Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7415800 | Columbarium with improved security A columbarium apparatus comprises a columbarium structure defining a plurality of niches. Each niche has an open end, and a horizontal ledge extends from the structure near the bottom wall of each niche. An inside door is configured to cover the open end of the nich... | 08/26/2008 |
| 7363782 | Combination and key operated padlock with indicator A padlock for luggage that can be operated by setting a combination or by inserting and turning a key is provided with an indicator that normally displays a first state when the lock being used in a normal way as a combination operated padlock, but which displays a ... | 04/29/2008 |
| 7185802 | Collection canister system for charities A collection canister system having a front panel and a rear panel. The rear panel has top and bottom edges and side edges there between and forwardly extending sides. The front panel has top and bottom edges and side edges there between and rearwardly extending sid... | 03/06/2007 |
| 7159422 | Combination and key operated padlock with indicator A padlock for luggage that can be operated by setting a combination or by inserting and turning a key is provided with an indicator that normally displays a first state when the lock being used in a normal way as a combination operated padlock, but which displays a ... | 01/09/2007 |
| 6920835 | Charity collection safe A collection safe is provided, especially for charitable donations, for installation in a wall of a building. The collection safe has a rectangular box formation and includes a first door on one side of the box for receiving donations and a second door on the opposi... | 07/26/2005 |
| 6907830 | Multipoint lock assembly An enclosure lock comprises at least one keeper 2 and latch 5. The keeper is mounted to an interior of the enclosure body 18. The latch is mounted to the interior side of the enclosure door 1. The keeper includes spaced projecting lugs | 06/21/2005 |
| 6732664 | Key and combination locking mechanism The locking mechanism described herein is for use in an enclosure, which is part of a product delivery system. The locking mechanism uses existing locks and latches, and configures them using linkages into a mechanism that is not currently available. The mechanism h... | 05/11/2004 |
| 6724304 | Security entrance system A security entrance system for controlling access from an infeed area (98) to a protected area (100) has a structure (24) defining a chamber disposed between the infeed area, the protected area and a temporary containment area (201), with... | 04/20/2004 |
| 6588655 | Non-contact food pass A non-contact food/cuff pass apparatus and system is disclosed. The apparatus generally includes a hollow body adapted to be affixed to a prison door aperture. The hollow body includes a door on one end. The other end is open to be affixed to the prison d... | 07/08/2003 |
| 6484650 | Automated security chambers for queues A security system having a series of adjacent bullet-proof transparent chambers for successive passage of persons in a queue. A door interlock system controls passage of individuals along with intermittent movement of a conveyor for inspecting hand-carrie... | 11/26/2002 |
| 6474599 | Aircraft security system An aircraft security system comprises a transparent bullet-proof security chamber interposed between the pilot area and the passenger area, and providing the only means of passage to the pilot area. The security chamber has a cockpit door to the cockpit a... | 11/05/2002 |
| 6472984 | Security entrance system A security entrance system for controlling access from an infeed area (98) to a protected area (100) has a structure (24) defining a chamber disposed between the infeed area and the protected area, with first doors (38) at the infeed end of the chamber an... | 10/29/2002 |
| 6467603 | Snack dispenser A snack dispenser consists of a series of tiers stacked to resemble a wedding cake. Each tier includes a trough divided into slots. A snack may be placed into each slot. The front of each slot is transparent. The troughs or trays are mounted on a rotatabl... | 10/22/2002 |
| 6378769 | Pass through delivery device A pass through closure and delivery device permitting material to be safely passed through a slot in a partition or prison cell door. A container having first and second openings and first and second doors associated with each opening is disclosed for mou... | 04/30/2002 |
| 6308644 | Fail-safe access control chamber security system An access control vestibule having first and second locking single doors, an access control chamber formed between the two doors, magnetic locks for each of the doors, a metal detector located between the doors to detect for a weapon, the doors are manual... | 10/30/2001 |
| 6302325 | Access opening closure device An access opening closure device is provided for enabling passage of food or medication into a confined spaced without providing direct access from within the confined space to outside of the confined space. The device includes a housing defining a recept... | 10/16/2001 |
| 5921191 | Pass through interlock system Pass through interlock systems for sanitized environments or "clean rooms" are disclosed which allow for the transfer of objects from outside the sanitized environment without introducing undesirable contaminants therein. The system comprises a frame, box... | 07/13/1999 |
| 5694867 | Fail-safe access control chamber security system A fail-safe access control chamber security system (ACCSS) including a bullet-proof access control unit (ACU) having an entrance chamber and an exit chamber. The entrance chamber includes a first interlocking door providing passage from a non-secure area ... | 12/09/1997 |
| 5325084 | Secure area ingress/egress control system The system includes a vestibule and a plurality of emergency exits interconnecting the secure area with the outside environment. The vestibule comprises a pair of security doors and the emergency exits comprise security doors having locking means and mean... | 06/28/1994 |
