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US 5,704,901 AGranted
Equine speculum
OwnerJack A. Meisterinventor
Life of this patent
Estimating the term…
Abstract
An equine speculum has an extension (17b) to the upper jaw piece (17a) to which the speculum-controlling handle (28a) is joined by a pivot (30), there being a slot (44) in the handle to permit relative motion of a pivot (29) that joins the handle to the lower jaw piece (18). An extension (46) below the lower jaw piece provides additional teeth (47) to permit latching the speculum in various open positions.
Claims11
An equine speculum comprising:
- a generally U-shaped upper jaw piece having an upper leg extending along each side of the horse's mouth from a generally crescent-shaped upper tooth plate disposed in the forward, proximal end thereof to receive the upper teeth and lip of the horse, having a nose strap slot midway along each of said legs to receive a nose strap, and having a head strap slot at the extreme rear, distal end of each of said legs for receiving a head strap;
- a generally U-shaped lower jaw piece having a lower leg extending along each side of the horse's mouth from a generally crescent-shaped tooth plate disposed in the forward, proximal end thereof for receiving the lower teeth and lip of the horse, the extreme rearward end of each of said lower legs being joined by a corresponding one of a related pair of pivot joints to the extreme rearward end of the corresponding one of said upper legs;
- each of said upper legs having an extension which extends downwardly and forwardly from the corresponding one of said pivot joints, in the general vicinity of the corresponding one of said lower legs, and having a forward free end substantially midway along the corresponding one of said lower jaw pieces;
- and
- a handle having two handle legs, each extending generally along a corresponding one of said lower legs and connected thereto by a corresponding one of a related pair of first handle pivot joints, each of said handle legs connected to a free end of a corresponding one of said extensions by a corresponding one of a related pair of second handle pivot joints, one of said related pairs of handle pivot joints being slotted so as to permit a varying distance between the pivots of the other of said related pairs of handle pivot joints as said handle is rotated to move said lower jaw piece from a substantially closed position to a substantially open position.
2 more elements
An equine speculum comprising:
- a generally U-shaped upper jaw piece having an upper leg extending along each side of the horse's mouth from a generally crescent-shaped upper tooth plate disposed in the forward, proximal end thereof to receive the upper teeth and lip of the horse, having a nose strap slot midway along each of said legs to receive a nose strap, and having a head strap slot at the extreme rear, distal end of each of said legs for receiving a head strap;
- a generally U-shaped lower jaw piece having a lower leg extending along each side of the horse's mouth from a generally crescent-shaped tooth plate disposed in the forward, proximal end thereof for receiving the lower teeth and lip of the horse, the extreme rearward end of each of said lower legs being joined by a corresponding one of a related pair of pivot joints to the extreme rearward end of the corresponding one of said upper legs;
- said upper legs each having an extension which extends downwardly and forwardly from the corresponding one of said pivot joints, in the general vicinity of the corresponding one of said lower jaw pieces, and having a forward free end substantially midway along the corresponding one of said lower jaw pieces;
- a handle having two handle legs, each extending generally along a corresponding one of said lower legs and connected thereto by a corresponding one of a related pair of first handle pivot joints, each of said handle legs connected to a free end of a corresponding one of said extensions by a corresponding one of a related pair of second handle pivot joints, one of said related pairs of handle pivot joints being slotted so as to permit a varying distance between the pivots of the other of said related pairs of handle pivot joints as said handle is rotated to move said lower jaw piece from a substantially closed position to a substantially open position;
- a tooth extension extending downwardly from the centermost proximal, forward portion of said lower jaw piece with a plurality of forward-facing teeth disposed thereon and on said lower jaw piece;
- and
- a pawl on said handle for engaging respective ones of said teeth when said speculum is in corresponding open positions, said teeth extending along a length of said lower jaw piece and said extension to permit said pawl to engage one of said teeth when said speculum is between approximately halfway open and substantially fully open.
4 more elements
Dependencies are inferred from the claim text.