US3855872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary drive apparatus
Assignee: Individual
•
Filing: 1973-08-29
•
Granted: 1974-12-24
•
Expires: 1993-08-29
Abstract
Abstract A rotary drive apparatus comprises a housing including an intermediate transmission portion, an input shaft portion connected to one end of the intermediate transmission portion and extending outwardly therefrom in a first direction and an output shaft portion connected to the opposite end of the intermediate transmission portion and extending outwardly therefrom in a second opposite direction. The intermediate transmission portion is provided with an exhaust port for the exhaust of air which is directed under pressure to an air motor which is carried eccentrically in a rotatable mounting in the input shaft portion of the housing. The air motor includes a drive pulley on its drive shaft which is connected through a belt to a driven pulley carried on a output shaft which is rotatably supported in the output shaft portion of the housing and which includes an outer drive end which is connected to a drive element, for example, a grind stone. Compressed air which is circulated through the drive motor is discharged through the exhaust port of the intermediate transmission portion of the housing. The tension on the drive belt extending between the input pulley on the air motor drive shaft and the output pulley carried on the output shaft may be adjusted by rotating the mounting for the air motor so as to vary the spacing between the input and the output shafts and thereby to adjust the tension on the belt. After this tension is adjusted the mounting for the air motor is clamped into position.
Inventors
- 👤 M Kakimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:40
CPC Classifications
F; F16; F16H; F16H7/00; F16H7/08; F16H7/10; F16H7/14; B; B23; B23Q; B23Q5/00; B23Q5/02; B23Q5/04; B23Q5/06; B24; B24B; B24B47/00; B24B47/10; B24B47/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
241 words
A rotary drive apparatus comprising a housing including an intermediate transmission portion, an input shaft portion connected to one end of said intermediate transmission portion and extending outwardly therefrom in a first direction, an output shaft portion connected to the opposite end of said intermediate transmission portion and extending outwardly therefrom in a second direction opposite to the first direction, an air motor exhaust port located in said housing adjacent said output shaft portion, an air motor having a rotatable drive shaft with a driven end projecting into said intermediate transmission portion of said housing and having a drive pulley affixed thereto, support means rotatably supporting said air motor in said input shaft portion with said drive shaft being eccentrically located in respect to said support means and being shiftable upon rotation of said support means, an output shaft rotatably supported in said output shaft portion and having a driven end projecting into said intermediate transmission portion of said housing and having an output pulley affixed thereto, a drive belt engaged over said input and output pulleys for driving said output shaft by said air motor, said air motor having an air discharge directed into said intermediate transmission portion of said housing for flow along said housing and exhaust at the opposite end through said exhaust port, said support means being rotatable to change the spacing between said output and input shafts in order to adjust the tension of said belt.
Claim 2
Dependent Claim
241 words
A rotary drive apparatus comprising a housing including an intermediate transmission portion, an input shaft portion connected to one end of said intermediate transmission portion and extending outwardly therefrom in a first direction, an output shaft portion connected to the opposite end of said intermediate transmission portion and extending outwardly therefrom in a second direction opposite to the first direction, an air motor exhaust port located in said housing adjacent said output shaft portion, an air motor having a rotatable drive shaft with a driven end projecting into said intermediate transmission portion of said housing and having a drive pulley affixed thereto, support means rotatably supporting said air motor in said input shaft portion with said drive shaft being eccentrically located in respect to said support means and being shiftable upon rotation of said support means, an output shaft rotatably supported in said output shaft portion and having a driven end projecting into said intermediate transmission portion of said housing and having an output pulley affixed thereto, a drive belt engaged over said input and output pulleys for driving said output shaft by said air motor, said air motor having an air discharge directed into said intermediate transmission portion of said housing for flow along said housing and exhaust at the opposite end through said exhaust port, said support means being rotatable to change the spacing between said output and input shafts in order to adjust the tension of said belt.
Claim 3
Dependent Claim
28 words
A rotary drive, according to claim 1, including means for clamping said support means in an adjusted position in respect to said input shaft portion of said housing.
Claim 4
Dependent Claim
42 words
A rotary drive, according to claim 1, wherein said air motor includes a tubular housing, said support means comprising a cylinder holding said housing eccentrically in respect to said cylinder, said cylinder being rotatable in said input shaft portion of said housing.
Claim 5
Dependent Claim
32 words
A rotary drive apparatus, according to claim 1, including a removable cover closing said intermediate transmission portion of said housing which is removable for access to said belt and said driving pulleys.
Claim 6
Dependent Claim
49 words
A rotary drive apparatus, according to claim 1, including a grinding wheel assembly extending into said output portion of said shaft, said grinding assembly comprising an outer support cylinder rotatably supporting said output shaft and means for clamping said support cylinder in said output shaft portion of said housing.
Claim 7
Dependent Claim
58 words
A rotary drive apparatus, according to claim 1, wherein support means includes a cylinder having an eccentric cylindrical bore therethrough, an air motor housing engaged in said eccentric cylindrical bore, and a rotor having radially extending blades rotatable in said housing, said air motor housing having a plurality of flow ducts defined between it and said cylindrical member.
Claim 8
Dependent Claim
50 words
A rotary drive, according to claim 1, wherein said support means includes an end wall located at the interior of said input portion of said housing having an opening therethrough defining a discharge for the compressed air driving said air motor leading into said intermediate transmission portion of said housing.
Claim 9
Dependent Claim
37 words
A rotary drive, according to claim 7, wherein said intermediate transmission portion of said housing includes a sidewall having an opening therethrough extending over a major portion of the length thereof, and a cover closing said opening.
Claim 10
Dependent Claim
36 words
A rotary drive, according to claim 1, including a projecting mounting member on said intermediate transmission portion of said housing defining a projecting plate which is engageable by a vice to position the device for operation.
Claim 11
Dependent Claim
83 words
A rotary drive, according to claim 1, wherein said support means for said motor includes a plate adjacent each end of saId motor, said motor having a housing abutting against said plates at its respective ends and having peripheral openings and being spaced from the interior of said support means, said support means defining a flow path around said housing, said plates having openings communicating with said flow path for the flow of the air into said intermediate transmission portion of said housing.
References Cited (Backward Citations)
US3626772A
Cited
US3733919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |