EP0009460A1 - Piston in a piston-type nursing device (nursing bottle) - Google Patents

Piston in a piston-type nursing device (nursing bottle) Download PDF

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Publication number
EP0009460A1
EP0009460A1 EP79710092A EP79710092A EP0009460A1 EP 0009460 A1 EP0009460 A1 EP 0009460A1 EP 79710092 A EP79710092 A EP 79710092A EP 79710092 A EP79710092 A EP 79710092A EP 0009460 A1 EP0009460 A1 EP 0009460A1
Authority
EP
European Patent Office
Prior art keywords
piston
annular
base
sealer
extending
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP79710092A
Other languages
German (de)
French (fr)
Inventor
Hiroshi Itoh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP12984778U external-priority patent/JPS568673Y2/ja
Priority claimed from JP12984678U external-priority patent/JPS568672Y2/ja
Application filed by Individual filed Critical Individual
Publication of EP0009460A1 publication Critical patent/EP0009460A1/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J9/00—Feeding-bottles in general

Definitions

  • This invention relates to a piston in a "piston-type" nursing or feeding device comprising a cylindrical receptacle having an opening at both ends, a rubber sucking mouthpiece secured to one end thereof, and a piston inserted slidably in the receptacle.
  • a known conventional piston in a piston-type nursing bottle is of a structure consisting of a short cylindrical hard plastic body having one closed end, an annular groove formed on the peripheral surface of said body, and a rubber seal ring fitted in the annular groove.
  • this conventional piston has the defect that when the piston slides to its limit with the sucking of milk within the nursing device and further sucking of milk fails, a considerable amount of milk remains in the nursing device, especially at the mouthpiece portion.
  • a piston in a piston-type nursing device comprising a short cylindrical body of a hard or semi-hard material, an annular support portion projectingly provided concentrically on one end surface of said body, and a flexible elastic rubber sealer mounted detachably on said support portion, said sealer having an annular base mounted detachably on said support portion, a head cap portion extending from the inner circumferential edge of said base and concaved toward one end surface of said body, and an annular seal portion extending from the peripheral edge of said base.
  • the piston of this invention When the piston of this invention is used in a piston-type nursing device and slides to its limit near the mouthpiece with the sucking of milk in the nursing device through the mouthpiece, further sucking from the mouthpiece causes the head cap portion of the piston to bulge elastically toward the sucking mouthpiece, and the bulging portion comes deep into the -mouthpiece, thus enabling the milk to be sucked out with little remaining.
  • the piston has the advantage that because of the concave part of the head cap portion, milk can be filled in a larger amount corresponding to the concave part.
  • a body 1 is made of a hard or semihard synthetic resin such as polycarbonate or polypropylene, and a sealer 2 is made of a flexible elastic rubber such as a silicone rubber.
  • the body 1 consists of a short cylindrical wall 3 and an end plate 4 provided at one end thereof, and on the end plate 4 is projectingly provided an annular support portion 5 having a smaller diameter than the body 1 concentrically with the body 1.
  • An annular engaging portion for engagement with the sealer 2 is formed on the end of said support portion 5.
  • the engaging portion is composed of an L-shaped annular engaging member 6 and an annular engaging member 7 projecting nearly parallel to the axial direction.'
  • the sealer 2 has an annular base 10 with a substantially C-shaped cross section having annular engaging grooves 8 and 9 for detachably fitting the engaging members 6 and 7 therein.
  • a head cap portion 11 integral with the base 10 and concaved toward the end plate 4 of the body 1 extends from the inner circumferential edge of the base 10, and an annular seal portion 12 integral with the base 10 for providing a seal between the piston and a nursing device extends from the peripheral edge of the base.
  • the seal portion for example, is formed in a circular cross section, and its peripheral edge extends in the peripheral direction somewhat beyond the annular wall 3 of the body 1.
  • a knob 13 is provided on the undersurface of the center of the head cap portion 11, and is positioned within a hole 14 formed at the center of the body end 4.
  • the piston is inserted into the cylindrical nursing device 15 a part of which is shown in Figure 1, and milk is filled into it. Since the head cap portion 11 is concaved toward the body end plate 4, the milk can be filled in a larger amount corresponding to the concavity.
  • the peripheral surface of the wall 3 of the body 1 slidably makes contact with the inner circumferential surface of the receptacle 15 to maintain the entire piston in a right posture, and the peripheral surface of the seal portion 12 is urged elastically against the inner circumferential surface of the receptacle 15 to form a seal between the piston and the inner circumferential surface of the receptacle 15.
  • the piston moves toward a rubber sucking mouthpiece 16 with sucking of milk therefrom, and reaches the end of the receptacle 15, i.e., its limit position beyond which it can no longer move, the head cap portion 11 of the piston elastically bulges toward the sucking mouthpiece 16 as shown by a two-dot chain line by the sucking force from the mouthpiece 16.
  • the piston comes into the mouthpiece 16 at the head cap portion, thereby enabling the milk remaining in the receptacle 15 and the mouthpiece 16 to be sucked out with little remaining.
  • the bulging head cap portion 11 which has entered the sucking mouthpiece 16 by suction from the mouthpiece 16 is urged against the inside surface of the mouthpiece.
  • a cruiciform cut 17 at the end of the mouthpiece 16 is closed to render the pressure of the space between the mouthpiece 16 and the bulging head cap portion 11 negative, whereby the head cap portion 11 remains adhering to the inside surface of the mouthpiece 16.
  • the reference numerals 21, 23, 24, 25, 26, 27, 28, 29, 32, 33 and 34 represent substantially the same portions as represented by the corresponding reference numerals in Figure 1.
  • An annular small projection 40 of a semicircular cross section is provided on the peripheral surface of the seal portion 32.

