# US 4,399,927 A · Snap-on plug > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,399,927 A - Document ID: US4399927A - Status: Granted - Kind: A - Application number: 06/265,363 - Filed: 1981-05-20 - Granted: 1983-08-23 - Earliest claimed: 1980-05-21 - Assignees: Nissan Motor Co., Ltd. - Inventors: Kouichi Yaotani; Minoru Yoshida; Oomi Arisaka - Web page: https://patentgrep.com/patent/US4399927A ## CPC - B62D 25/24: Superstructure sub-units with access {or drainage} openings having movable or removable closures; {Sealing means therefor}(inlet covers for vehicle fuel tanks B60K15/05) - Y10S 220/19: Rubber plugs and caps - B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M) - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract In accordance with the present invention, there is provided a novel and improved snap-on plug for an apertured panel. The snap-on plug comprises a shank and a flange extending laterally from one end of the shank. The shank is hollow and adapted for insertion within a complementary panel aperture. A groove is formed in the outer surface of the shank at a location adjacent the flange and adapted for engagement with a panel portion around the aperture. The shank is provided with an inner surface portion upon which a force is applied when the plug is to be inserted into the panel aperture. The inner surface is inclined with respect a plane in which the groove is positioned such that upon insertion of the plug into the complementary panel aperture the groove is gradually brought into engagement with the panel. ## Claims ### Claim 1 A snap-on plug for an apertured panel, comprising: a hollow shank adapted for insertion within a panel aperture; a flange extending laterally from one end of said shank; and a groove formed in the outer surface of said shank at a location adjacent said flange and adapted for engagement with the panel; said shank having an inner surface portion upon which a force is applied when the plug is to be inserted into the panel aperture: said inner surface portion being inclined with respect to a plane in which said groove is positioned. ### Claim 2 (depends on 1) A snap-on plug as set forth in claim 1, wherein said shank comprises an outer tubular portion from one end of which said flange extends laterally outward and which has said groove in the outer surface thereof, an annular bottom wall portion extending laterally inward from the other end of said outer tubular wall portion, an inner tubular wall portion extending axially inward of said outer tubular wall portion from the inner periphery of said bottom wall portion in a manner to form an annular space between the outer and inner tubular wall portions and a top wall portion closing an end of said inner tubular wall portion remoter from said bottom wall portion, and wherein said inclined inner surface portion is provided to said top wall portion. ### Claim 3 (depends on 2) A snap-on plug as set forth in claim 2, wherein said shank further comprises a part-cylindrical guide wall portion in the form of an extension of said inner tubular wall portion. ### Claim 4 (depends on 1) A snap-on plug as set forth in claim 1, wherein said shank comprises an outer tubular wall portion from one end of which said flange extends laterally outward and which has said groove in the outer surface thereof, an annular bottom wall portion extending laterally inward from the other end of said outer tubular wall portion, an inner tubular wall portion extending axially inward of said outer tubular wall portion from the inner periphery of said bottom wall portion in a manner to form an annular space between the outer and inner tubular wall portions and a top wall portion closing an end of said inner tubular wall portion remoter from said bottom wall portion, and wherein said inclined inner surface portion is provided to said inner tubular wall portion. ### Claim 5 (depends on 4) A snap-on plug as set forth in claim 4, wherein said inner tubular wall portion is provided with a shoulder which forms said inner surface portion. ### Claim 6 (depends on 5) A snap-on plug as set forth in claim 5, wherein said shoulder has a flat and annular configuration. ### Claim 7 (depends on 5) A snap-on plug as set forth in claim 5, wherein said shoulder is in a spiral form. ### Claim 8 (depends on 1) A snap-on plug as set forth in claim 1, wherein said shank comprises an outer tubular wall portion from one end of which said flange extends laterally outward and which has said groove in the outer surface thereof, an annular bottom wall portion extending laterally inward from the other end of said outer tubular wall portion, an inner tubular wall portion extending axially inward of said outer tubular wall portion from the inner periphery of said bottom wall portion in a manner to form an annular space between the outer and inner tubular wall portions, and a top wall portion closing an end of said inner tubular wall portion remoter from said bottom wall portion, and wherein said inclined inner surface portion is provided to said bottom wall portion. ### Claim 9 (depends on 1) A snap-on plug as set forth in claim 1, being formed from a single piece of a relatively hard resilient material.