Author: claimsbot

What is claimed is:

1. A connecting rod fracture machine for fracture separating a connecting rod into a cap portion and a rod portion, comprising
a pallet for placing thereon a connecting rod to be fractured,
first and second support members, arranged on a base of said pallet movably apart from each other, for supporting a large end portion and the rod portion of said connecting rod,
a half-split type mandrel, vertically provided on said first and second support members, comprising two mandrel half portions with each outer peripheral surface thereof fitted into and in contact with an inner surface of an opening of said large end portion,
a wedge, with tapered surfaces in contact with opposite edge surfaces of said mandrel half portions, for separating said mandrel half portions uniformly apart from each other,
an actuator for applying a load to said wedge, and
control means for applying an initial load to said actuator to bring each of said mandrel half portions into contact with said inner surface of the opening and thereafter applying a fracture load to instantaneously fracture said opening.
2. The connecting rod fracture machine according to claim 1, wherein said first support member comprises a pressing member for pressing both shoulder portions of the cap portion of the connecting rod against said mandrel half portions, respectively, and
said second support member comprises an engagement member for holding a small end portion of said connecting rod.
3. The connecting rod fracture machine according to claim 2, wherein the engagement member of said second support member has, on a front end portion thereof, a notch opened in the shape of a letter V.
4. The connecting rod fracture machine according to claim 1, wherein each of said mandrel half portions is allowed to contact with an inner surface of a large end bearing at three points of the outer peripheral surface of each of said mandrel half portions.
5. The connecting rod fracture machine according to claim 1, wherein said connecting rod fracture machine comprises a cylinder for moving said wedge toward said mandrel, and
said actuator comprises an accumulator for accumulating a high-pressure working fluid therein and a valve for instantaneously supplying the high-pressure working fluid from said accumulator to said cylinder.
6. A method for fracture separating a connecting rod into a cap portion and a rod portion, comprising the steps of:
placing the connecting rod to be fractured on a pallet,
holding said connecting rod by supporting a large end portion and the rod portion of said connecting rod by means of first and second support members arranged on a base of said pallet movably apart from each other, and bringing each outer peripheral surface of a half-split type mandrel mateably into contact with an inner surface of an opening of said large end portion, said half-split type mandrel being vertically provided on said first and second support members and comprising two mandrel half portions,
applying an initial load to the inner surface of said opening using a wedge with tapered surfaces in contact with opposite edge surfaces of said mandrel half portions to bring each of said mandrel half portions into contact with the inner surface of said opening, and
fracturing said opening instantaneously by applying a fracture load to the inner surface of said opening using said wedge.
7. The method for fracture separating a connecting rod according to claim 6, wherein the step of holding said connecting rod comprises the steps of pressing both shoulder portions of the cap portion of the connecting rod against said mandrel half portions, respectively, by means of said first support member, and
holding a small end portion of said connecting rod by means of said second support member.
8. The method for fracture separating a connecting rod according to claim 7, wherein the small end portion of said connecting rod is held by means of a notch opened in the shape of a letter V on the engagement member of said second support member.
9. The method for fracture separating a connecting rod according to claim 6, wherein in the step of bringing each outer peripheral surface of the half-split type mandrel mateably into contact with the inner surface of the opening of said large end portion, each of said mandrel half portions is in contact with the inner surface of the large end bearing at three points of the outer peripheral surface of each of said mandrel half portions.
10. The method for fracture separating a connecting rod according to claim 6, wherein in the step of instantaneously fracturing said opening, a high-pressure working fluid is supplied instantaneously from an accumulator for accumulating the high-pressure working fluid to a cylinder for moving said wedge toward said mandrel via a valve.

The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.

