web page: https://patentgrep.com/patent/US10864646B2 ## CPC - B26B 21/521: {Connection details, e.g. connection to razor heads} - B26B 21/227: {with blades being resiliently mounted in the changeable unit} - B26B 21/4012: {Housing details, e.g. for cartridges} - B26B 21/4043: {Contour trimming} - B26B 21/4068: {Mounting devices; Manufacture of razors or cartridges (B26B21/528 takes precedence)} - B26B 21/443: {Lubricating strips attached to the razor head} - B26B 21/446: {Shaving aid stored in the razor handle} - B26B 21/48: Heating means - G01V 1/01: Measuring or predicting earthquakes - G01W 1/10: Devices for predicting weather conditions (computers per se G06; display devices G09) - G06F 18/24: Classification techniques - G06F 21/316: {by observing the pattern of computer usage, e.g. typical user behaviour} - G06F 21/552: {involving long-term monitoring or reporting} - G06F 21/6218: {to a system of files or objects, e.g. local or distributed file system or database} - G06F 40/242: Dictionaries - G06F 40/279: Recognition of textual entities - G06F 40/284: Lexical analysis, e.g. tokenisation or collocates - G06N 7/01: Probabilistic graphical models, e.g. probabilistic networks - G06Q 20/389: {Keeping log of transactions for guaranteeing non-repudiation of a transaction} - G06Q 40/02: Banking, e.g. interest calculation or account maintenance (credit or loans G06Q40/03) - G06Q 40/08: Insurance - G06V 10/56: relating to colour - G06V 10/764: using classification, e.g. of video objects - G06V 10/776: Validation; Performance evaluation - G06V 40/20: Movements or behaviour, e.g. gesture recognition (recognition of facial expressions G06V40/16) - H04L 43/045: for graphical visualisation of monitoring data - H04L 63/1416: {Event detection, e.g. attack signature detection} - H04L 63/1425: {Traffic logging, e.g. anomaly detection} - B26B 21/225: {the changeable unit being resiliently mounted on the handle} - B26B 21/4018: {Guard elements} - B26B 21/4025: {Cap elements} - B26B 21/4031: {characterised by special geometric shaving parameters, e.g. blade span or exposure} - B26B 21/522: {Ergonomic details, e.g. shape, ribs or rubber parts} - B26B 21/528: {Manufacture of razor handles} - G06F 40/157: using dictionaries or tables - G06F 40/205: Parsing - G06Q 50/26: Government or public services (business processes related to the transportation industry G06Q50/40) - B26B: HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR (for harvesting A01D; for horticulture, for forestry A01G; for butchering or meat treatment A22; for manufactering or repairing footwear A43D; nail clippers or cutters A45D29/02; kitchen equipment A47J; {vegetable slicers, julienne cutters and similar devices and holders therefor, B26D3/28}; for surgical purposes A61B; for metal B23D; cutting by abrasive fluid jets B24C5/02; plier-like tools with cutting edges B25B7/22; pincers B25C11/02; handles for hand implements, in general B25G; guillotine-type cutters B26D; {perforating by non-mechanical means, e.g. by fluid jet, B26F1/26}; for erasing B43L19/00; for textile materials D06H) - G01V: GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS (means for indicating the location of accidentally buried, e.g. snow-buried, persons A63B29/02) - G01W: METEOROLOGY (radar, sonar, lidar or analogous systems, designed for meteorological use G01S13/95, G01S15/88, G01S17/95) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G06N: COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS - G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR - G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A shaving razor cartridge includes a housing and at least one razor blade. The housing extends between a front end and a rear end. The housing includes a blade support portion and a handle interface portion. The blade support portion is positioned between the front end and the rear end and includes a cap and a guard. The guard is spaced from the cap and cooperates with the cap to define a shaving plane. The handle interface portion is positioned between the front end and the rear end and includes a rear wall, a front wall, a first sidewall, and a second sidewall. The rear wall includes a lower surface and an interior surface. The front wall includes a lower surface and an interior surface and is spaced from the rear wall. The at least one razor blade is disposed in the blade support portion. ## Claims ### Claim 1 A shaving razor cartridge comprising: a housing that extends between a front end of the shaving razor cartridge and a rear end of the shaving razor cartridge, the housing comprising: a blade support portion positioned between the front end and the rear end and