Abstract

This invention relates to a piston (1) in a «piston-type» nursing device comprising a cylindrical receptacle (15), a rubber mouthpiece (16) secured to one end thereof, and a piston (1) slidably Inserted in the receptacle (15), The piston (1) consists of a short cylindrical body (3) and a flexible elastic rubber sealer (2) mounted detachably on said body (3), said sealer (2) having a concaved head cap portion (11) extending from the inner circumferential edge of an annular base (10) and an annular seal portion (12) extending from the peripheral edge of said base (10).

Description

  • This invention relates to a piston in a "piston-type" nursing or feeding device comprising a cylindrical receptacle having an opening at both ends, a rubber sucking mouthpiece secured to one end thereof, and a piston inserted slidably in the receptacle.
  • A known conventional piston in a piston-type nursing bottle is of a structure consisting of a short cylindrical hard plastic body having one closed end, an annular groove formed on the peripheral surface of said body, and a rubber seal ring fitted in the annular groove. However, this conventional piston has the defect that when the piston slides to its limit with the sucking of milk within the nursing device and further sucking of milk fails, a considerable amount of milk remains in the nursing device, especially at the mouthpiece portion.
  • It is an object of this invention to improve the conventional piston in a piston-type nursing device.
  • According to this invention, there is provided a piston in a piston-type nursing device, said piston comprising a short cylindrical body of a hard or semi-hard material, an annular support portion projectingly provided concentrically on one end surface of said body, and a flexible elastic rubber sealer mounted detachably on said support portion, said sealer having an annular base mounted detachably on said support portion, a head cap portion extending from the inner circumferential edge of said base and concaved toward one end surface of said body, and an annular seal portion extending from the peripheral edge of said base.
  • When the piston of this invention is used in a piston-type nursing device and slides to its limit near the mouthpiece with the sucking of milk in the nursing device through the mouthpiece, further sucking from the mouthpiece causes the head cap portion of the piston to bulge elastically toward the sucking mouthpiece, and the bulging portion comes deep into the -mouthpiece, thus enabling the milk to be sucked out with little remaining. When milk is to be filled in the nursing device,'the piston has the advantage that because of the concave part of the head cap portion, milk can be filled in a larger amount corresponding to the concave part.
  • Other objects and advantages of the present invention will become apparent from the following description taken in conjunction with the accompanying drawings.
  • Preferred embodiments of the present invention are described below with reference to the drawings.
    • Figure 1 is a vertical sectional view of a part of a nursing device having the piston of this invention inserted therein; and
    • Figure 2 is a vertical sectional view of another embodiment of the piston of this invention.
  • In the piston of this invention, a body 1 is made of a hard or semihard synthetic resin such as polycarbonate or polypropylene, and a sealer 2 is made of a flexible elastic rubber such as a silicone rubber.
  • The body 1 consists of a short cylindrical wall 3 and an end plate 4 provided at one end thereof, and on the end plate 4 is projectingly provided an annular support portion 5 having a smaller diameter than the body 1 concentrically with the body 1. An annular engaging portion for engagement with the sealer 2 is formed on the end of said support portion 5. Preferably, as shown in the drawing, the engaging portion is composed of an L-shaped annular engaging member 6 and an annular engaging member 7 projecting nearly parallel to the axial direction.'
  • The sealer 2 has an annular base 10 with a substantially C-shaped cross section having annular engaging grooves 8 and 9 for detachably fitting the engaging members 6 and 7 therein. A head cap portion 11 integral with the base 10 and concaved toward the end plate 4 of the body 1 extends from the inner circumferential edge of the base 10, and an annular seal portion 12 integral with the base 10 for providing a seal between the piston and a nursing device extends from the peripheral edge of the base.
  • The seal portion, for example, is formed in a circular cross section, and its peripheral edge extends in the peripheral direction somewhat beyond the annular wall 3 of the body 1. A knob 13 is provided on the undersurface of the center of the head cap portion 11, and is positioned within a hole 14 formed at the center of the body end 4.
  • In operation, the piston is inserted into the cylindrical nursing device 15 a part of which is shown in Figure 1, and milk is filled into it. Since the head cap portion 11 is concaved toward the body end plate 4, the milk can be filled in a larger amount corresponding to the concavity. The peripheral surface of the wall 3 of the body 1 slidably makes contact with the inner circumferential surface of the receptacle 15 to maintain the entire piston in a right posture, and the peripheral surface of the seal portion 12 is urged elastically against the inner circumferential surface of the receptacle 15 to form a seal between the piston and the inner circumferential surface of the receptacle 15.
  • When the piston moves toward a rubber sucking mouthpiece 16 with sucking of milk therefrom, and reaches the end of the receptacle 15, i.e., its limit position beyond which it can no longer move, the head cap portion 11 of the piston elastically bulges toward the sucking mouthpiece 16 as shown by a two-dot chain line by the sucking force from the mouthpiece 16. Thus, the piston comes into the mouthpiece 16 at the head cap portion, thereby enabling the milk remaining in the receptacle 15 and the mouthpiece 16 to be sucked out with little remaining.
  • The bulging head cap portion 11 which has entered the sucking mouthpiece 16 by suction from the mouthpiece 16 is urged against the inside surface of the mouthpiece. When sucking of milk from the mouthpiece 16 is stopped in this state, a cruiciform cut 17 at the end of the mouthpiece 16 is closed to render the pressure of the space between the mouthpiece 16 and the bulging head cap portion 11 negative, whereby the head cap portion 11 remains adhering to the inside surface of the mouthpiece 16. Thus, when the cap 18 is disengaged from its threaded engagement with the receptacle 15 and the mouthpiece 16 together with the cap 18 is separated from the receptacle 15, the head cap portion 11 adhering closely to the mouthpiece 16 is pulled, and thereby, the piston is simultaneously pulled out of the receptacle 15.
  • In the other embodiment shown in Figure 2, that portion of the head cap 31 in the sealer 22 which is near the annular base 30, i.e. the part of the head cap portion 11 which is bended when the head cap portion 31 is transformed from a concave shape to a bulging state, is formed in the shape of bellows39. The reference numerals 21, 23, 24, 25, 26, 27, 28, 29, 32, 33 and 34 represent substantially the same portions as represented by the corresponding reference numerals in Figure 1. An annular small projection 40 of a semicircular cross section is provided on the peripheral surface of the seal portion 32.

