US3763698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating object breakage test apparatus
Assignee: Toyoda Koki KK
•
Filing: 1972-05-31
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Granted: 1973-10-09
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Expires: 1992-05-31
Abstract
Abstract Rotating object breakage test apparatus for testing the strength and recording the mode of breakage of a rotating object. The object is mounted upon a spindle supported by gas bearings and is located within a dark shelter. An electrical conductor connecting an electric source with an electric vibrator is fixed upon the object so that when the object is broken by the centrifugal force applied thereto,the conductor is also cut or broken in order to stop the electric supply to the vibrator. By detecting interruption of the electric supply, the exact instant of the breakage of the rotating object is recorded,whereby the strength of the rotating object is detected by recording the rotational speed thereof, while the mode of breakage thereof is recorded upon a photograph.
Inventors
- 👤 I Suzuki
- 👤 T Imai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:43
CPC Classifications
G; G01; G01M; G01M99/00; G01M99/004; G01M13/00; G01N; G01N3/00; G01N3/08; G01N3/16; G01N3/165; G01N2203/00; G01N2203/0001; G01N2203/0005; G01N2203/003; G01N2203/0032; G01N2203/0037; G01N2203/005; G01N2203/0058; G01N2203/006; G01N2203/0062; G01N2203/0066; G01N2203/0067; G01N2203/02; G01N2203/06; G01N2203/0641; G01N2203/0647
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
123 words
Rotating object breakage test apparatus comprising: spindle means for rotatably supporting a spindle upon which a rotating object is mounted; driving means operable to rotate said spindle; vibrator means operable to change an electric signal when electric power supplied thereto is interrupted; a power source for supplying electric power to said vibrator means; an electrical conductor mounted upon said rotating object connecting said power source with said vibrator means, said electrical conductor being broken so as to interrupt electric power supply to said vibrator means when the rotating object is broken; receiving means for receiving the electrical signal from said vibrator means; and detecting means adapted to detect the interruption of the electric signal supplied to said receiving means from said vibrator means.
Claim 2
Dependent Claim
123 words
Rotating object breakage test apparatus comprising: spindle means for rotatably supporting a spindle upon which a rotating object is mounted; driving means operable to rotate said spindle; vibrator means operable to change an electric signal when electric power supplied thereto is interrupted; a power source for supplying electric power to said vibrator means; an electrical conductor mounted upon said rotating object connecting said power source with said vibrator means, said electrical conductor being broken so as to interrupt electric power supply to said vibrator means when the rotating object is broken; receiving means for receiving the electrical signal from said vibrator means; and detecting means adapted to detect the interruption of the electric signal supplied to said receiving means from said vibrator means.
Claim 3
Dependent Claim
75 words
Rotating object breakage test apparatus as set forth in claim 1, wherein said detecting means comprises: a speed detector for sensing rotational speed of said spindle; voltage detecting means responsive to said receiving means for detecting the interruption of the electric power supply to said vibrator means; and recording means responsive to said speed detector and said voltage detecting means to record the rotational speed of said spindle together with a rotating object breakage signal.
Claim 4
Dependent Claim
87 words
Rotating object test apparatus as set forth in claim 2, wherein said apparatus further comprises: a shelter for enclosing the rotating object so as to provide a dark room therefor; a camera located within said shelter and being responsive to said voltage detecting means so as to take a picture of the rotating object when it is broken; and lighting means for supplying enough light for said camera to take a picture and being responsive to said voltage detecting means to be operated simultaneously with said camera.
Claim 5
Dependent Claim
25 words
Rotating object breakage test apparatus as set forth in claim 1, wherein said spindle means is provided with a gas bearing for supporting said spindle.
Claim 6
Dependent Claim
44 words
Rotating object breakage test apparatus as set forth in claim 4, wherein said apparatus further comprises: guard means surrounding said rotating object so as to prevent the scattering of broken pieces of said rotating object, said guard means being elastically fixed to a floor.
Claim 7
Dependent Claim
85 words
Rotating object breakage test apparatus as set forth in claim 4, wherein said spindle means comprises: a sleeve mounted upon said spindle; a first flange for mounting the rotating object upon said spindle in cooperation with said sleeve; a second flange shiftably mounted between said first flange and said sleeve; and balancing means mounted between said second flange and said first flange, said balancing means being disengaged therefrom by centrifugal force which causes the shifting of said second flange when the rotating object is broken.
Claim 8
Dependent Claim
96 words
Rotating object breakage test apparatus as set forth in claim 4, wherein said spindle means comprises: a sleeve mounted upon said spindle; a first flange for mounting the rotating object upon said spindle in cooperation with said sleeve; a second flange mounted between said sleeve and said first flange; spring means interposed between said second flange and said first flange for shifting said second flange when said rotating object is broken; and balancing means disengageably mounted between said second flange and said first flange, said balancing means being disengaged therefrom when the rotatIng object is broken.
Claim 9
Dependent Claim
85 words
Rotating object test apparatus as set forth in claim 4, wherein said apparatus further comprises: a shelter for enclosing the rotating object so as to provide a dark room therefor; a camera located within said shelter for taking a picture of the rotating object when it is broken; and lighting means for supplying enough light for said camera to take a picture, said detecting means being able to provide a switching signal to energize said lighting means and to close a shutter of said camera.
Claim 10
Dependent Claim
39 words
Rotating object test apparatus as set forth in claim 4, wherein said driving means comprises: an internal combustion engine; and an intermediate shaft driven by said engine, said intermediate shaft being connected with said spindle to rotate said spindle.
Claim 11
Dependent Claim
157 words
Rotating object breakage test apparatus comprising: spindle means for rotatably supporting a spindle upon which a rotating object is mounted; driving means operable to rotate said spindle; vibrator means mounted upon said spindle so as to produce an electric signal only while electric power is supplied thereto; a power source mounted upon said spindle so as to supply electric power to said vibrator means; an electrical conductor connecting said vibrator means and said power source, said electrical conductor being mounted upon an outer surface of said rotating object and being broken so as to interrupt the electric power supply from said power source to said vibrator means when the rotating object is broken; receiving means for receiving the electric signal from said vibrator means; and detecting means adapted to detect the interruption of the electric signal supplied to said receiving means from said vibrator means and to record the exact moment when the rotating object is broken.
Claim 12
Dependent Claim
157 words
Rotating object breakage test apparatus comprising: spindle means for rotatably supporting a spindle upon which a rotating object is mounted; driving means operable to rotate said spindle; vibrator means mounted upon said spindle so as to produce an electric signal only while electric power is supplied thereto; a power source mounted upon said spindle so as to supply electric power to said vibrator means; an electrical conductor connecting said vibrator means and said power source, said electrical conductor being mounted upon an outer surface of said rotating object and being broken so as to interrupt the electric power supply from said power source to said vibrator means when the rotating object is broken; receiving means for receiving the electric signal from said vibrator means; and detecting means adapted to detect the interruption of the electric signal supplied to said receiving means from said vibrator means and to record the exact moment when the rotating object is broken.
References Cited (Backward Citations)
US1805896A
Cited
US3040564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |