Patents Assigned to Prospira Corporation
-
Patent number: 11959527Abstract: In a vibration isolator of the present invention, an orifice passage (24) configured to allow a main liquid chamber (14) and an auxiliary liquid chamber (15) to communicate with each other, a plurality of first communication holes (42a) configured to allow the main liquid chamber and an accommodation chamber (42) to communicate with each other, and a second communication hole (42b) configured to allow the auxiliary liquid chamber and the accommodation chamber to communicate with each other are formed in a partition member (16), a tubular member (21) that protrudes in an axial direction toward an elastic body is formed on a first wall surface (16b) of the partition member in which the first communication holes are opened and which constitutes part of an inner surface of the main liquid chamber, and the plurality of first communication holes are opened in both of an inner portion (16f) of the first wall surface positioned inside the tubular member and an outer portion (16g) of the first wall surface positionedType: GrantFiled: May 10, 2019Date of Patent: April 16, 2024Assignee: Prospira CorporationInventors: Yuki Satake, Rei Mikoshiba, Akira Ueki, Yasuyuki Nagashima
-
Patent number: 11959587Abstract: A bracket (1) includes a bracket body (2) made of a synthetic resin and a reinforcement member (3) made of a fiber reinforced plastic. The bracket body (2) has a surrounding portion (20). The reinforcement member (3) extends in a surrounding direction. A reinforcement member arrangement portion (20a) of the surrounding portion (20) is formed of an outer circumference (211), an inner circumference (212), and a connecting portion (213). The reinforcement member arrangement portion (20a) is in the shape of a letter I in cross section in which the cross sectional width (W3) of the connecting portion (213) is narrower than the cross sectional width (W1) of the outer circumference (211) and the cross sectional width (W2) of the inner circumference (212). The reinforcement member (3) is arranged on the outer circumference (211).Type: GrantFiled: March 19, 2021Date of Patent: April 16, 2024Assignee: Prospira CorporationInventors: Mizuki Kataura, Tadashi Onishi, Masaaki Ohashi
-
Patent number: 11920651Abstract: Provided is a bracket that has excellent durability while curbing an increase in weight. A bracket (1A) that has an opening (A) is made of a resin and is a tubular bracket, which has a pair of column portions (11) and a pair of bridging portions (12), in which the opening (A) is defined by the column portions (11) and the bridging portions (12). A plate portion (13) is included in at least one of the column portions (11), and in one of the bridging portions (12), a width (W1) of a bracket outer circumferential side outer surface (12f1) of the bridging portion (12) in an opening penetrating direction is maximum at an extending direction end (12e) of the bridging portion (12) in a view in an extending direction of the column portions (11).Type: GrantFiled: November 18, 2019Date of Patent: March 5, 2024Assignee: Prospira CorporationInventors: Tadashi Onishi, Masato Kobayashi
-
Patent number: 11892050Abstract: An anti-vibration device including an outer cylinder 10; a shaft member 20 that is provided in the outer cylinder 10; and an elastic member 40 that links the outer cylinder 10 and the shaft member 20, in which the shaft member 20 has an inner cylinder and four stopper portions 30a to 30d that protrudes from a circumferential surface of the inner cylinder toward the outer cylinder 10 and that are mutually provided at intervals in a circumferential direction, and in which the elastic member 40 links the outer cylinder 10 and the shaft member 20 at a position between stopper portions that are adjacent to each other in the circumferential direction.Type: GrantFiled: November 25, 2019Date of Patent: February 6, 2024Assignee: Prospira CorporationInventor: Naoki Maeda
-
Patent number: 11885389Abstract: A bracket with an excellent reinforcing effect is provided. A bracket (1) with an opening (A) includes a body (10) and a reinforcement portion (20). The body (10) is made of resin. The body (10) includes a pair of column portions (11) and a pair of connecting portions (12, 13). The body (10) includes a plate portion (15) on at least one of the column portions (11). The plate portion (15) is provided with ribs (16 to 18) that extend from the side of the opening (A) to the bracket outer peripheral side and protrude in the opening penetration direction. The reinforcement portion (20) includes a reinforcement portion (21). The reinforcement portion (21) forms an outer peripheral face (f1) of the bracket (1). The reinforcement portion (21) is arranged so as to overlap the ribs (16 to 18) when viewed in the opening penetration direction.Type: GrantFiled: January 28, 2020Date of Patent: January 30, 2024Assignee: Prospira CorporationInventor: Tadashi Onishi