Claims (4)

1. Piston in a piston-type nursing device,said piston comprising a short cylindrical body of a hard or semihard material and a seal ring, characterized by an annular support portion (5) projectingly provided on one end surface of said body (1) and a flexible elastic rubber sealer (2) mounted detachably on said support portion (5), said sealer (2) having an annular base (10) mounted detachably on said support -portion (5) , a head cap portion (11) extending from the inner circumferential edge of said base (10) and being concaved toward one end surface of said body (1), and an annular seal portion (12) extending from the peripheral edge of said base (10).
2. Piston as claimed in Claim 1 characterized by , that said annular support portion (5) has at its end two annular engaging members (6,7) extending in a substantially peripheral direction and a direction substantially parallel to the axial direction respectively, and said annular base (10) of said sealer (2) has annular engaging grooves (8,9) for detachable fitting of said two annular engaging members (6,7).
3. Piston as claimed in Claim 1, characterized by, that the part of said head cap portion(11)which is near said annular base (10) is formed in the shape of bellows (39).
4. Piston as claimed in Claim 3, characterized by, that said annular support portion (25) has at its end two annular engaging members (26,27) extending in a substantially peripheral direction and a direction substantially parallel to the axial direction respectively, and said annular base (30) of said sealer (22) has annular engaging grooves (28,29) for detachable fitting of said two annular engaging members (26,27).
EP79710092A 1978-09-20 1979-09-18 Piston in a piston-type nursing device (nursing bottle) Withdrawn EP0009460A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP129847/78 1978-09-20
JP12984778U JPS568673Y2 (en) 1978-09-20 1978-09-20
JP129846/78 1978-09-20
JP12984678U JPS568672Y2 (en) 1978-09-20 1978-09-20

Publications (1)

Publication Number Publication Date
EP0009460A1 true EP0009460A1 (en) 1980-04-02

Family

ID=26465120

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79710092A Withdrawn EP0009460A1 (en) 1978-09-20 1979-09-18 Piston in a piston-type nursing device (nursing bottle)

