MR. JAMES J KELLY, COTA/L
Occupational Therapy at Easton Rd, Warrington, PA

5299884, Apr 5, 1994

Sep 10, 1991

7/757665

James A. Westhoff - Langhorne PA
James A. Kelly - Warrington PA

Poly-Tec Products, Inc. - Tullytown PA

E02D 2914

404 25

A watertight chimney assembly prevents infiltration of water in the region between a manhole cover support frame and a concrete manhole assembly. The watertight chimney, in one embodiment, is comprised of a pair of tubular telescoping sleeves each provided with a flange for mounting respectively to and between the top lip of a manhole assembly and the bottom surface of a flange on the cover support frame supported a desired distance above the top of the manhole assembly to maintain the cover frame at proper grade. An O-ring seated within an annular groove provided in one of the tubular sleeves provides a sliding watertight seal therebetween. The sleeve flanges are arranged and compressed between the cover support frame and manhole assembly and contribute to the watertight seal. One of the sleeves is reversible to increase the telescoping range between a minimum and a maximum extension. In an alternative embodiment, the internal surface of the manhole opening constitutes one of the telescoping members.

5248154, Sep 28, 1993

Oct 7, 1991

7/772574

James A. Westhoff - Langhorne PA
James A. Kelly - Warrington PA

Poly-Tec Products, Inc. - Tullytown PA

F16J 1510, F16L 1502

277212FB

A gasket for providing a watertight seal between an opening and a cast member and a conduit extending into said cast member, the gasket being an annular member having an outer circumferential portion of inverted T-shaped cross-section for embedment into the opening of the cast member and a flexible web-like portion extending inwardly from said anchoring portion and terminating in an annular enlarged beaded portion. The length of the web is greater than the distance between the outer diameter of the beaded portion and the inner diameter of the anchoring portion to form a curved configuration. The beaded portion has an inner diameter adapted to cause the beaded portion to undergo at least slight expansion when a conduit is pushed through the central opening defined by the beaded portion whereby the over-center position of the beaded portion may be reversed simply by movement of the pipe. An intermediate annular portion of the web is of increased thickness to form an anti-balloon annular section which serves to retain the shape of the center of the gasket and avoids the necessity of making the web of the gasket too thick.

5081802, Jan 21, 1992

Feb 15, 1990

7/480285

James A. Westhoff - Langhorne PA
James A. Kelly - Warrington PA
James E. Parker - Myakka City FL

Poly-Tec Products, Inc. - Tullytown PA

E02D 2914

52 20

Cast members are provided with a liner assembly to protect the cast material from corrosion. The liner assembly is formed of a plurality of curved liner sections having integral joining flanges. A resilient compressible gasket is arranged between opposing flanges and is provided with at least one flange receiving slot for receiving the flange of one of said liner sections to facilitate assembly thereof. Fastening means join the opposing flanges to compress the gasket and thereby provide a liquid-tight joint. Integral flanges are provided at the upper and lower ends of the liner sections to receive a sealant which is squeezed out of the seams formed by the mating sections when joined to protect the cast assembly from corrosion. The liner sections are formed of a material which is inert to the corrosive influences.

4890863, Jan 2, 1990

Mar 28, 1988

7/174076

James Westhoff - Langhorne PA
James A. Kelly - Warrington PA

A-Lok Products, Inc. - Tullytown PA

F16L 502, F16L 4108

285 39

A metallic clamping band of channel-shaped cross-section is arranged in a ring-shaped manner and has a discontinuity so as to define two adjacent free ends thereof. A curved channel-shaped insert has one of its ends welded to one end of said clamping band while the other of its ends is free to slidably engage the remaining end of the clamping band. The remaining end of the clamping band is provided with a plurality of openings arranged at spaced intervals along each of the sidewalls of the channel shaped member to define a plurality of pairs of openings. A locking pin is insertable into one of said pairs of openings to engage the free end of the insert portion and thereby maintain the clamping band in the expanded and locked position. The free end of the insert preferably has an extending tongue adapted to be positioned between the locking pin and the base of the clamping band when in the locked position. A pair of solid members are welded respectively to the insert and the clamping band to receive an expander for expanding the clamping band to the desired diameter.

