Stephen M Hill

US Patent:

42924758, Sep 29, 1981

Filed:

Aug 28, 1979

Appl. No.:

6/070403

Inventors:

Stephen R. Hill - Seattle WA
Victor M. De Pinto - Bellevue WA
John D. Gillen - Woodinville WA

Assignee:

Tone Commanders Systems, Inc. - Redmond WA

International Classification:

H04M 900

US Classification:

179 99A

Abstract:

A multi-link intercom system having a large number of stations selectively connected to one of eight links by respective station controllers. When a calling station goes off-hook, its station controller connects the station to the first available link during the one of four link access periods corresponding to that link. The calling station then applies appropriate signals to the link identifying the called station. These signals are decoded by a link controller for the link which generates called station address signals during its corresponding link access period. All of the link controllers generate called station address signals on the same bus, but the signals are time multiplexed to occur during a portion of each link access period corresponding to each link. The station controller for the called station recognizes its address and connects its station to the link corresponding to the portion of the link access period in which the station address was received. Two-way communication between the calling and called station is then effected.

US Patent:

20230109381, Apr 6, 2023

Filed:

Dec 8, 2022

Appl. No.:

18/063628

Inventors:

Stephen M. Hill - Buckley WA, US

International Classification:

F16B 13/12
F16B 13/06
F16B 35/00
F16B 39/02

Abstract:

In implementations of a pressure lock retention fastener, the fastener assembly includes an insert sized for insertion into a fastener hole in a first panel. The fastener assembly has a threaded collet sized to slide in the insert and has expandable flanges that extend below the insert. The expandable flanges are sized for insertion into an aligned hole in a second panel. The fastener assembly also includes a screw installable through the insert to engage the threaded collet. The screw exerts a force that pushes the expandable flanges outward as screw rotation drives the screw into the threaded collet, and ridge locks of the expandable flanges seat up against the second panel effective to fasten the panels together. In implementations, a plate is installable between the panels with slotted holes having anti-rotation tabs that prevent a fastener assembly from spinning in the panel holes.

US Patent:

20190316621, Oct 17, 2019

Filed:

Mar 21, 2019

Appl. No.:

16/360215

Inventors:

Stephen M. Hill - Buckley WA, US

International Classification:

F16B 13/12
F16B 39/02
F16B 35/00
F16B 13/06

Abstract:

In implementations of a pressure lock retention fastener, the fastener assembly includes an insert sized for insertion into a fastener hole in a first panel. The fastener assembly has a threaded collet sized to slide in the insert and has expandable flanges that extend below the insert. The expandable flanges are sized for insertion into an aligned hole in a second panel. The fastener assembly also includes a screw installable through the insert to engage the threaded collet. The screw exerts a force that pushes the expandable flanges outward as screw rotation drives the screw into the threaded collet, and ridge locks of the expandable flanges seat up against the second panel effective to fasten the panels together. In implementations, a plate is installable between the panels with slotted holes having anti-rotation tabs that prevent a fastener assembly from spinning in the panel holes.