Country Status (2)

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EP (1) EP0009460A1 (en)
BR (1) BR7905905A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989003204A1 (en) 1987-10-09 1989-04-20 Mam Babyartikel Gesellschaft M.B.H. Feeding-bottle
WO1991012791A1 (en) * 1990-02-22 1991-09-05 Mam Babyartikel Gesellschaft M.B.H. Feeding bottle
US5301825A (en) * 1992-07-28 1994-04-12 Luciano Di Scala Air removal device for use with a nursing bottle
GB2278061A (en) * 1993-05-19 1994-11-23 Kok Keong Ng Feeding bottle
US5799808A (en) * 1997-03-12 1998-09-01 Oh; Kisuk Nursing bottle
US6042850A (en) * 1995-08-21 2000-03-28 Ida; Frank Nursing bottle utilizing air pressure to expel air from disposable liners and methods using same for feeding an infant
US6138848A (en) * 1999-03-11 2000-10-31 Fermo; Philip J. Baby bottle
US6365202B1 (en) 1995-08-21 2002-04-02 Frank Ida Pneumatic squeezable nursing bottle and process of using
US6732872B1 (en) * 2002-09-13 2004-05-11 James H. Gregro Baby nurser with plunger device
KR100717077B1 (en) * 2002-04-24 2007-05-14 주식회사 수목베이비월드 Magic nurser
WO2015013362A3 (en) * 2013-07-25 2015-04-09 Ridley Robert J Bottle feeding system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE88665C (en) *
US3093256A (en) * 1960-01-26 1963-06-11 Jr Clifford R Woodbury Baby food feeder
US3134494A (en) * 1962-08-20 1964-05-26 Paul N Quinn Infant feeding device
GB1048208A (en) * 1965-10-20 1966-11-16 Francisco Maya Duerme Baby's feeding bottle
US3321112A (en) * 1965-10-18 1967-05-23 Ara Inc Rolling cylindrical diaphragm means
CH439585A (en) * 1966-10-26 1967-07-15 Dietziker Albert Nursing bottle
GB1493664A (en) * 1974-09-16 1977-11-30 Nystroem A Nursing bottle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE88665C (en) *
US3093256A (en) * 1960-01-26 1963-06-11 Jr Clifford R Woodbury Baby food feeder
US3134494A (en) * 1962-08-20 1964-05-26 Paul N Quinn Infant feeding device
US3321112A (en) * 1965-10-18 1967-05-23 Ara Inc Rolling cylindrical diaphragm means
GB1048208A (en) * 1965-10-20 1966-11-16 Francisco Maya Duerme Baby's feeding bottle
CH439585A (en) * 1966-10-26 1967-07-15 Dietziker Albert Nursing bottle
GB1493664A (en) * 1974-09-16 1977-11-30 Nystroem A Nursing bottle

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989003204A1 (en) 1987-10-09 1989-04-20 Mam Babyartikel Gesellschaft M.B.H. Feeding-bottle
US5145077A (en) * 1987-10-09 1992-09-08 Mam Babyartikel Gesellschaft M.B.M. Feeding bottle including a nipple adapter ring for supporting the nipple
WO1991012791A1 (en) * 1990-02-22 1991-09-05 Mam Babyartikel Gesellschaft M.B.H. Feeding bottle
US5339971A (en) * 1990-02-22 1994-08-23 Mam Babyartikel Gesellschaft M.B.H. Feeding bottle
US5301825A (en) * 1992-07-28 1994-04-12 Luciano Di Scala Air removal device for use with a nursing bottle
GB2278061A (en) * 1993-05-19 1994-11-23 Kok Keong Ng Feeding bottle
US6365202B1 (en) 1995-08-21 2002-04-02 Frank Ida Pneumatic squeezable nursing bottle and process of using
US6042850A (en) * 1995-08-21 2000-03-28 Ida; Frank Nursing bottle utilizing air pressure to expel air from disposable liners and methods using same for feeding an infant
US5799808A (en) * 1997-03-12 1998-09-01 Oh; Kisuk Nursing bottle
US6138848A (en) * 1999-03-11 2000-10-31 Fermo; Philip J. Baby bottle
KR100717077B1 (en) * 2002-04-24 2007-05-14 주식회사 수목베이비월드 Magic nurser
US6732872B1 (en) * 2002-09-13 2004-05-11 James H. Gregro Baby nurser with plunger device
WO2015013362A3 (en) * 2013-07-25 2015-04-09 Ridley Robert J Bottle feeding system
US9539180B2 (en) 2013-07-25 2017-01-10 Robert J. Ridley Bottle feeding system

Also Published As

Publication number Publication date
BR7905905A (en) 1980-07-29

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