comprising: a cap; and a guard spaced from the cap and cooperating with the cap to define a shaving plane; and a handle interface portion positioned between the front end and the rear end and comprising: a rear wall comprising a lower surface and an interior surface; and a front wall comprising a lower surface and an interior surface and spaced from the rear wall; a first sidewall that extends between the rear wall and the front wall and comprises an interior surface; a second sidewall that extends between the rear wall and the front wall comprises an interior surface, the second sidewall being spaced from the first sidewall; and at least one razor blade disposed in the blade support portion between the cap and the guard, wherein: the front wall intersects each of the first sidewall and the second sidewall at a pair of front corners; the rear wall intersects each of the first sidewall and the second sidewall at a pair of rear corners; the lower surfaces cooperate to define a lower opening; the front wall, the rear wall, the first sidewall, and the second sidewall cooperate to at least partially define a handle receptacle that extends to the lower opening; the rear wall is more proximate to the blade support portion than the front wall; one or more of the front corners and the rear corners are configured to flex to facilitate removal and insertion of a handle with respect to the handle receptacle. ### Claim 2 (depends on 1) The shaving razor cartridge of claim 1 wherein each of the front corners and the rear corners are configured to flex to facilitate removal and insertion of the handle with respect to the handle receptacle. ### Claim 3 (depends on 1) The shaving razor cartridge of claim 1 wherein: one or more of the front corners comprises a first cross-sectional moment of inertia; one or more of the front wall, the first sidewall, and the second sidewall comprises a second cross-sectional moment of inertia adjacent to the front corners; and the second cross-sectional moment of inertia is greater than the first cross-sectional moment of inertia. ### Claim 4 (depends on 3) The shaving razor cartridge of claim 3 wherein the first cross-sectional moment of inertia is less than 2 mm4. ### Claim 5 (depends on 1) The shaving razor cartridge of claim 1 wherein: one or more of the front corners comprises a first cross-sectional moment of inertia; one or more of the rear corners comprises a second cross-sectional moment of inertia; one or more of the front wall, the rear wall, the first sidewall, and the second sidewall comprises a third cross-sectional moment of inertia adjacent to the front corners; and the third cross-sectional moment of inertia is greater than each of the first cross-sectional moment of inertia and the second cross-sectional moment of inertia. ### Claim 6 (depends on 5) The shaving razor cartridge of claim 5 wherein one or more of the first cross-sectional moment of inertia and the second cross-sectional moment of inertia is less than 2 mm4. ### Claim 7 (depends on 6) The shaving razor cartridge of claim 6 wherein the first cross-sectional moment of inertia and the second cross-sectional moment of inertia are substantially equal. ### Claim 8 (depends on 1) The shaving razor cartridge of claim 1 wherein the front wall has a first height, the rear wall has a second height, and the first height is less than the second height. ### Claim 9 (depends on 8) The shaving razor cartridge of claim 8 wherein the first height is between 1.5 mm and 7.5 mm, and the second height is between 7.5 mm and 12 mm. ### Claim 10 (depends on 1) The shaving razor cartridge of claim 1 wherein: the handle interface portion further comprises an upper surface defining an upper opening; and the handle receptacle extends between the lower opening and the upper opening; and the upper opening is more proximate to the shaving plane than the lower opening. ### Claim 11 (depends on 10) The shaving razor cartridge of claim 10 wherein: the at least one razor blade extends laterally between opposing sides of the blade support portion; the lower opening has a first length that extends laterally along the handle interface portion; the upper opening has a second length that extends laterally along the handle interface portion; and the first length is greater than the second length. ### Claim 12 (depends on 11) The shaving razor cartridge of claim 11 wherein the first length is between 29 mm and 39 mm, and the second length is between 26 mm and 36 mm. ### Claim 13 (depends on 10) The shaving razor cartridge of claim 10 wherein the upper surface is within a vertical distance of the shaving plane. ### Claim 14 (depends on 13) The shaving