US 4,905,964 AGranted

Swivelable connector for tubular conduits

AssigneesFujipura Seiko Co., Ltd., Daicel-Huls Ltd.

InventorKotaro Shiozaki

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Abstract

A swivelable connector for use with tubular conduits, comprising a first tubular connector member, a second tubular connector member insertable in the first member, an annular seal arranged between the members, and a resilient retainer carried in the first tubular connector member to retain the second tubular connector member in the first member. The second tubular connector member has an annular groove in which pawls of the retainer are engaged, and the first tubular connector member has apertures in which the outer portions of the pawls can be inserted to allow a resilient movement thereof and to hold the connection member in position.

Claims20

Dependent claims

A swivelable connector for use with tubular conduits, comprising:

a first tubular connector member having a first end portion adapted to be connected to a tubular conduit and a second end portion with means for forming a plurality of apertures therein, said means for forming said apertures including a cylindrical wall at an outer end of said second end portion;
a second tubular connector member having a first end portion inserted in said second end portion of said first tubular connector member, a second end portion adapted to be connected to a further tubular conduit, and means for forming an annular groove on an outer surface thereof at said first end portion;
annular sealing means arranged between said first tubular connector member and said second tubular connector member on a side inward from said annular groove;
retaining means carried in said cylindrical wall of said first tubular connector member for resiliently engaging in said annular groove of said second tubular connector member for retaining said second tubular connector member in said first tubular connector member, said retaining means being at least partly insertable in said apertures to allow said retaining means to be resiliently deformed when in contact with the outer surfaces of said second tubular connector member within said first tubular connector member during an insertion of said second tubular connector member into said first tubular connector member;
a check valve provided in said first tubular connector member on the inside relative to said second tubular connector member, said check valve comprising a movable valve element in said first tubular connector member, a spring urging said valve element toward said second tubular connector member, an annular valve seat in said first tubular connector member for receiving said valve element, said annular valve seat being arranged relative to said second tubular connector member such that said valve element is received by said second tubular connector member at a position at which it is disengaged from said annular valve seat to allow a flow of fluid when said second tubular connector member is inserted in said first tubular connector member and said valve element is received by said annular valve seat to prevent a flow of fluid when said second tubular connector member is separated from said first tubular connector member;
said valve element having a large diameter portion and a small diameter portion connected by a step, said large diameter portion being engageable with said annular valve seat, said small diameter portion extending beyond said annular valve seat and engageable with said second tubular connector member;
said annular valve seat being a separate member from and fits in said first tubular connector member and carries an annular seal for a sealing between said first tubular connector member and said annular valve seat, and an annular seal engageable with said valve element and said annular valve seat;
and
an annular seal arranged between said annular valve seat and said second tubular connector member for said annular sealing means arranged between said first tubular connector member and said second tubular connector member.

6 more elements

A swivelable connector for use with tubular conduits, comprising:

a first tubular connector member having a first end portion adapted to be connected to a tubular conduit and a second end portion with means for forming a plurality of apertures therein, said means for forming said apertures including a cylindrical wall at an outer end of said second end portion;
a second tubular connector member having a first end portion inserted into said second end portion of said first tubular connector member, a second end portion adapted to be connected to a further tubular conduit, and means for forming an annular groove on an outer surface thereof at said first end portion;
annular sealing means arranged between said first tubular connector member and said second tubular connector member on a side inward from said annular groove;
retaining means carried in said cylindrical wall of said first tubular connector for resiliently engaging with said annular groove of said second tubular connector member for retaining said second tubular connector member in said first tubular connector member, said retaining means being at least partly insertable into said apertures to allow said retaining means to be resiliently deformed when in contact with said outer surfaces of said second tubular connector member within said first tubular connector member during an insertion of said second tubular connector member into said first tubular connector member;
said retaining means comprising a cylindrical base portion adapted to fit in said cylindrical wall of said first tubular connector member and a plurality of pawls extending from said cylindrical base portion for resiliently engaging in said annular groove of said second tubular connector member, each of said pawls including a radially extending portion insertable in each of said apertures;
and
said cylindrical base portion of said retaining means including a radially outward flange, said flange and said radially extending portion of each of said pawls constituting an annular attachment groove on an outer surface of said cylindrical base portion engageable with said cylindrical wall of said first tubular connector member to secure said retaining means to said first tubular connector member.

4 more elements

Dependencies are inferred from the claim text.

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Abstract

A swivelable connector for use with tubular conduits, comprising:

a first tubular connector member having a first end portion adapted to be connected to a tubular conduit and a second end portion with means for forming a plurality of apertures therein, said means for forming said apertures including a cylindrical wall at an outer end of said second end portion;
a second tubular connector member having a first end portion inserted in said second end portion of said first tubular connector member, a second end portion adapted to be connected to a further tubular conduit, and means for forming an annular groove on an outer surface thereof at said first end portion;
annular sealing means arranged between said first tubular connector member and said second tubular connector member on a side inward from said annular groove;
retaining means carried in said cylindrical wall of said first tubular connector member for resiliently engaging in said annular groove of said second tubular connector member for retaining said second tubular connector member in said first tubular connector member, said retaining means being at least partly insertable in said apertures to allow said retaining means to be resiliently deformed when in contact with the outer surfaces of said second tubular connector member within said first tubular connector member during an insertion of said second tubular connector member into said first tubular connector member;
a check valve provided in said first tubular connector member on the inside relative to said second tubular connector member, said check valve comprising a movable valve element in said first tubular connector member, a spring urging said valve element toward said second tubular connector member, an annular valve seat in said first tubular connector member for receiving said valve element, said annular valve seat being arranged relative to said second tubular connector member such that said valve element is received by said second tubular connector member at a position at which it is disengaged from said annular valve seat to allow a flow of fluid when said second tubular connector member is inserted in said first tubular connector member and said valve element is received by said annular valve seat to prevent a flow of fluid when said second tubular connector member is separated from said first tubular connector member;
said valve element having a large diameter portion and a small diameter portion connected by a step, said large diameter portion being engageable with said annular valve seat, said small diameter portion extending beyond said annular valve seat and engageable with said second tubular connector member;
said annular valve seat being a separate member from and fits in said first tubular connector member and carries an annular seal for a sealing between said first tubular connector member and said annular valve seat, and an annular seal engageable with said valve element and said annular valve seat;
and
an annular seal arranged between said annular valve seat and said second tubular connector member for said annular sealing means arranged between said first tubular connector member and said second tubular connector member.

6 more elements