1. A deformable mirror device, comprising:
a flexible member formed so as to be deformable and having a mirror surface formed on its front surface; and
pressure generating means configured so that a direction of generation of a pressure to be applied to the flexible member is variable.
2. The deformable mirror device according to claim 1,
wherein the flexible member has a cross-sectional profile such that its thickness is largest in the outermost peripheral portion and decreases in a stepwise fashion from the center of the mirror surface toward an outer periphery.
3. The deformable mirror device according to claim 1,
wherein the pressure generating means comprises a pressure applying section to apply a pressure to a surface of the flexible member opposite to the mirror surface, the pressure generating means being configured to impart driving forces independently to a plurality of locations on the pressure applying section.
4. The deformable mirror device according to claim 3,
wherein the pressure generating means includes the pressure applying section having different coils wound at a plurality of locations, and a magnetic member provided in correspondence with each of the coils, the pressure generating means being configured to be impart driving forces independently to a plurality of locations on the pressure applying section by supplying driving electric power independently to each of the coils.
5. The deformable mirror device according to claim 3,
wherein the pressure generating means comprises a plurality of piezoelectric elements each secured to the pressure applying section, the pressure generating means being configured to impart driving forces independently to a plurality of locations on the pressure applying section by supplying driving electric power independently to each of the piezoelectric elements.
6. The deformable mirror device according to claim 5,
wherein the pressure applying section comprises a bar-shaped portion formed so as to project with respect to the surface of the flexible member opposite to the mirror surface.
7. An optical pickup apparatus comprising:
an objective lens;
a semiconductor laser;
a detector; and
a deformable mirror device,
wherein the deformable mirror device includes a flexible member formed so as to be deformable and having a mirror surface formed on its front surface, and pressure generating means configured so that a direction of generation of a pressure to be applied to the flexible member is variable.
8. A deformable mirror device, comprising:
a flexible member formed so as to be deformable and having a mirror surface formed on its front surface; and
a pressure generating section configured so that a direction of generation of a pressure to be applied to the flexible member is variable.

What is claimed is:

1. An electron gun for a multi-media monitor, the electron gun comprising:
a cathode;
a control electrode;
a screen electrode; and
a plurality of focusing electrodes to focus and accelerate an electron beam and satisfy the condition that a value of is greater than or equal to 0.222, where T1D, T1 denotes a thickness of the control electrode, and D denotes a diameter of an electron beam aperture of the control electrode.
2. The electron gun of claim 1, wherein the value of satisfies the condition that 0.222<0.316.
3. The electron gun of claim 1, wherein a minimum diameter of the electron beam aperture of the control electrode is in the range of 0.3-0.4 mm.
4. The electron gun of claim 1, wherein a cathode spot cutoff voltage applied to the cathode is in the range of 50-95V.
5. The electron gun of claim 4, wherein the cathode spot cutoff voltage applied to the cathode is in the range of 50-80V.
6. The electron gun of claim 1, wherein a zero voltage is applied to the control electrode, and a voltage of 400-1000 V is applied to the screen electrode.
7. The electron gun of claim 6, wherein a voltage of approximately 600V is applied to the screen electrode.
8. An electron gun used with a multi-media monitor, the electron gun comprising:
a cathode;
a control electrode;
a screen electrode; and
a plurality of focusing electrodes to focus and accelerate an electron beam and satisfy the condition that 0.222<0.316, where T1D, T1 denotes a thickness of the control electrode, and D denotes a diameter of an electron beam aperture of the control electrode,
wherein a zero voltage is applied to the control electrode, a voltage of approximately 600V is applied to the screen electrode, and a cathode spot cutoff voltage of 50-80V is applied to the cathode.
9. An electron gun used with a multi-media monitor, the electron gun comprising:
a cathode;
a control electrode;
a screen electrode; and
a plurality of focusing electrodes to focus and accelerate an electron beam and satisfy the condition that a value of M is greater than or equal to 0.222, where M is the quotient of dividing T1 by DS2(AC)0.5, T1 denotes a thickness of the control electrode, A denotes an area of an electron beam aperture of the control electrode, and C denotes the circumference of the electron beam aperture of the control electrode.
10. The electron gun of claim 9, wherein the value of M satisfies the condition that 0.222M<0.316.
11. The electron gun of claim 9, wherein a minimum diameter of the electron beam aperture of the control electrode is in the range of 0.3-0.4 mm.
12. The electron gun of claim 9, wherein a cathode spot cutoff voltage applied to the cathode is in the range of 50-95V.
13. The electron gun of claim 12, wherein the cathode spot cutoff voltage applied to the cathode is in the range of 50-80V.
14. The electron gun of claim 9, wherein a zero voltage is applied to the control electrode, and a voltage of 400-1000V is applied to the screen electrode.
15. The electron gun of claim 14, wherein a voltage of approximately 600V is applied to the screen electrode.
16. An electron gun used with a multi-media monitor, the electron gun comprising:
a cathode;
a control electrode;
a screen electrode; and
a plurality of focusing electrodes to focus and accelerate an electron beam and satisfy the condition that 0.222M<0.316, where M is the quotient of dividing T1 by DS2(AC)0.5, T1 denotes a thickness of the control electrode, A denotes an area of an electron beam aperture of the control electrode, and C denotes the circumference of the electron beam aperture of the control electrode,
wherein a zero voltage is applied to the control electrode, a voltage of approximately 600V is applied to the screen electrode, and a cathode spot cutoff voltage of 50-80V is applied to the cathode.
17. An electron gun used with a multi-media monitor, the electron gun comprising:
a cathode;
a control electrode;
a screen electrode; and
a plurality of focusing electrodes to focus and accelerate an electron beam and satisfy the condition that a value of k is greater than or equal to 0.11, where kT1L, T1 denotes a thickness of the control electrode, and L denotes the distance between a beam-entering surface of the control electrode and a beam-emitting surface of the screen electrode.
18. The electron gun of claim 17, wherein the value of k satisfies the condition that 0.11k<0.135.
19. The electron gun of claim 17, wherein a minimum diameter of the electron beam aperture of the control electrode is in the range of 0.3-0.4 mm.
20. The electron gun of claim 17, wherein a cathode spot cutoff voltage applied to the cathode is in the range of 50-95V.
21. The electron gun of claim 20, wherein the cathode spot cutoff voltage applied to the cathode is in the range of 50-80V.
22. The electron gun of claim 17, wherein a zero voltage is applied to the control electrode, and a voltage of 400-1000V is applied to the screen electrode.
23. The electron gun of claim 22, wherein a voltage of approximately 600V is applied to the screen electrode.
24. An electron gun used with a multi-media monitor, the electron gun comprising:
a cathode;
a control electrode;
a screen electrode; and
a plurality of focusing electrodes to focus and accelerate an electron beam and satisfy the condition that 0.11k<0.135, where kT1L, T1 denotes a thickness of the control electrode, and L denotes the distance between a beam-entering surface of the control electrode and a beam-emitting surface of the screen electrode, wherein a zero voltage is applied to the control electrode, a voltage of approximately 600V is applied to the screen electrode, and a cathode spot cutoff voltage of 50-80V is applied to the cathode.
25. A method of providing an electron gun with a cathode, a control electrode, a screen electrode, and a plurality of focusing electrodes, and used with a multi-media monitor, the method comprising:
decreasing a cathode spot cutoff voltage to within a range of 50-80V; and
varying the thickness of the control electrode and a diameter of an electron beam aperture.
26. The method of claim 25, wherein when the thickness of the control electrode in millimeters is T1, the diameter of the electron beam aperture of the control electrode in millimeters is D, and the quotient of dividing the thickness T1 by the diameter D is 3 (T1D), the thickness T1 of the control electrode and the diameter D of the electron beam aperture are determined such that is greater than or equal to 0.222 to offset the focusing characteristic degradation due the decreasing of the cathode spot cutoff voltage.

