摘要:
In a screw drive, in particular a ball screw drive, a double nut, formed of a pair of individual nuts, is tightened on a threaded spindle and the individual nuts are secured together against relative rotation by a locking member. The locking member is secured within a radially extending recess formed in and bridging the individual nuts. The locking member can be inserted with a certain amount of play into the recess or borehole and then secured within the recess by a cement or similar material so that it cannot be displaced. Various types of locking members can be used, such as locking bolts or threaded bolts. When the locking member is connected into the recess or ball it prevents any rotation of the individual nuts relative to one another.
摘要:
A bearing assembly operatively interposed between a shaft and a housing having said shaft axially movably mounted therein for torque transmission therebetween includes a ball bushing inserted into a bushing receiving bore in the housing and guided through ball rings in ball races, with at least one of said ball rings being a load-transmitting ring including a load-transmitting ball ring section which rests radially inwardly against the shaft and radially outwardly against an external support surface defined by the ball bushing. The load bearing ball ring section of the at least one ball ring engages a race groove in the shaft on the shaft side of the ball ring and it engages a race groove of a bearing plate mounted in the ball bushing on the ball bushing side of the ball ring in a manner to transmit torque therebetween. The bearing plate may be pressed radially inwardly by means of a clamping device which presses against the ball bushing through contact surfaces which are oriented to intersect resultant planes generated by torque transmitting forces transmitted through the torque transmitting ball ring which are parallel to the bushing axis at an angle to insure a self-locking action.
摘要:
The invention is a method for the purification of mono-PEGylated erythropoietin using two cation exchange chromatography steps wherein the same type of cation exchange material is used in both cation exchange chromatography steps and a method for producing a mono-PEGylated erythropoietin in substantially homogeneous form.
摘要:
A process is disclosed for the production of an antifusogenic peptide by producing a fusion peptide of a length of about 14 to 70 amino acids in a prokaryotic host cell, comprising the steps, under such conditions that inclusion bodies of said fusion peptide are formed, of: (a) expressing in said host cell a nucleic acid encoding said fusion peptide consisting of a first peptide which is an antifusogenic peptide of a length of about 10 to 50 amino acids and a second peptide of a length of about 4 to 30 amino acids, said first peptide being N-terminally linked to said second peptide; (b) cultivating said host cell to produce said inclusion bodies; and (c) recovering said antifusogenic peptide from said inclusion bodies, wherein said recovered antifusogenic peptide consists of said fusion peptide or a peptide comprising the antifusogenic peptide of about 10 to 50 amino acids and which is a fragment cleaved from said fusion peptide. Inclusion bodies of the peptides are disclosed. Also disclosed is a nucleic acid encoding the fusion peptide consisting of a first peptide which is an antifusogenic peptide selected from the group of SEQ ID NO: 7, SEQ ID NO: 8, SEQ ID NO: 9, SEQ ID NO: 10, and said sequences further consisting of glycine at the C terminal end, N-terminally linked to the second peptide.
摘要翻译:公开了通过在原核宿主细胞中产生约14至70个氨基酸长度的融合肽来生产抗融合肽的方法,包括以下步骤:在形成所述融合肽的包涵体的条件下, (a)在所述宿主细胞中表达编码所述融合肽的核酸,所述融合肽由长度为约10至50个氨基酸的抗融合肽的第一肽和长度为约4-30个氨基酸的第二个肽组成 所述第一肽与所述第二肽N-末端连接; (b)培养所述宿主细胞以产生所述包涵体; 和(c)从所述包涵体中回收所述抗融合肽,其中所述回收的抗融合肽由所述融合肽或包含约10至50个氨基酸的抗融合肽的肽组成,并且是从所述融合肽切割的片段。 公开了肽的包涵体。 还公开了编码由第一肽组成的融合肽的核酸,第一肽是选自SEQ ID NO:7,SEQ ID NO:8,SEQ ID NO:9,SEQ ID NO:10的抗融合肽, 所述序列进一步由C末端的甘氨酸组成,N-末端与第二肽连接。
摘要:
The invention is a method for the purification of mono-PEGylated erythropoietin using two cation exchange chromatography steps wherein the same type of cation exchange material is used in both cation exchange chromatography steps and a method for producing a mono-PEGylated erythropoietin in substantially homogeneous form.
摘要:
A process is provided for producing an antifusogenic peptide by producing a fusion peptide of from about 14 amino acids up to 70 amino acids in a prokaryotic host cell under conditions in which inclusion bodies are formed. The antifusogenic peptide recovered from the inclusion bodies is a fragment cleaved from the fusion peptide which comprises an antifusogenic peptide.
摘要:
The invention is a method for the purification of mono-PEGylated erythropoietin using two cation exchange chromatography steps wherein the same type of cation exchange material is used in both cation exchange chromatography steps and a method for producing a mono-PEGylated erythropoietin in substantially homogeneous form.