razor cartridge of claim 13 wherein the upper surface is disposed between the shaving plane and the lower surfaces. ### Claim 15 (depends on 14) The shaving razor cartridge of claim 14 wherein the vertical distance is less than 1 mm. ### Claim 16 A shaving razor cartridge comprising: a housing that extends between a front end of the shaving razor cartridge and a rear end of the shaving razor cartridge, the housing comprising: a blade support portion positioned between the front end and the rear end and comprising: a cap; and a guard spaced from the cap and cooperating with the cap to define a shaving plane; and a handle interface portion positioned between the front end and the rear end and comprising: a rear wall comprising a lower surface and an interior surface; and a front wall comprising a lower surface and an interior surface and spaced from the rear wall; a first sidewall that extends between the rear wall and the front wall and comprises an interior surface; a second sidewall that extends between the rear wall and the front wall comprises an interior surface, the second sidewall being spaced from the first sidewall; and at least one razor blade disposed in the blade support portion between the cap and the guard, wherein: the front wall intersects each of the first sidewall and the second sidewall at a pair of front corners; the rear wall intersects each of the first sidewall and the second sidewall at a pair of rear corners; the lower surfaces cooperate to define a lower opening; the front wall, the rear wall, the first sidewall, and the second sidewall cooperate to at least partially define a handle receptacle that extends to the lower opening; the rear wall is more proximate to the blade support portion than the front wall; one or more of the rear corners comprises a first cross-sectional moment of inertia; one or more of the rear wall, the first sidewall, and the second sidewall comprises a second cross-sectional moment of inertia adjacent to the rear corners; and the second cross-sectional moment of inertia is greater than the first cross-sectional moment of inertia. ### Claim 17 (depends on 16) The shaving razor cartridge of claim 16 wherein the first cross-sectional moment of inertia is less than 2 mm4. ### Claim 18 A shaving razor cartridge comprising: a housing that extends between a front end of the shaving razor cartridge and a rear end of the shaving razor cartridge, the housing comprising: a blade support portion positioned between the front end and the rear end and comprising: a cap; and a guard spaced from the cap and cooperating with the cap to define a shaving plane; and a handle interface portion positioned between the front end and the rear end and comprising: a rear wall comprising a lower surface and an interior surface; and a front wall comprising a lower surface and an interior surface and spaced from the rear wall; a first sidewall that extends between the rear wall and the front wall and comprises an interior surface; a second sidewall that extends between the rear wall and the front wall comprises an interior surface, the second sidewall being spaced from the first sidewall; and at least one razor blade disposed in the blade support portion between the cap and the guard, wherein: the front wall intersects each of the first sidewall and the second sidewall at a pair of front corners; the rear wall intersects each of the first sidewall and the second sidewall at a pair of rear corners; the lower surfaces cooperate to define a lower opening; the front wall, the rear wall, the first sidewall, and the second sidewall cooperate to at least partially define a handle receptacle that extends to the lower opening; the rear wall is more proximate to the blade support portion than the front wall; one or more of the front corners comprises a first cross-sectional moment of inertia; one or more of the rear corners comprises a second cross-sectional moment of inertia; one or more of the front wall, the rear wall, the first sidewall, and the second sidewall comprises a third cross-sectional moment of inertia adjacent to the front corners; and the third cross-sectional moment of inertia is greater than each of the first cross-sectional moment of inertia and the second cross-sectional moment of inertia. ### Claim 19 (depends on 18) The shaving razor cartridge of claim 18 wherein one or more of the first cross-sectional moment of inertia and the second cross-sectional moment of inertia is less than 2 mm4. ### Claim 20 (depends on 19) The shaving razor cartridge of claim 19 wherein the first cross-sectional moment of inertia and the second cross-sectional moment of inertia are substantially equal.