Daniel W Mcdermott

US Patent:

50905465, Feb 25, 1992

Filed:

Sep 22, 1989

Appl. No.:

7/411218

Inventors:

Daniel R. McDermott - Clinton MD

Assignee:

Trihard, S.A.

International Classification:

B65G 1116

US Classification:

193 34

Abstract:

A gravity conveyor chute section (10) includes a door/ledge assembly (20), having a ledge (30) which is hingedly attached to a sidewall (12) of the chute section below a side opening (16) into the chute section and first and second side supports (56, 58), which extend from side edges (32, 34) of the ledge to the chute sidewall beyond side edges (36, 38) of a front panel (18). The ledge can be moved to a laterally-extending position for forming a ledge below the side opening and to a closed position for closing the side opening. When the ledge is moved to the closed position, the side supports move along side panels (22, 24) of the sidewall beyond the first and second side edges of the front panel. A door (68) is hingedly mounted on the ledge for being selectively rotated to the laterally-extending position with the ledge and to a closed position with or without the ledge.

US Patent:

48831573, Nov 28, 1989

Filed:

Dec 7, 1988

Appl. No.:

7/280914

Inventors:

Daniel R. McDermott - Clinton MD

Assignee:

Trihard, S.A. - Luxembourg

International Classification:

E04F 1712

US Classification:

193 34

Abstract:

A gravity conveyor chute section (10) includes a door/ledge assembly (20), having a ledge (30) which is hingedly attached to a sidewall (12) of the chute section below a side opening (16) into the chute section and first and second side supports (56, 58), which extend from side edges (32, 34) of the ledge to the chute sidewall beyond side edges (36, 38) of a front panel (18). The ledge can be moved to a laterally-extending position for forming a ledge below the side opening and to a closed position for closing the side opening. When the ledge is moved to the closed position, the side supports move along side panels (22, 24) of the sidewall beyond the first and second side edges of the front panel. A door (68) is hingedly mounted on the ledge for being selectively rotated to the laterally-extending position with the ledge and to a closed position with or without the ledge.

US Patent:

46404031, Feb 3, 1987

Filed:

Feb 13, 1985

Appl. No.:

6/701256

Inventors:

Daniel R. McDermott - Clinton MD

International Classification:

E04F 1712

US Classification:

193 34

Abstract:

A rectangularly-shaped debris-conveyor chute section (10) which can be nested with other sections to form a debris chute has a side opening (30) for receiving items to be conveyed by the chute. The side opening (30) has a rotatable door/ledge assembly (32) mounted thereat which can be rotated, as a unit, into the chute opening to bring a ledge thereof flat against a sidewall (22) of the chute section covering the opening (30) or out of the chute opening to bring the ledge perpendicular to the sidewall (22) of the chute and the door over the opening in the sidewall. A baffle (62) is placed on the inside of the sidewall immediately above the side opening to protect the door/ledge assembly (32) from items falling through the chute. Hoisting eyelets (64) are located on the interior of each chute section so that they can be reached through the opening. The conveyor chute sections are mounted inside a building by means of screw jacks (72) attached to the rotatable door/ledge assemblies.

US Patent:

51275074, Jul 7, 1992

Filed:

Oct 31, 1990

Appl. No.:

7/607633

Inventors:

Daniel R. McDermott - Clinton MD

Assignee:

Trihard, S.A.

International Classification:

B65G 1100

US Classification:

193 2R

Abstract:

An offset assembly (20) for a gravity-conveyor chute (10) includes offset upstream and downstream tubes (18 and 22) which are hingedly attached one to the other, with an upstream end opening (66) of the offset downstream tube being significantly larger than outer dimensions of a downstream end (44) of the offset upstream tube. The offset upstream and downstream tubes are rectangular in cross section with each including hinge mounts which extend laterally, outwardly, from outside surfaces of panels thereof. The downstream end of the offset upstream tube terminates in a plane which forms an angle with an axis of elongation of the offset upstream tube. The offset upstream tube has a side opening with a ledge and a door thereat.

US Patent:

60194065, Feb 1, 2000

Filed:

Apr 30, 1998

Appl. No.:

9/012643

Inventors:

Daniel R. McDermott - Clinton MD
Harold D. McDermott - Waldorf MD
Lillian B. Reamy - Waldorf MD

Assignee:

McDermott, Rosanna C. - Waldorf MD

International Classification:

B66C 128

US Classification:

294 8151

Abstract:

A power gripper for a lifting machine including a switching device coupled to a motor mounted on a frame of the power gripper by a flexible electric cord for operating a gripping element of the power gripper. The switching device includes a separate attaching device for attaching it to an item to be lifted, such as an electromagnetic. The reel mounted on the frame automatically reels in the flexible electric cord. The frame forms a positioning gauge.