| 5105714 | Armored combat vehicle, especially a military tank An armored combat vehicle, especially a military tank, with at least one entry-and-exit hatchway in the top. The hatchway closes with a hatch completely covering it. At least two additional moving roof-protection hatches above the hatch that completely co... | 04/21/1992 |
| 5060583 | Floor safe The safe is an upwardly opening box-like structure. A door panel has at least one door closure cushioning and delaying apparatus connected to the door panel and to the structure. A locking shelf has at least one slotted port. A locking initiation member h... | 10/29/1991 |
| 4843761 | Arrangement in revolving door assemblies A revolving door assembly includes a pair of part-cylindrical wall portions partly surrounding the rotational path of a revolving door and partly defining a passage. Pairs of part-cylindrical wall panels are provided in association with the part-cylindric... | 07/04/1989 |
| 4807315 | Waterbed pedestal with safe A waterbed pedestal for supporting a waterbed frame and mattress on its top surface, the pedestal of the type comprising a plurality of panels assembled to form head, foot, and left and right side faces. The pedestal includes a cavity that is positioned t... | 02/28/1989 |
| 4729327 | Security box protection means A security box with a door combined with an electricity charged cover, an alarm, an electrical insulator inner cover between the box and charged cover, an electrical insulator outer cover outside of the charged cover, switch means for activating the alarm... | 03/08/1988 |
| 4686804 | Prefabricated panelized nuclear-hardened shelter A shelter 20 to enable occupants thereof to survive a near-strike nuclear detonation as well as chemical, biological and conventional weapons attacks can be assembled by four men in thirty minutes. Panels 38 are lightweight laminates of plastics and reinf... | 08/18/1987 |
| 4685402 | Fire resistive cabinet for storing easily damageable electronic data storage materials A fire resistive cabinet for storing easily damageable electronic data storage materials such as floppy discs to protect them against the deleterious effects of high temperature and high humidity. The cabinet includes an outer housing of fire resistive co... | 08/11/1987 |
| 4589709 | Locking cover for air conditioner A locking cover for preventing unauthorized access to the control panel of an air conditioner. The locking cover is adapted for use with an air conditioner having a control panel seated between a frame connected to the control panel access opening and a s... | 05/20/1986 |
| 4408546 | Hingeless safe door assembly This invention provides a hingeless safe door assembly that can be flush mounted in a recessed safe compartment built into a wall or floor. Thus, a frame and flush cover plate holds the door assembly recessed away from the wall or floor for access to lock... | 10/11/1983 |
| 4408545 | Safe, and method and apparatus for building it A "do it yourself" burglar-resistent safe is provided at extremely low cost. The present apparatus and method make it possible and practical for almost any person, even a person having a low degree of manual skill and even a low intelligence, to construct... | 10/11/1983 |
| 4327651 | Method and apparatus for protecting a floor safe from water damage A method and apparatus for protecting a floor safe from water damage including an outer shell member mounted in an annular area formed between the case or housing of the floor safe and the foundation in which the floor safe is mounted; a protective enclos... | 05/04/1982 |
| 4232798 | Automatic vending machine for delivering containers having edible product therein An automatic vending machine for delivering soft ice cream or the like to ice cream cones or other containers. A pivotally mounted arm receives a cone and then moves to a product-dispensing station. The product is dispensed into the cone until a weight-re... | 11/11/1980 |
| 4195579 | Portable safe Disclosed is a portable safe which when locked wedges itself in a drawer to resist being either opened or removed from the drawer without first being unlocked.... | 04/01/1980 |
| 4180183 | Trap door for vending machine An article vending machine, said machine having an article delivery chute, and an article delivery opening at the lower end of such shute, and a door for closing such opening, in which the improvement comprises a chute closure operable to close the chute ... | 12/25/1979 |
| 4176440 | Safe, and method and apparatus for building it A "do it yourself" burglar-resident safe is provided at extremely low cost. The present apparatus and method make it possible and practical for almost any person, even a person having a low degree of manual skill and even a low intelligence, to construct ... | 12/04/1979 |
| 4155608 | Gun cabinet A cabinet for the secure storage of a gun adapted to be mounted in the recess of a wall wherein an outer door of the said cabinet provides a disguised appearance of a decorative wall article. Directly behind the said outer door is a lockable transparent i... | 05/22/1979 |
| 4123978 | Safe The present invention pertains to a wall safe designed such that it may be conveniently built into and secured to any new or existing structure such as a building, vehicle, or the like. The wall safe comprises a top, bottom, and four side walls, one of wh... | 11/07/1978 |
| 3957173 | User access compartment for an automated teller machine A user access compartment for an automated teller machine which dispenses currency and/or receipts through an opening in the protective cabinet of the machine. The compartment is generally cylindrical in shape having an access opening therein, and the com... | 05/18/1976 |
| 3945329 | Water barrier for floor safes or the like A water barrier for floor safes comprising a removable lid having an elastomeric sealing O-ring extending around the periphery of a relatively rigid rim thereof to engage the inner surface of the case of a floor safe, the lid having a hollow central knob ... | 03/23/1976 |
