Paul M Swenson

US Patent:

57721130, Jun 30, 1998

Filed:

Sep 20, 1996

Appl. No.:

8/717287

Inventors:

Joseph Gerstmann - Framingham MA
Paul F. Swenson - Cleveland OH

Assignee:

Advanced Mechanical Technology, Inc. - Watertown MA

International Classification:

F24D 300

US Classification:

237 8R

Abstract:

An engine-driven heat pump system is disclosed in which the waste heat from the engine is used to only heat the water contained in a water heater. Space heating may be then provided by circulating the water through an air-handling unit. In order to simplify the operation, the engine's coolant is circulated through a tube surrounding the heater's storage tank. Any risk of contamination to the potable water supply is removed by venting the region surrounding the coolant-to-water heat exchanger. This is achieved by assuring that a surrounding insulation layer does not form a seal over the heat exchanger and by using a non-setting thermally conductive paste between the tube and tank.

US Patent:

45012539, Feb 26, 1985

Filed:

Dec 13, 1982

Appl. No.:

6/449483

Inventors:

Joseph Gerstmann - Framingham MA
William M. Hauck - Glenshaw PA
Robert Raymond - Watertown MA
Paul F. Swenson - Shaker Heights OH

Assignee:

Consolidated Natural Gas Service Company, Inc. - Cleveland OH

International Classification:

F02B 4300

US Classification:

123527

Abstract:

A gaseous fuel system for a vehicle including an on-board compressor for recharging an associated pressure storage tank. The compressor and tank are mounted on the vehicle as a structural unit whereby the tank shields the compressor and high pressure gas flow circuits therebetween and provides a heat exchanger surface for the compressor. A regulator in series with a supply line of low pressure gas prevents gas flow when the compressor does not operate to maintain a vacuum in an intervening dispensing line. An O. sub. 2 sensor disconnects the compressor motor when the percentage of O. sub. 2 exceeds a predetermined safe limit. A bypass circuit allows the tank to be filled from a high pressure supply without operation of the compressor.

US Patent:

20190255748, Aug 22, 2019

Filed:

Feb 21, 2019

Appl. No.:

16/281891

Inventors:

- Georgetown, CA
Paul M. SWENSON - Concord MA, US

International Classification:

B29C 45/16
B32B 1/02
B29C 45/28
B29C 45/23
B32B 27/08
B32B 27/30
B32B 27/32
B32B 27/36
B65D 85/804
B65D 35/08
B32B 3/02
B29C 45/76
B32B 3/26
B32B 27/34

Abstract:

Methods and systems for co-extruding multiple polymeric material flow streams into a mold cavity to produce a molded plastic article having an injection-formed aperture in gate region of the article are disclosed herein. A method includes providing a valve pin having a distal portion with a first diameter and a mid-portion with a second diameter smaller than the first diameter and providing a mold defining a cavity corresponding to a shape of a resulting molded plastic article. The mold has a recess aligned with a gate region of the mold, extending into the mold and configured to receive the distal portion of the valve pin when the distal portion of the valve pin extends beyond the gate region. The method includes advancing the distal portion of the valve pin into the recess until the mid-portion of the valve pin at least partially extends into the gate region, thereby establishing a flow path for a combined polymeric stream into the cavity at the gate region for forming a molded plastic article having at least one layer of a first polymeric material and at least one layer of a second polymeric material. The method also includes withdrawing the mid-portion of the valve pin from the gate region, thereby forming an injection-molded aperture in the resulting molded plastic article at the gate region.

US Patent:

20170182688, Jun 29, 2017

Filed:

Mar 13, 2017

Appl. No.:

15/457254

Inventors:

- Cincinnati OH, US
Paul M. SWENSON - Concord MA, US

International Classification:

B29C 45/16
B29C 65/02
B32B 27/08
B29C 45/00

Abstract:

A co-injected molded multi-layer article has inner and outer layers, an interior layer contained within the inner and outer layers and a surface portion to which a closure or other component may be heat-sealed. The article is molded by co-injecting the inner, outer and interior layer materials into a mold cavity of a mold. The interior layer material is caused to flow along a steam line offset from the zero velocity gradient of the combined material flow and biased toward a material flow for forming an outer wall of the multi-layer article. The resultant molded multi-layer article contains an interior layer located in a heat sealable region that avoids a breach or failure during a heat seal operation to seal an opening of the molded article.

US Patent:

20170120492, May 4, 2017

Filed:

Nov 14, 2016

Appl. No.:

15/351089

Inventors:

- Cincinnati OH, US
Paul M. Swenson - Concord MA, US

International Classification:

B29C 45/16
B29C 45/22
B32B 1/02
B32B 27/32
B32B 7/02
B32B 27/08
B32B 27/30
B29C 45/26
B32B 3/04

Abstract:

A mold for molding an injection molded article comprises a mold cavity with a non-symmetrical portion. At least one flow leader in the non-symmetrical portion of the cavity produces a symmetrical flow boundary in a multilayer flow downstream of the non-symmetrical portion of the mold cavity. The at least one flow leader may be a variable thickness flow leader or may alternatively be a plurality of flow leaders having a flow path length that differs from the flow path length of an adjacent flow leader by no more than about 15%. The multilayer flow comprising an inner layer, an outer layer, and an interior layer. Co-injection molding apparatus and methods that may use the foregoing mold are disclosed. Similarly, co-injection molded articles and containers that may result from the foregoing mold, apparatus, and methods are disclosed.

US Patent:

20160250789, Sep 1, 2016

Filed:

Dec 28, 2015

Appl. No.:

14/980142

Inventors:

- Rowley MA, US
Paul M. Swenson - Concord MA, US

International Classification:

B29C 45/22
B29C 45/77
B29C 45/26
B29C 45/16

Abstract:

A molded multi-layer article has an interior layer contained within inner and outer layers. The article is molded by co-injecting the inner, outer, and interior layer materials into a mold defining a cavity. The interior layer material is caused to flow along a steam line offset from the zero velocity gradient of the combined material flow in a manner so that the interior layer material flow stream does not flow along or cross the zero velocity gradient yet has a greater flow velocity than the average flow velocity of the combined flow front. These methods and apparatus can mold four or more multilayer articles at once, each having an interior layer extending throughout 95% or more of the sealable portion of the article. The interior layer of a resultant article can extend throughout 99% or more of the sealable portion of the article.