- Email: [email protected]
4363783 Apparatus for specimen treatment
New Patents
286
instant; generating means for generating a composite signal from such a representative signal and from a reference signal derived from the laser pulse frequency; and a digital computer for processing such a composite signal to provide reconstruction means in the form of a digital hologram for reconstructing a representation of the object. The invention further extends to a corresponding method.
an end to end relationship, one end of said cell being connected to said passage, the other end of each of said chamber and said cell being connected to a common portion of said tank to permit liquid to be circulated by said pump. 4363217 VIBRATION DAMPING APPARATUS Guy S Venuti
4363783 APPARATUS FOR SPECIMEN TREATMENT
I
i
'
• ~x
Hellmuth Sitte assigned to C Reichert Optische Werke AG
Apparatus for fixation, dessication, and embedding of biologic specimens for microscopic, especially electron microscopic studies having compartment for treatment specimens held in liquid permeable specimen holders, a supply of treatment liquid connected to the compartment, to introduce liquid from the supply, and remove liquid from the compartment, a chamber (14c) in the compartment for holding a quantity of fluid, a passage connected to the chamber, pump located in the chamber for moving fluid through the passage, at least one tubular cell for supporting a plurality of specimen holders is
A cryogenic vacuum pump has an expander module suspended from the vacuum chamber of an electron microscope by a metal bellows which dampens the vibrations transmitted to the electron microscope from the expander module. A weight mounted on the expander module and disposed around the bellows counters the lifting force of the atmospheric pressure acting on the expander module and protects the bellows. The expander module is maintained in a centered position by vibration damping isolators disposed symmetrically around the expander module and which are attached to a support extending down from the vacuum housing. In one embodiment the isolators are bar magnets which repel magnetic ring attached to the expander module. In another embodiment the isolators are ladders in which the rungs are wire canes tensioned between a side members attached respectively to the expander module and to the support. The compressor of the cryogenic vacuum pump is a separate
286
instant; generating means for generating a composite signal from such a representative signal and from a reference signal derived from the laser pulse frequency; and a digital computer for processing such a composite signal to provide reconstruction means in the form of a digital hologram for reconstructing a representation of the object. The invention further extends to a corresponding method.
an end to end relationship, one end of said cell being connected to said passage, the other end of each of said chamber and said cell being connected to a common portion of said tank to permit liquid to be circulated by said pump. 4363217 VIBRATION DAMPING APPARATUS Guy S Venuti
4363783 APPARATUS FOR SPECIMEN TREATMENT
I
i
'
• ~x
Hellmuth Sitte assigned to C Reichert Optische Werke AG
Apparatus for fixation, dessication, and embedding of biologic specimens for microscopic, especially electron microscopic studies having compartment for treatment specimens held in liquid permeable specimen holders, a supply of treatment liquid connected to the compartment, to introduce liquid from the supply, and remove liquid from the compartment, a chamber (14c) in the compartment for holding a quantity of fluid, a passage connected to the chamber, pump located in the chamber for moving fluid through the passage, at least one tubular cell for supporting a plurality of specimen holders is
A cryogenic vacuum pump has an expander module suspended from the vacuum chamber of an electron microscope by a metal bellows which dampens the vibrations transmitted to the electron microscope from the expander module. A weight mounted on the expander module and disposed around the bellows counters the lifting force of the atmospheric pressure acting on the expander module and protects the bellows. The expander module is maintained in a centered position by vibration damping isolators disposed symmetrically around the expander module and which are attached to a support extending down from the vacuum housing. In one embodiment the isolators are bar magnets which repel magnetic ring attached to the expander module. In another embodiment the isolators are ladders in which the rungs are wire canes tensioned between a side members attached respectively to the expander module and to the support. The compressor of the cryogenic vacuum pump is a separate