-
Publication number: 20240011539Abstract: Provided are an anti-vibration device manufacturing method, a stopper for an anti-vibration device, and an anti-vibration device all of which prevent easy separation between the stopper and the bracket while improving the ease of fastening the stopper and the bracket together. The anti-vibration device manufacturing method is a method for obtaining the anti-vibration device. The stopper can be formed, by applying a coating agent C, which is configured to be peelable after solidification, to at least a bulging portion (12) of a positioning protrusion (10) of the stopper. The anti-vibration device can be formed, by pressing the bulging portion (12) into a positioning hole A1 formed in the bracket 5, so that the bulging portion (12) is prevented from detaching from the bracket (5), using the stopper after solidification of the coating agent C.Type: ApplicationFiled: September 7, 2021Publication date: January 11, 2024Applicant: Prospira CorporationInventor: Akimitsu HYODO
-
Publication number: 20240011537Abstract: It is provided a bracket for anti-vibration device with improved durability. A bracket (1) includes a bracket main body (2) and a reinforcement member (3). The reinforcement member (3) has an inner surface (32) buried in the main body (2). The reinforcement member (3) has a defining edge surface (31) that defines this reinforcement member (3) as a surface. At least a part of the defining edge surface (31) is an inclined surface (32a) formed by the inner surface (32) of the reinforcement member (3), which is inclined toward an outer surface (33) of this reinforcement member (3).Type: ApplicationFiled: September 7, 2021Publication date: January 11, 2024Applicant: Prospira CorporationInventors: Tadashi ONISHI, Mizuki KATAURA, Kaoru OOTANI
-
Publication number: 20230375069Abstract: An anti-vibration device (1) includes a covering member (17), arranged between an inner attachment member (11) and an outer cylinder (12), that covers, from outside in the radial direction, the area between a pair of middle elastic bodies (32) adjacent to each other in the circumferential direction, and defines a pair of liquid chambers (14a, 14b) between the inner attachment member and the covering member. An orifice passage (19) connecting each liquid chamber is formed between the covering member and the outer cylinder. A first connecting aperture (18) and a second connecting aperture (20) that separately connect each liquid chamber and the orifice passage are formed in the covering member. An injection hole (12a) formed in the outer cylinder and sealed by a sealing material (16) opens toward at least one of the first connecting aperture and the second connecting aperture.Type: ApplicationFiled: October 11, 2021Publication date: November 23, 2023Applicant: Prospira CorporationInventors: Takeshi FURUKORI, Yuzo HATTORI, Hiroshi KOJIMA
-
Publication number: 20230358293Abstract: A partition member includes a first orifice passage extending from a main liquid chamber to the side of a sub-liquid chamber, and a second orifice passage extending from the sub-liquid chamber to the side of the main liquid chamber and connected to the first orifice passage. The first orifice passage extends from the main liquid chamber to one side in a circumferential direction. The second orifice passage extends from a connection portion with the first orifice passage to the other side in the circumferential direction. In the partition member, a short passage directly connecting the connection portion between the first orifice passage and the second orifice passage and the sub-liquid chamber is formed.Type: ApplicationFiled: September 22, 2021Publication date: November 9, 2023Applicant: Prospira CorporationInventor: Hiroshi KOJIMA
-
Publication number: 20230358292Abstract: Included are a tubular bracket configured to be connected to one of a vibration generating portion and a vibration receiving portion and a first attachment member configured to be connected to the other, a tubular second attachment member inserted inside the bracket, and an elastic body connecting the first attachment member and the second attachment member. An inner circumferential surface of one end portion of the bracket including one end in an axial direction along a central axis has formed thereon a first portion against which an outer circumferential surface of the second attachment member is pressed, and a second portion that is positioned farther towards the one end in the axial direction than the first portion, has a larger inner diameter than the first portion, and abuts against or is in proximity with the outer circumferential surface of the second attachment member.Type: ApplicationFiled: September 24, 2021Publication date: November 9, 2023Applicant: Prospira CorporationInventor: Hiroshi KOJIMA
