ALEXANDER F PLESS
Engineering in Pigeon Cove, MA
License number
Massachusetts 45961
Issued Date
Jul 26, 2004
Expiration Date
Jun 30, 2018
Type
Mechanical Engineer
Address
Address
Pigeon Cove, MA 01966
Personal information
See more information about ALEXANDER F PLESS at radaris.comName
Address
Phone
35 Chapel St, Gloucester, MA 01930
4 Gardenstone Way, Rockport, MA 01966
4 Gardenstone Way, Rockport, MA 01966
6 Gardenstone Way, Rockport, MA 01966
6 Richards Ave, Rockport, MA 01966
Professional information
Elastomeric Sliding Seal For Vacuum Bellows
US Patent:
6231054, May 15, 2001
Filed:
Dec 21, 1998
Appl. No.:
9/217383
Inventors:
Ernest E. Allen - Rockport MA
Robert J. Mitchell - Saugus MA
Perry J. I. Justesen - Beverly MA
Alexander F. Pless - Rockport MA
Robert J. Mitchell - Saugus MA
Perry J. I. Justesen - Beverly MA
Alexander F. Pless - Rockport MA
Assignee:
Axcelis Technologies, Inc. - Beverly MA
International Classification:
F16J 300
US Classification:
277634
Abstract:
An improved bellows assembly (18) is provided for use in, for example, an ion implanter (10). The bellows assembly comprises a first mounting portion (56) located at one end of the bellows assembly for fixedly mounting the bellows assembly to a first vacuum chamber (16); a second mounting portion (54) located at an opposite end of the bellows assembly for slidably mounting the bellows assembly to a second vacuum chamber (15); and a steel bellows (60) located between the first and second mounting portions. The bellows extends generally along a longitudinal axis (64) and is expansible and contractible along this axis. The second mounting portion permits radial slidable movement of the bellows assembly with respect to the second chamber in a first plane substantially perpendicular to this axis. The second mounting portion comprises a first sliding plate (74) having a first wear plate (78), a second sliding plate (76) having a second wear plate (80), and an elastomeric seal (82) for maintaining a vacuum condition at the slidable mating surface provided between the first and second wear plates.
Lateral Stress Relief Mechanism For Vacuum Bellows
US Patent:
6065499, May 23, 2000
Filed:
Dec 21, 1998
Appl. No.:
9/217677
Inventors:
Alexander F. Pless - Rockport MA
Gary J. Rosen - Arlington MA
Allan D. Weed - Marblehead MA
Ernest E. Allen - Rockport MA
Victor M. Benveniste - Gloucester MA
Perry J. I. Justesen - Beverly MA
Gary J. Rosen - Arlington MA
Allan D. Weed - Marblehead MA
Ernest E. Allen - Rockport MA
Victor M. Benveniste - Gloucester MA
Perry J. I. Justesen - Beverly MA
Assignee:
Eaton Corporation - Cleveland OH
International Classification:
F16L 1100, F16L 1116
US Classification:
138118
Abstract:
An improved bellows assembly (18) is provided for use in, for example, an ion implanter (10). The bellows assembly comprises a first mounting portion (56) located at one end of the bellows assembly for fixedly mounting the bellows assembly to a first vacuum chamber (16); a second mounting portion (52) located at an opposite end of the bellows assembly for slidably mounting the bellows assembly to a second vacuum chamber (15); and a steel bellows (54) located between the first and second mounting portions. The bellows extends generally along a longitudinal axis (64) and is expansible and contractible along this axis. The second mounting portion permits radial slidable movement of the bellows assembly with respect to the second chamber in a first plane substantially perpendicular to this axis. The second mounting portion comprises at least one sliding seal subassembly (80) for maintaining the vacuum, and a support ring (78) and a slide plate (82) located on opposite ends of the sliding seal subassembly. The slide plate and the sliding seal subassembly provide a slidable vacuum-tight mating surface therebetween.