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Kramer, Joel M.

Publications and source records attributed to Kramer, Joel M..

Rotary latch

A rotary latch is disclosed, including a hollow, cylindrical outer member and a concentrically arranged inner rotor. The rotor is rotatable within the outer cylindrical member. The outer cylindrical member includes a pair of aligned openings as a cylinder first end facing a latch pin. The rotor includes a pair of aligned slots at a rotor first end facing the latch pin. Slot extensions are provided in the rotor, the slot extensions extending generally perpendicularly to the slots and generally parallel to the rotor first end. In a first position, the outer cylindrical member openings and the rotor slots are aligned to allow receipt of the latch pin. In a second position, the openings and the slot extensions are aligned thereby engaging the latch pin within a closed area defined by the rotor slot extensions and the outer cylinder openings.

Kramer, Joel M.↗

Pressure Seal For Frequently Opened Hatch

Pressure-assisted seal for frequently opened hatch includes two sealing rings retained positively so not pulled out during opening. Seal makes contact with hatch well before hatch starts to squeeze rings extending distance over which seal becomes engaged. Improvements include more-secure mounting, redundancy, and better initial sealing action. Also minimizes loss of gas during closure by deflecting inward and closing gap. This action helps differential pressure to force hatch closed.

Kennedy, Steven E.↗