-
Publication number: 20230341084Abstract: A bracket (1) includes a bracket body (2) made of a synthetic resin and a reinforcement member (3) made of a fiber reinforced plastic. The bracket body (2) has a surrounding portion (20). The reinforcement member (3) extends in a surrounding direction. A reinforcement member arrangement portion (20a) of the surrounding portion (20) is formed of an outer circumference (211), an inner circumference (212), and a connecting portion (213). The reinforcement member arrangement portion (20a) is in the shape of a letter I in cross section in which the cross sectional width (W3) of the connecting portion (213) is narrower than the cross sectional width (W1) of the outer circumference (211) and the cross sectional width (W2) of the inner circumference (212). The reinforcement member (3) is arranged on the outer circumference (211).Type: ApplicationFiled: March 19, 2021Publication date: October 26, 2023Applicant: Prospira CorporationInventors: Mizuki KATAURA, Tadashi ONISHI, Masaaki OHASHI
-
Publication number: 20230202568Abstract: A cab mount (1A) includes an upper mount elastic body (2) and a lower mount elastic body (3) that are configured to sandwich a frame (10) of a vehicle. The upper mount elastic body (2) has recesses (4) in an inner peripheral surface (f21) of the upper mount elastic body (2). The recesses (4) extend in a circumferential direction. Each of the recesses (4) has an upper contact surface (f1) and a lower contact surface (f2) that are in contact with each other in a steady state.Type: ApplicationFiled: March 19, 2021Publication date: June 29, 2023Applicant: Prospira CorporationInventor: Shunji SATO
-
Patent number: 11654764Abstract: A vibration-damping device body (10) is provided that includes a first mounting member (11) mounted on one of a vibration-generating portion and a vibration-receiving portion via a bracket (2), a second mounting member (12) mounted on the other of the vibration-generating portion and the vibration-receiving portion, and an elastic body (13) connecting the first mounting member (11) and the second mounting member (12). The first mounting member (11) is fitted into a fitting hole (2a) formed in the bracket (2). A first guide portion (30) is formed on an outer circumferential surface of the first mounting member (11). A second guide portion (20 is formed on an inner circumferential surface of the fitting hole (2a). The first guide portion (30) is fitted into the second guide portion (2f).Type: GrantFiled: June 16, 2017Date of Patent: May 23, 2023Assignee: Prospira CorporationInventors: Yoshinori Matsumoto, Fumiaki Arie
-
Patent number: 11603902Abstract: A liquid seal bushing includes an outer member, an inner member, and an elastic body which connects the outer member and the inner member to each other. The bushing includes two liquid chambers, a connection path which connects the two liquid chambers and extends in one direction, a first communication path which allows communication between one end portion of both end portions of the connection path, the one end portion being located on a side of one liquid chamber of the two liquid chambers, and the other liquid chamber, a second communication path which allows communication between the other end portion of the both end portions of the connection path, and a linear motor provided inside the outer member including a movable element in the connection path and movable in the one direction to closes both openings of the first communication path and the second communication path.Type: GrantFiled: January 31, 2020Date of Patent: March 14, 2023Assignee: Prospira CorporationInventor: Kazutaka Otsu
-
Patent number: 11548341Abstract: A strut mount includes an inner member, an outer member, and a body rubber. A stopper rubber which protrudes outward in an axial direction is disposed on the body rubber. The outer member includes a supporting portion which covers the stopper rubber from outside thereof in the axial direction. The stopper rubber includes a pedestal protrusion portion which protrudes outward in the axial direction from the inner member and a tip protrusion portion which protrudes outward in the axial direction from the pedestal protrusion portion, contacts the supporting portion, and has an elasticity in the axial direction lower than that of the pedestal protrusion portion. The pedestal protrusion portion and the tip protrusion portion taper outward in the axial direction.Type: GrantFiled: December 4, 2019Date of Patent: January 10, 2023Assignee: Prospira CorporationInventors: Kazutaka Otsu, Musashi Hashimoto