RE34787, Nov 15, 1994

Jul 21, 1993

8/094694

James A. Westhoff - Langhorne PA
James A. Kelly - Warrington PA

Poly-Tec Products, Inc. - Tullytown PA

F16J 1510

277207A

A bidirectional gasket providing a water-tight seal between an opening in a manhole assembly and a pipe extending into said opening, comprises a T-shaped anchoring portion for embodiment in a manhole opening. A substantially A-shaped pipe engagement portion is joined to the anchoring portion by a slender connecting web facilitating bending of the gasket. The A-shaped portion has "legs" and recesses which form water pockets preventing water from entering. The durometer of the gasket material enhances the water-tight seal of the legs with increasing water pressure. The pipe engaging portion accommodates a greater outside pipe diameter compared with conventional connectors due to reduced volume, by providing voids within the connector together and a lower durometer of gasket material. The gasket has enhanced ability to accommodate diameter deflection or ovation in rigid and flexible pipe materials. The A-shaped profile allows for greater angular deflection and/or pipe misalignment compared with conventional connectors.

5217237, Jun 8, 1993

Jan 24, 1992

7/825135

James A. Westhoff - Langhorne PA
James A. Kelly - Warrington PA

Poly-Tec Products, Inc. - Tullytown PA

F16J 1510

277207A

A bidirectional gasket providing a water-tight seal between an opening in a manhole assembly and a pipe extending into said opening, comprises a T-shaped anchoring portion for embedment in a manhole opening A substantially A-shaped pipe engagement portion is joined to the anchoring portion by a slender connecting web facilitating bending of the gasket. The A-shaped portion has "legs" and recesses which form water pockets preventing water from entering. The durometer of the gasket material enhances the water-tight seal of the legs with increasing water pressure. The pipe engaging portion accommodates a greater outside pipe diameter compared with conventional connectors due to reduced volume, by providing voids within the connector together and a lower durometer of gasket material. The gasket has enhanced ability to accommodate diameter deflection or ovation in rigid and flexible pipe materials. The A-shaped profile allows for greater angular deflection and/or pipe misalignment compared with conventional connectors.

4746127, May 24, 1988

Aug 20, 1987

7/087522

James Westhoff - Langhorne PA
James A. Kelly - Warrington PA

A-Lok Products, Inc. - Tullytown PA

F16J 1552

277 1

A clamping band for clamping a resilient gasket against an opening within a wall to provide a fluid-tight seal therebetween. The clamping band is generally circular-shaped and has an elongated slot extending inwardly from one free end of the clamping band and cooperates with an elongated projection of reduced cross section as compared with the nominal cross section of the clamping band and which is provided at the opposite end of the band. The projection is inserted into the slot, the clamping band is placed against the gasket arranged within the aforesaid opening and the gasket is expanded a predetermined amount by an hydraulic expander to exert the desired clamping pressure upon the resilient gasket. One surface of the projection is provided with a series of teeth. An opening communicating with said slot receives a wedge fitted into said opening and having several teeth along one surface thereof, which teeth conform to the teeth of said projection.

5054794, Oct 8, 1991

Mar 13, 1989

7/322302

James Westhoff - Langhorne PA
James A. Kelly - Warrington PA

A-LOK Products, Inc. - Tullytown PA

F16J 1510, B23P 1900, F16L 502, F16L 2108

277 1

An expansion band having a spanning member whose free end is provided with a locking tab for cooperation with a locking surface having a plurality of selectable locking slots. A guide channel secured to the band cooperates with the band to define a guideway through which the spanning member extends thereby maintaining the spanning member and hence the free ends of the expansion band in alignment. During expansion of the expansion band the locking tab is free to snap out of each locking slot and into the next. Upon release of the expansion forces, however, the locking tab is prevented from snapping out of the locking slot in which it is presently inserted. A novel expansion unit comprised of a manual hydraulic pump operates a duck-bill type spreader which bears against associated bearing surfaces respectively provided on one end of the spanning member and one end of the guide channel to apply direct expansion forces to the expansion band. The locking tab and locking slots are shielded from the gasket expanded by the expansion band to protect the gasket from being scored and/or damaged.