Lawrence S Stern

US Patent:

46677755, May 26, 1987

Filed:

Apr 30, 1986

Appl. No.:

6/857676

Inventors:

Lawrence Stern - Morristown NJ

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

B66B 1104

US Classification:

187 17

Abstract:

A hydraulic elevator system having a tunnel member as part of the car frame, to reduce the pit depth required for a hydraulic jack. A stabilizer for the plunger of the hydraulic jack is fixed to the bottom of the tunnel member, with the stabilizer being in an inactive, retracted position while the cylinder head is within the tunnel member. The stabilizer is automatically actuated to an operative plunger support position, as the elevator car rises and the bottom of the tunnel member starts to rise higher than the cylinder head, to provide an additional lateral support point for the plunger. The lateral support function provided by the stabilizer functions at all times, in both the active and inactive positions, without any wear inducing relative motion between the stabilizing surfaces of the stabilizer, and any other element of the system, including the hydraulic jack, its plunger, or the tunnel of the car frame.

US Patent:

49916939, Feb 12, 1991

Filed:

Feb 16, 1989

Appl. No.:

7/311507

Inventors:

Lawrence Stern - Morristown NJ
Jeffrey W. Blain - Scenic Lakes Township, Sussex County NJ

Assignee:

Inventio AG - Hergiswil

International Classification:

B66B 126

US Classification:

187111

Abstract:

A method of improving the landing of a hydraulic elevator car which responds to slowdown and leveling indicia associated with each floor of a building served by the car. The method, which utilizes signals which are already generated relative to the car traveling past slowdown and leveling indicia, provides an optimum deceleration time TOPT for the car to initiate deceleration and arrive at a leveling zone of a target floor, defined by leveling indicia. The method further delays the initiation of deceleration of the car, after the car reaches slowdown indicia for the target floor, by a predetermined time delay Td. The method determines the actual time TACT for the car to travel between slowdown and leveling indicia for the target floor, and then changes Td, if necessary, in a direction which tends to optimize Td, when TACT - Td is not equal to TOPT.

US Patent:

49003119, Feb 13, 1990

Filed:

Dec 6, 1988

Appl. No.:

7/280637

Inventors:

Lawrence Stern - Morristown NJ
Thomas Stern - Staten Island NY

International Classification:

A61M 532

US Classification:

604198

Abstract:

A hypodermic syringe has a needle guard of elliptical cross section which is releasable by compressing the needle guard along its major axis, and, which can be moved between an extended and a retracted position when released. Optionally, a compression spring is provided for urging the needle guard towards an extended position.