Theodore M Weber

US Patent:

50806360, Jan 14, 1992

Filed:

Jan 22, 1991

Appl. No.:

7/644954

Inventors:

Theodore Weber - Nyack NY

International Classification:

F16H 374

US Classification:

475 14

Abstract:

A cylindrical member driven by a planetary gear arrangement traverses an epitrochoid path to periodically enter a radial slot in an arm or disc rotating the arm of disc through 180. degree. By selecting the parameters appropriately the cylindrical member is caused to enter and leave the radial slot along a tangential path such that no first or second derivative discontinuities are present in the motion of the arm or disc. Several embodiments are disclosed for achieving either one or two incremental rotations of an output shaft for a single revolution of an input shaft.

US Patent:

52212378, Jun 22, 1993

Filed:

Aug 27, 1992

Appl. No.:

7/936610

Inventors:

Theodore Weber - Nyack NY

International Classification:

F16H 374

US Classification:

475 14

Abstract:

A cylindrical member driven by a planetary gear arrangement traverses an epitrochoid path to periodically enter a radial slot in an arm or disc rotating the arm or disc through 180. degree. By selecting the parameters appropriately the cylindrical member is caused to enter and leave the radial slot along a tangential path such that no first or second derivative discontinuities are present in the motion of the arm or disc. Several embodiments are disclosed for achieving either one or two incremental rotations of an output shaft for a single revolution of an input shaft with various speed reducing gear trains.

US Patent:

42219701, Sep 9, 1980

Filed:

Jun 18, 1979

Appl. No.:

6/049242

Inventors:

Anthony Ciavattoni - Staten Island NY
John J. Flynn - Monmouth-Hazlet NJ
Theodore Weber - Elmsford NY

Assignee:

Pennwalt Corporation - Philadelphia PA

International Classification:

G03B 4116

US Classification:

250439P

Abstract:

Film drive mechanism for use with a panoramic X-ray machine which provides continuous and discontinuous radiographic images of dental arch areas of a shifting patient. The mechanism utilizes a linkage structure which carries a pair of shiftable cam followers which are separably engageable with cam members having working surfaces configured to advance or retard the speed of rotation of the linkage structure in accordance with mode of radiographing selected, i. e. , continuous or discontinuous. A film drive shaft rotates in accordance with an output shaft connected to an output member of the cam-controlled rotating linkage structure which film drive shaft controls speed of rotation of a drum which has the X-ray film wrapped therearound.