-
Patent number: 11548340Abstract: A toe correction bushing including: an inner cylinder; a tubular damping mechanism which surrounds the inner cylinder; a retaining cylinder which surrounds the damping mechanism; an outer cylinder which surrounds the retaining cylinder; and an outer elastic body which connects the outer cylinder and the retaining cylinder. The retaining cylinder includes a bottom plate portion which extends inward in a radial direction from an end portion of the retaining cylinder on one side of an axial direction and a crimped portion which is located at an end portion on the other side of the axial direction and is crimped on the inside of the radial direction. The outer cylinder includes a facing surface which faces the one side of the axial direction and faces a part of a vehicle body. The facing surface is provided with a cushioning elastic body.Type: GrantFiled: July 19, 2019Date of Patent: January 10, 2023Assignee: Prospira CorporationInventor: Kazutaka Otsu
-
Publication number: 20220397177Abstract: A vibration-damping device includes a partition member provided with an orifice passage that allows a main liquid chamber and an auxiliary liquid chamber to communicate with each other, a plurality of first communication holes that allows the main liquid chamber and an accommodation chamber to communicate with each other, and a second communication hole that allows the auxiliary liquid chamber and the accommodation chamber to communicate with each other. A tubular member that protrudes in an axial direction toward the elastic body is disposed on a first wall surface of the partition member to which the first communication holes are open and which constitutes a portion of an inner surface of the main liquid chamber, in which the plurality of first communication holes are open to both an inner portion located inside the tubular member and an outer portion located outside the tubular member, on the first wall surface.Type: ApplicationFiled: November 5, 2020Publication date: December 15, 2022Applicant: Prospira CorporationInventors: Yuki SATAKE, Rei MIKOSHIBA, Akira UEKI
-
Publication number: 20220389986Abstract: A vibration-damping device includes a first attachment member (11), a second attachment member (12), an elastic body (13), and a partition member (17), the partition member including a membrane (31) and an orifice (20).Type: ApplicationFiled: June 18, 2020Publication date: December 8, 2022Applicant: Prospira CorporationInventor: Hiroshi KOJIMA
-
Publication number: 20220373058Abstract: The present invention includes a first attachment member (11, 111), a second attachment member (12, 112), an elastic body (13, 113), a partition member (16, 116), and a movable member (41, 141). An orifice passage (24, 124), a plurality of first communication holes (42a, 142a), and a second communication hole (42b, 142b) are formed in the partition member (41, 141). A tubular member (21, 121) is disposed on a first wall surface (16b, 116b) in the partition member (16, 116). The plurality of first communication holes (42a, 142a) are open to both an inner portion (16f, 116f) and an outer portion (16g, 116g) on the first wall surface (16b, 116b), and one of the partition member (16) and the tubular member (121) forms an elasticity adjusting unit (Z).Type: ApplicationFiled: November 9, 2020Publication date: November 24, 2022Applicant: Prospira CorporationInventors: Rei MIKOSHIBA, Yuki SATAKE, Akira UEKI
-
Patent number: 11466743Abstract: Provided are a bracket for an anti-vibration device, and a method for manufacturing the same, in which increase of weight and peeling of a reinforcing portion are suppressed. A bracket (1) has: a reinforcing portion (20) extending in a surrounding direction of the surrounding portion (10), having ends (21) in both directions of the surrounding direction, and being fixed to an outer surface of the portion (10); and ribs (30) formed on an outer circumference of the portion (10) so as to span the ends (21) of the reinforcing portion (20) in the surrounding direction of the portion (10). The portion (10) and the ribs (30) are made of synthetic resin. A method for manufacturing the bracket (1) includes a step of injecting synthetic resin serving as the portion (10) and the ribs (30) into a mold cavity where a reinforcing member serving as the portion (20) is set.Type: GrantFiled: October 25, 2018Date of Patent: October 11, 2022Assignee: Prospira CorporationInventors: Tadashi Onishi, Yukiko Abe, Kenichirou Iwasaki, Masato Kobayashi, Kei Yasui