US3927473A — Replaceable blade knife

Claim 1

Independent Claim 162 words

A knife having an elongated handle with opposed side walls and a cavity therebetween and a blade removably mounted at one end of the handle for replacement by a new blade, a tray for new blades normally positioned within said cavity and mounted for movement into a closed position within said cavity and outwardly thereof through an opening in an edge of the handle for removal of a blade, said tray having a supporting platform for a stack of blades, a rib extending upwardly from said surface transversely of the direction of said movement adapted to receive thereover the slots of a stack of slotted blades, said rib having end lug portions extending above the stack of blades with a depression between the lugs, and the corresponding handle wall having a downwardly projecting fixed rib extending into said depression in closed position of the tray transversely of said tray rib to maintain the top blade below the top of said lug portions.

Claim 2

Dependent Claim 162 words

A knife having an elongated handle with opposed side walls and a cavity therebetween and a blade removably mounted at one end of the handle for replacement by a new blade, a tray for new blades normally positioned within said cavity and mounted for movement into a closed position within said cavity and outwardly thereof through an opening in an edge of the handle for removal of a blade, said tray having a supporting platform for a stack of blades, a rib extending upwardly from said surface transversely of the direction of said movement adapted to receive thereover the slots of a stack of slotted blades, said rib having end lug portions extending above the stack of blades with a depression between the lugs, and the corresponding handle wall having a downwardly projecting fixed rib extending into said depression in closed position of the tray transversely of said tray rib to maintain the top blade below the top of said lug portions.

Claim 3

Dependent Claim 41 words

A knife in accordance with claim 1 in which the tray is elongated and pivoted at one end and said tray rib extends longitudinally thereof and said fixed rib extends transversely thereof in said depression in closed position of the tray.

Claim 4

Dependent Claim 30 words

A knife in accordance with claim 1 in which there is a detent means spaced from said pivotal end of the tray for releasably holding the tray in closed position.

Claim 5

Dependent Claim 100 words

A knife comprising a handle, a blade holder, a tray for new blades, said tray having a pivotal mounting within the handle about which it may be swung outwardly for exposure of the blades, means for mounting the blade holder in an outer end of the handle, said holder being selectively movable on said mounting means to an outer working position, or to an inner blade edge proteCtive position within the handle, and interlocking means between the holder in its inner position and the blade tray to prevent the tray from being swung outwardly from its position in the handle.

Claim 6

Dependent Claim 100 words

A knife comprising a handle, a blade holder, a tray for new blades, said tray having a pivotal mounting within the handle about which it may be swung outwardly for exposure of the blades, means for mounting the blade holder in an outer end of the handle, said holder being selectively movable on said mounting means to an outer working position, or to an inner blade edge proteCtive position within the handle, and interlocking means between the holder in its inner position and the blade tray to prevent the tray from being swung outwardly from its position in the handle.

Claim 7

Dependent Claim 30 words

A knife in accordance with claim 4 in which the mounting means for said blade holder comprises a pivot about which the blade holder is rotatable to its different positions.

Claim 8

Dependent Claim 27 words

A knife in accordance with claim 5 in which said pivot comprises a screw threaded bolt means adjustable to clamp the blade holder in its selected positions.

Claim 9

Dependent Claim 37 words

A knife in accordance with claim 6 in which the blade holder comprises a pair of opposed halves between which the blade is located and clamped in place by the clamping of the holder in the handle.

Claim 10

Dependent Claim 105 words

In a replaceable blade knife having a handle and a tray for supporting a stack of new blades, means for mounting the tray in a cavity in the handle for movement outwardly from the cavity to expose the blades, said tray having a top surface with raised rails for supporting thereon the stack of blades elevated from the tray surface, said rails including a longitudinally extending rail section and a cross rail section, the latter spaced inwardly from an end of the blade stack about which one or more blades comprising the stack may be rocked by cantilever action by finger pressure on said end.

Claim 11

Dependent Claim 105 words

In a replaceable blade knife having a handle and a tray for supporting a stack of new blades, means for mounting the tray in a cavity in the handle for movement outwardly from the cavity to expose the blades, said tray having a top surface with raised rails for supporting thereon the stack of blades elevated from the tray surface, said rails including a longitudinally extending rail section and a cross rail section, the latter spaced inwardly from an end of the blade stack about which one or more blades comprising the stack may be rocked by cantilever action by finger pressure on said end.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1978-12-22	1979-06-23	1979-12-23	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1982-12-22	1983-06-23	1983-12-23	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1986-12-22	1987-06-23	1987-12-23	$7700.00	Window Closed / Lapsed

Replaceable blade knife

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