Paper, leaf and laminate binder
OwnerIndru J. Primlaniinventor
Life of this patent
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Abstract
A versatile binder for binding leaf materials, including sheets of paper as well as carpet samples, is provided with a bellows between legs of a binding bracket for adjustment in receiving differing thicknesses of materials to be bound. The bellows is actuated with a manual air pump mounted on the binding bracket under a bladder. A torsion spring-biasing binding clamp is further provided to secure the bound materials in place once the bellows have been positioned. An alternative binding clamp is provided in one or more tapered pins on an upper bracket member matching frustum bores in blocks mounted to lower bracket members, frictionally.binding the two members together when the tapered pins are urged into the frustum bores.
Claims8
An adjustable binder comprising
- a "U"-shaped bracket comprising a long leg and a short leg separated by a back member,
- an internal binding plate,
- an expandable bellows between the long leg and the internal binding plate,
- an air pump pneumatically connected to the bellows for pumping air into and expanding the bellows such the internal binding plate is moved by the bellows toward the short leg for positioning the binding plate a selective distance from the short leg and for binding leaves such as paper sheets therebetween,
- a valve between the air pump and the bellows to pneumatically open and close the bellows for retaining air in or releasing air from the bellows.
A binder comprising
- a bracket comprising a lower leg and a back attached thereto,
- an upper bracket leg, or cover,
- one or more blocks each having a frustum bore attached to the bracket back,
- a tapered pin for each frustum bore, matched to frictionally fit into the tapered bores, and attached to the upper bracket leg, or cover, which when in inserted into the block bores frictionally bind the upper and lower bracket legs together, the tapered pins sized in length to match the height of materials to be bound, with the materials being higher than the bracket back.
Dependencies are inferred from the claim text.