The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.

1. A steering wheel arrangement for motor vehicles, in which the risk of injury is reduced, should a driver impact against a steering wheel in the event of a crash, the steering wheel arrangement comprising
a skeleton of the steering wheel;
spokes of the steering wheel skeleton;
a compact body of deformable, energy absorbing material, in which the spokes of the steering wheel are fixed,
wherein at least one spoke has a spoke head, which is embedded in the body of energy absorbing material, is of flat construction, and two intersecting ribs are provided on each of opposite flat sides of the spoke head.
2. A steering wheel arrangement for motor vehicles, in which the risk of injury is reduced, should a driver impact against a steering wheel in the event of a crash, the steering wheel arrangement comprising:
a skeleton of the steering wheel;
spokes of the steering wheel skeleton;
a compact body of deformable, energy absorbing material, in which the spokes of the steering wheel are fixed
wherein at least one spoke has a spoke head, which is embedded in the body of energy absorbing material, is of flat construction, has at least one rib, and the spoke head is rounded at its end and the at least one rib is likewise rounded and at an end thereof has at least virtually the thickness of the spoke head.
3. The steering wheel arrangement as claimed in claim 1 or 2, wherein metallic foam or rigid plastic foam is used as energy absorbing material.
4. The steering wheel arrangement as claimed in claim 1 or 2, wherein the body and the spokes have respective thicknesses, and the thickness of the body is a multiple of the thickness of the spokes.
5. The steering wheel arrangement as claimed in claim 1 or 2, wherein the spokes each have opposite ends and a spoke head at one of the ends, and
a hub in which the compact body of deformable, energy absorbing material is disposed with the spoke heads embedded therein.
6. The steering wheel arrangement as claimed in claim 1 or 2, wherein the steering wheel spokes have greater resistance to deformation than the body of energy absorbing material.